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ARS Home » Northeast Area » Wyndmoor, Pennsylvania » Eastern Regional Research Center » Microbial and Chemical Food Safety » People & Locations » Steven Lehotay
Steven Lehotay
Microbial and Chemical Food Safety
RESEARCH CHEMIST

Phone: (215) 233-6433
Fax: (215) 233-6642

(Employee information on this page comes from the REE Directory. Please contact your front office staff to update the REE Directory.)

Projects
Technology Development, Evaluation and Validation for the Detection and Characterization of Chemical Contaminants in Foods
In-House Appropriated (D)
  Accession Number: 439576
Leading the Way to the Future of GC-MS in Food Safety Analysis
Reimbursable Cooperative Agreement (R)
  Accession Number: 440768

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Comparison of different fast gas chromatography - mass spectrometry techniques (Cold EI, MS/MS, and HRMS) for the analysis of pyrethroid insecticide residues in food Reprint Icon - (Peer Reviewed Journal)
Michlig, N., Amirav, A., Neumark, B., Lehotay, S.J. 2024. Comparison of different fast gas chromatography - mass spectrometry techniques (Cold EI, MS/MS, and HRMS) for the analysis of pyrethroid insecticide residues in food. Analytical Methods. 16,5599–5618. https://doi.org/10.1039/d4ay00858h.
Streamline food safety analysis through automation - (Other)
Lehotay, S.J. 2024. Streamline food safety analysis through automation. SelectScience. https://selectscience.net/article/streamline-food-safety-analysis-through-automation.
Comparison of filter membranes in the analysis of 183 veterinary and other drugs by liquid chromatography-tandem mass spectrometry Reprint Icon - (Peer Reviewed Journal)
Michlig, N., Lehotay, S.J., Lightfield, A.R. 2024. Comparison of filter membranes in the analysis of 183 veterinary and other drugs by liquid chromatography-tandem mass spectrometry. Journal of Separation Science. 47:2300696. https://doi.org/10.1002/jssc.202300696.
Synthesis and spectroscopic characterization of 13C4-labelled 4-cyano-2-oxobutyraldehyde semicarbazone: A metabolite of nitrofurazone Reprint Icon - (Peer Reviewed Journal)
Singh, A., Smith, D.J., Strahan, G.D., Lehotay, S.J. 2023. Synthesis and spectroscopic characterization of 13C4-labelled 4-cyano-2-oxobutyraldehyde semicarbazone: A metabolite of nitrofurazone. Journal of Labelled Compounds and Radiopharmaceuticals. 67:18-24. https://doi.org/10.1002/jlcr.4077.
Food safety analysis 2.0 Reprint Icon - (Other)
Lehotay, S.J. 2024. Food safety analysis 2.0. Analytical and Bioanalytical Chemistry. 416:60-610. https://doi.org/10.1007/s00216-023-05036-4.
Stability study of selected veterinary drug residues spiked into extracts from different food commodities Reprint Icon - (Peer Reviewed Journal)
Lehotay, S.J., Le Floch, M., Lightfield, A.R., Couëdor, P., Hurtaud-Pessel, D., Michlig, N., Verdon, E. 2023. Stability study of selected veterinary drug residues spiked into extracts from different food commodities. Food Additives & Contaminants. Part A: Chemistry, Analysis, Control, Exposure & Risk Assessment. 40:1198-1217. https://doi.org/10.1080/19440049.2023.2240444.
Production and certification of BOTS-1: Bovine muscle-certified reference material for incurred veterinary drug residues Reprint Icon - (Peer Reviewed Journal)
McRae, G., Leek, D., Meija, J., Shurmer, B., Lehotay, S.J., Polzer, J., Melanson, J.E., Mester, Z. 2023. Production and certification of BOTS-1: Bovine muscle-certified reference material for incurred veterinary drug residues. Analytical and Bioanalytical Chemistry. 416:759-771. https://doi.org/10.1007/s00216-023-04794-5.
Arbuscular mycorrhizal inoculation increases yield and nutritional quality of yellow and purple fleshed potatoes (Solanum tuberosum) Reprint Icon - (Peer Reviewed Journal)
Carrara, J.E., Reddivar, L., Lehotay, S.J., Zanati, G., Heller, W. 2023. Arbuscular mycorrhizal inoculation increases yield and nutritional quality of yellow and purple fleshed potatoes (Solanum tuberosum). American Journal of Potato Research. 100:210-220. https://doi.org/10.1007/s12230-023-09910-w.
Linking soil health to human health: Arbuscular mycorrhizae play a key role in plant uptake of the antioxidant ergothioneine from soils Reprint Icon - (Peer Reviewed Journal)
Carrara, J.E., Lehotay, S.J., Lightfield, A.R., Sun, D., Richie Jr., J.P., Smith, A.H., Heller, W. 2023. Linking soil health to human health: Arbuscular mycorrhizae play a key role in plant uptake of the antioxidant ergothioneine from soils. Plants, People, Planet. 5:449-458. https://doi.org/10.1002/ppp3.10365.
Evaluation of a septumless mini-cartridge for automated solid-phase extraction cleanup in GC-MS(/MS) analysis of >250 pesticides and environmental contaminants in fatty and nonfatty foods Reprint Icon - (Peer Reviewed Journal)
Michlig, N., Lehotay, S.J. 2022. Evaluation of a septumless mini-cartridge for automated solid-phase extraction cleanup in gas chromatographic analysis of >250 pesticides and environmental contaminants in fatty and nonfatty foods. Journal of Chromatography A. 1685:463596. https://doi.org/10.1016/j.chroma.2022.463596.
Analysis of pesticides, veterinary drugs, and environmental contaminants in goat and lamb by the QuEChERSER mega-method Reprint Icon - (Peer Reviewed Journal)
Ninga, E., Lehotay, S.J., Sapozhnikova, Y.V., Lightfield, A.R., Strahan, G.D., Monteiro, S.H. 2022. Analysis of pesticides, veterinary drugs, and environmental contaminants in goat and lamb by the QuEChERSER mega-method. Analytical Methods. 14:2761-2770. https://doi.org/10.1039/D2AY00713D.
The QuEChERSER Mega-Method Reprint Icon - (Trade Journal)
Lehotay, S.J. 2021. The QuEChERSER Mega-Method. LC GC North America. 40:13-19. https://chromatographyonline.com/view/the-quecherser-mega-method
Validation of the QuEChERSER mega-method for the analysis of pesticides, veterinary drugs, and environmental contaminants in tilapia (Oreochromis Niloticus) Reprint Icon - (Peer Reviewed Journal)
Monteiro, S.H., Lehotay, S.J., Sapozhnikova, Y.V., Ninga, E., Moura Andrade, G.C., Lightfield, A.R. 2022. Validation of the QuEChERSER mega-method for the analysis of pesticides, veterinary drugs, and environmental contaminants in tilapia (Oreochromis Niloticus). Food Additives & Contaminants. Part A. 39:699-709. https://doi.org/10.1080/19440049.2021.2020911.
Foreword in automated sample preparation: Methods for GC-MS and LC-MS - (Other)
Lehotay, S.J. 2021. Foreword in automated sample preparation: Methods for GC-MS and LC-MS. Hubschmann, H.J. Wiley. ISBN:945-3-527-81752-8. p. xiii-xiv.
Comparison of analyte identification criteria and other aspects in triple quadrupole tandem mass spectrometry: Case study using UHPLC-MS/MS for regulatory analysis of veterinary drug residues in liquid and powdered eggs Reprint Icon - (Peer Reviewed Journal)
Lehotay, S.J. 2022. Comparison of analyte identification criteria and other aspects in triple quadrupole tandem mass spectrometry: Case study using UHPLC-MS/MS for regulatory analysis of veterinary drug residues in liquid and powdered eggs. Analytical and Bioanalytical Chemistry. 414:287-302. https://doi.org/10.1007/s00216-021-03380-x.
Validation of a high-throughput method for analysis of pesticide residues in hemp and hemp products Reprint Icon - (Peer Reviewed Journal)
Michlig, N., Lehotay, S.J., Lightfield, A.R., Beldomenico, H., Repetti, M.R. 2021. Validation of a high-throughput method for analysis of pesticide residues in hemp and hemp products. Journal of Chromatography A. 1645:462097. https://doi.org/10.1016/j.chroma.2021.462097.
Comparison of four different multiclass, multiresidue sample preparation methods in the analysis of veterinary drugs in fish and other food matrices Reprint Icon - (Peer Reviewed Journal)
Lehotay, S.J., Lightfield, A.R. 2021. Comparison of four different multiclass, multiresidue sample preparation methods in the analysis of veterinary drugs in fish and other food matrices. Analytical and Bioanalytical Chemistry. 413:3223–3241. https://doi.org/10.1007/s00216-021-03259-x.
Critical review and re-assessment of analyte protectants in gas chromatography Reprint Icon - (Peer Reviewed Journal)
Rodriguez-Ramos, R., Lehotay, S.J., Michlig, N., Socas-Rodriguez, B., Rodriguez-Delgado, M.A. 2020. Critical review and re-assessment of analyte protectants in gas chromatography. Journal of Chromatography A. 1632:461596. https://doi.org/10.1016/j.chroma.2020.461596.
There is no time to waste: low-pressure gas chromatography–mass spectrometry is a proven solution for fast, sensitive, and robust GC–MS analysis - (Peer Reviewed Journal)
Lehotay, S.J., De Zeeuw, J., Sapozhnikova, Y.V., Michlig, N., Rousova, J., Konschnik, J.D. 2020. There is no time to waste: low-pressure gas chromatography–mass spectrometry is a proven solution for fast, sensitive, and robust GC–MS analysis. LC GC North America. 38:457-466. https://chromatographyonline.com/view/there-is-no-time-to-waste-low-pressure-gas-chromatography-mass-spectrometry-is-a-proven-solution
High-throughput mega-method for analysis of pesticides, veterinary drugs, and environmental contaminants by ultra-high-performance LC-TMS and robotic mini-solid-phase extraction cleanup + low-pressure GC-TMS, Part 1: Beef Reprint Icon - (Peer Reviewed Journal)
Monteiro, S.H., Lehotay, S.J., Sapozhnikova, Y.V., Ninga, E., Lightfield, A.R. 2020. High-throughput mega-method for the analysis of pesticides, veterinary drugs, and environmental contaminants by ultra-high-performance liquid chromatography-tandem mass spectrometry and robotic mini-solid-phase extraction cleanup + low-pressure gas chromatography-tandem mass spectrometry, Part 1: Beef. Journal of Agricultural and Food Chemistry. 69:1169-1174. https://doi.org/10.1021/acs.jafc.0c00710?ref=pdf
High-throughput mega-method for the analysis of pesticides, veterinary drugs, and environmental contaminants by UHPLC-MS/MS and robotic mini-SPE cleanup + LPGC-MS/MS. Part 2: Catfish Reprint Icon - (Peer Reviewed Journal)
Ninga, E., Sapozhnikova, Y.V., Lehotay, S.J., Lightfield, A.R., Monteiro, S. 2020. High-throughput mega-method for the analysis of pesticides, veterinary drugs, and environmental contaminants by ultra-high-performance liquid chromatography-tandem mass spectrometry and robotic mini-solid-phase extraction cleanup + low-pressure gas chromatography-tandem mass spectrometry, Part 2: Catfish. Journal of Agricultural and Food Chemistry. 69:1169-1174. https://doi.org/10.1021/acs.jafc.0c00995.
Assessment of test portion sizes after sample comminution with liquid nitrogen in the high-throughput analysis of pesticide residues in fruits and vegetables Reprint Icon - (Peer Reviewed Journal)
Lehotay, S.J., Michlig, N., Lightfield, A.R. 2020. Assessment of test portion sizes after sample comminution with liquid nitrogen in the high-throughput analysis of pesticide residues in fruits and vegetables. Journal of Agricultural and Food Chemistry. 68:1468-1479. https://doi.org/10.1021/acs.jafc.9b07685.
Extract-and-inject analysis of veterinary drug residues in catfish and ready-to-eat meats by ultrahigh-performance liquid chromatography – tandem mass spectrometry Reprint Icon - (Peer Reviewed Journal)
Lehotay, S.J., Lightfield, A.R. 2020. Extract-and-inject analysis of veterinary drug residues in catfish and ready-to-eat meats by ultrahigh-performance liquid chromatography – tandem mass spectrometry. Journal of AOAC International. 103(2): 584-606. https://doi.org/10.1093/jaoacint/qsz036.
Less than 1 minute low-pressure gas chromatography - mass spectrometry Reprint Icon - (Peer Reviewed Journal)
Fialkov, A.B., Lehotay, S.J., Amirav, A. 2019. Less than 1 minute low-pressure gas chromatography - mass spectrometry. Journal of Chromatography A. 1612:460691. https://doi.org/10.1016/j.chroma.2019.460691.
The (Long and Winding) Road to LPGC-MS Reprint Icon - (Trade Journal)
De Zeeuw, J., Hans-Gerd, J., Lehotay, S.J. 2021. The (Long and Winding) Road to LPGC-MS. The Analytical Scientist. https://doi.org/10.1016/j.chroma.2019.460691.
Cryogenic sample processing with liquid nitrogen for effective and efficient monitoring of pesticide residues in foods and feeds Reprint Icon - (Peer Reviewed Journal)
Roussey, M., Lehotay, S.J., Pollaehne, J. 2019. Cryogenic sample processing with liquid nitrogen for effective and efficient monitoring of pesticide residues in foods and feeds. Journal of Agricultural and Food Chemistry. 67(33):9203-9209. https://doi.org/10.1021/acs.jafc.9b04006.
Characterization of MS/MS product ions for the differentiation of structural isomeric pesticides by high-resolution mass spectrometry Reprint Icon - (Peer Reviewed Journal)
Nunez, A., Sapozhnikova, Y.V., Lehotay, S.J. 2018. Characterization of MS/MS product ions for the differentiation of structural isomeric pesticides by high-resolution mass spectrometry. Toxics. 6(4):59. https://doi.org/10.3390/toxics6040059 -.
Possibilities and limitations of isocratic fast liquid chromatography-tandem mass spectrometry analysis of pesticide residues in fruits and vegetables Reprint Icon - (Peer Reviewed Journal)
Lehotay, S.J. 2018. Possibilities and limitations of isocratic fast liquid chromatography-tandem mass spectrometry analysis of pesticide residues in fruits and vegetables. Chromatographia. 82:235-250. https://doi.org/10.1007/s10337-018-3595-0.
Hits and misses in research trends to monitor contaminants in foods Reprint Icon - (Review Article)
Lehotay, S.J., Chen, Y. 2018. Hits and misses in research trends to monitor contaminants in foods. Analytical and Bioanalytical Chemistry. 410:5331-5351. https://doi.org/10.1007/s00216-018-1195-3.
Food Safety Analysis Reprint Icon - (Other)
Lehotay, S.J. 2018. Food Safety Analysis. Analytical and Bioanalytical Chemistry. 410(22):5329:5330. https://doi.org/10.1007/s00216-018-1129-0.
Inter-laboratory validation of an inexpensive streamlined method to measure inorganic arsenic in rice grain Reprint Icon - (Peer Reviewed Journal)
Chaney, R.L., Green, C.E., Lehotay, S.J. 2018. Inter-laboratory validation of an inexpensive streamlined method to measure inorganic arsenic in rice grain. Analytical and Bioanalytical Chemistry. https://doi.org/10.1007/s00216-018-1075-x.
Use of a quality control approach to assess measurement uncertainty in the comparison of sample processing techniques in the analysis of pesticide residues in fruits and vegetables Reprint Icon - (Peer Reviewed Journal)
Lehotay, S.J., Han, L., Sapozhnikova, Y.V. 2018. Use of a quality control approach to assess measurement uncertainty in the comparison of sample processing techniques in the analysis of pesticide residues in fruits and vegetables. Analytical and Bioanalytical Chemistry. 410:5465-5479. https://doi.org/10.1007/s00216-018-0905-1.
Xiaonan Lu (Ed.):Sensing techniques for food safety and quality control Reprint Icon - (Other)
Lehotay, S.J. 2018. Xiaonan Lu (Ed.):Sensing techniques for food safety and quality control. Analytical and Bioanalytical Chemistry. 410(9)2271-2272. https://doi.org/10.1007/S00216-018-0891-3.
Comparison of room temperature and cryogenic sample processing in the analysis of chemical contaminants in foods Reprint Icon - (Peer Reviewed Journal)
Han, L., Lehotay, S.J., Sapozhnikova, Y.V. 2017. Comparison of room temperature and cryogenic sample processing in the analysis of chemical contaminants in foods. Journal of Agricultural and Food Chemistry. 66:4986-4996. https://doi.org/10.1021/acs.jafc.7b04359.
Simultaneous analysis of aminoglycosides with many other classes of drug residues in bovine tissues by ultra high-performance liquid chromatography-tandem mass spectrometry using an ion-pairing reagent added to final extracts - (Peer Reviewed Journal)
Lehotay, S.J., Lightfield, A.R. 2018. Simultaneous analysis of aminoglycosides with many other classes of drug residues in bovine tissues by ultra high-performance liquid chromatography-tandem mass spectrometry using an ion-pairing reagent added to final extracts. Analytical and Bioanalytical Chemistry. 410:195-1109.
Utility of the summation chromatographic peak integration function to avoid manual reintegrations in the analysis of targeted analytes - (Peer Reviewed Journal)
Lehotay, S.J. 2017. Utility of the summation chromatographic peak integration function to avoid manual reintegrations in the analysis of targeted analytes. LC GC North America. 35:391-402.
Comparison of veterinary drug residue results in animal tissues by ultrahigh-performance liquid chromatography coupled to triple quadrupole ... use of a commercial lipid removal product Reprint Icon - (Peer Reviewed Journal)
Anumol, T., Lehotay, S.J., Stevens, J., Zweigenbaum, J. 2017. Comparison of veterinary drug residue results in animal tissues by ultrahigh-performance liquid chromatography coupled to triple quadrupole ... use of a commercial lipid removal product. Analytical and Bioanalytical Chemistry. 409:2639-2653.
Simpler less expensive method for analysis of inorganic as (iAs) in rice - (Other)
Chaney, R.L., Green, C.E., Lehotay, S.J., Bukowski, M.R. 2016. Simpler less expensive method for analysis of inorganic as (iAs) in rice. Final Project Report to USA Rice Foundation. 30 pp.
5th Latin American pesticide residue workshop (LAPRW 2015) - (Proceedings)
Lehotay, S.J. 2016. 5th Latin American pesticide residue workshop (LAPRW 2015). Chromatographia. 79:1057-1059. doi: 10.1007/s10337-016-3139-4.
Automated mini-column solid-phase extraction cleanup for high-throughput analysis of chemical contaminants in foods by low-pressure gas chromatography – tandem mass spectrometry - (Peer Reviewed Journal)
Lehotay, S.J., Han, L., Sapozhnikova, Y.V. 2016. Automated mini-column solid-phase extraction cleanup for high-throughput analysis of chemical contaminants in foods by low-pressure gas chromatography – tandem mass spectrometry. Chromatographia. 79:1113-1130. doi: 10.1007/s10337-016-3116-y.
Evaluation of a recent product to remove lipids and other matrix co-extractives in the analysis of pesticide residues and environmental contaminants in foods - (Peer Reviewed Journal)
Han, L., Matarrita-Rodriguez, J.A., Sapozhnikova, Y.V., Lehotay, S.J. 2016. Evaluation of a recent product to remove lipids and other matrix co-extractives in the analysis of pesticide residues and environmental contaminants in foods. Journal of Chromatography A. 1449:17-29. doi: 10.1016/j.chroma.2016.04.052.
Multiresidue analysis of pesticides in straw roughage by liquid chromatography - tandem mass spectrometry - (Peer Reviewed Journal)
Zhang, Z., Feng, M., Zhu, K., Han, L., Sapozhnikova, Y.V., Lehotay, S.J. 2016. Multiresidue analysis of pesticides in straw roughage by liquid chromatography - tandem mass spectrometry. Journal of Agricultural and Food Chemistry. 64:6091-6099. doi: 10.1021/acs.jafc.5b05981.
Method validation for 243 pesticides and environmental contaminants in meats and poultry by tandem mass spectrometry coupled to low-pressure gas chromatography and ultra high-performance liquid chromatography - (Peer Reviewed Journal)
Han, L., Sapozhnikova, Y.V., Lehotay, S.J. 2016. Method validation for 243 pesticides and environmental contaminants in meats and poultry by tandem mass spectrometry coupled to low-pressure gas chromatography and ultra high-performance liquid chromatography. Food Control. 66:270-282.
Structural characterization of product ions of regulated veterinary drugs by electrospray ionization and quadrupole time-of-flight mass spectrometry (part 3) Anthelmintics, thyreostats, and flukicides - (Peer Reviewed Journal)
Nunez, A., Lehotay, S.J., Lightfield, A.R. 2016. Structural characterization of product ions of regulated veterinary drugs by electrospray ionization and quadrupole time-of-flight mass spectrometry (part 3) Anthelmintics, thyreostats, and flukicides. Journal of Rapid Communications in Mass Spectroscopy. 30:813-822.
Analysis of nitrosamines in cooked bacon by QuEChERS sample preparation and gas chromatography – tandem mass spectrometry with backflushing Reprint Icon - (Peer Reviewed Journal)
Lehotay, S.J., Sapozhnikova, Y.V., Han, L., Johnston, J.J. 2015. Analysis of nitrosamines in cooked bacon by QuEChERS sample preparation and gas chromatography – tandem mass spectrometry with backflushing. Journal of Agricultural and Food Chemistry. 63:10341-10351.
Review of recent developments and applications in low-pressure (vacuum outlet) gas chromatography - (Review Article)
Sapozhnikova, Y.V., Lehotay, S.J. 2015. Review of recent developments and applications in low-pressure (vacuum outlet) gas chromatography. Analytica Chimica Acta. 899:13-22. doi: 10.1016/j.aca.2015.10.003.
Multiresidue analysis of pesticides in traditional Chinese medicines using gas chromatography - negative chemical ionization tandem mass spectrometry Reprint Icon - (Peer Reviewed Journal)
Nie, J., Miao, S., Lehotay, S.J., Li, W., Zhou, H., Mao, X., Lu, J., Lan, L., Ji, S. 2015. Multiresidue analysis of pesticides in traditional Chinese medicines using gas chromatography - negative chemical ionization tandem mass spectrometry. Food Additives & Contaminants. Part A. 32:1287-1300. doi: 10.1080/19440049.2015.1055340.
Evaluation of different parameters in the extraction of incurred pesticides and environmental contaminants in fish Reprint Icon - (Peer Reviewed Journal)
Sapozhnikova, Y.V., Lehotay, S.J. 2015. Evaluation of different parameters in the extraction of incurred pesticides and environmental contaminants in fish. Journal of Agricultural and Food Chemistry. 63:5163-5168. https://doi.org/10.1021/jf506256q.
Sampling and sample processing in pesticide residue analysis Reprint Icon - (Peer Reviewed Journal)
Lehotay, S.J., Cook, J. 2015. Sampling and sample processing in pesticide residue analysis. Journal of Agricultural and Food Chemistry. DOI: 10.1021/jf5056985.
Residues in food and feed topic area at the 13th IUPAC International Congress of pesticide chemistry Reprint Icon - (Proceedings)
Lehotay, S.J., Riter, L.S., Saha, M. 2015. Residues in food and feed topic area at the 13th IUPAC International Congress of pesticide chemistry. Journal of Agricultural and Food Chemistry. DOI: 10.1021/jf5059599.
Current issues involving screening and identification of chemical contaminants in foods by mass spectrometry Reprint Icon - (Peer Reviewed Journal)
Lehotay, S.J., Sapozhnikova, Y.V., Mol, H. 2015. Current issues involving screening and identification of chemical contaminants in foods by mass spectrometry. Trends in Analytical Chemistry. 69:62-75.
Evaluation of a fast and simple sample preparation method for PBDE flame retardants and DDT pesticides in fish for analysis by ELISA compared with GC-MS/MS Reprint Icon - (Peer Reviewed Journal)
Sapozhnikova, Y.V., Simons, T., Lehotay, S.J. 2015. Evaluation of a fast and simple sample preparation method for PBDE flame retardants and DDT pesticides in fish for analysis by ELISA compared with GC-MS/MS. Agricultural Food and Science. 63:4429-4434.
Structural characterization of product ions by electrospray ionization and quadrupole time-of-flight mass spectrometry to support regulatory analysis of veterinary drug residues in foods Part 2: Benzimidazoles nitromidaz..... - (Peer Reviewed Journal)
Nunez, A., Lehotay, S.J., Geis-Asteggiente, L. 2015. Structural characterization of product ions by electrospray ionization and quadrupole time-of-flight mass spectrometry to support regulatory analysis of veterinary drug residues in foods Part 2: Benzimidazoles nitromidaz...... Rapid Communications in Mass Spectrometry. 29(9):719-729.
Validation of a streamlined multiclass, multiresidue method for determination of veterinary drug residues in bovine muscle by liquid chromatography-tandem mass spectrometry Reprint Icon - (Peer Reviewed Journal)
Schneider, M.J., Lehotay, S.J., Lightfield, A.R. 2014. Validation of a streamlined multiclass, multiresidue method for determination of veterinary drug residues in bovine muscle by liquid chromatography-tandem mass spectrometry. Analytical and Bioanalytical Chemistry. DOI:10.1007/s00216-014-8386-3.
Use of ammonium formate in QuEChERS for high-throughput analysis of pesticides in food by fast, low-pressure gas chromatography and liquid chromatography tandem mass spectrometry - (Peer Reviewed Journal)
Gonzalez-Curbelo, M.A., Lehotay, S.J., Hernandez-Borges, J., Rodrigues-Delgado, M.A. 2014. Use of ammonium formate in QuEChERS for high-throughput analysis of pesticides in food by fast, low-pressure gas chromatography and liquid chromatography tandem mass spectrometry. Journal of Chromatography A. doi: 10.1016/j.chroma.2014.06.104.
ESI-Q-TOF structural characterization of prominent MS/MS product ions of veterinary drugs for improved regulatory monitoring - (Proceedings)
Nunez, A., Lehotay, S.J., Geis-Asteggiente, L. 2015. ESI-Q-TOF structural characterization of prominent MS/MS product ions of veterinary drugs for improved regulatory monitoring. Proceedings of the ASMS Conference on Mass Spectrometry and Allied Topics. http://www.asms.org/publications/abstracts-and-proceedings.
Streamlined sample cleanup using combined dispersive solid-phase extraction and in-vial filtration for analysis of pesticides and environmental pollutants in shrimp Reprint Icon - (Peer Reviewed Journal)
Han, L., Sapozhnikova, Y.V., Lehotay, S.J. 2014. Streamlined sample cleanup using combined dispersive solid-phase extraction and in-vial filtration for analysis of pesticides and environmental pollutants in shrimp. Analytica Chimica Acta. 827:40-46. http://dx.doi.org/10.1016/j.aca.2014.04.005.
Structural characterization of fragment ions by electrospray ionization and Q-TOF mass spectrometry to support regulatory analysis of veterinary drug residues in foods Reprint Icon - (Peer Reviewed Journal)
Nunez, A., Geis-Asteggiante, L., Lehotay, S.J., Lightfield, A.R. 2014. Structural characterization of fragment ions by electrospray ionization and Q-TOF mass spectrometry to support regulatory analysis of veterinary drug residues in foods. Rapid Communications in Mass Spectrometry. 28(10):1061-1081.
Analysis of pesticide residues in strawberries and soils by GC-MS/MS, LC-MS/MS and two-dimensional GC-time-of-flight MS comparing organic and integrated pest management farming Reprint Icon - (Peer Reviewed Journal)
Fernandez, V., Lehotay, S.J., Geis-Asteggiante, L., Kwon, H., Mol, H.G., Van Der Kamp, H., Mateus, N., Delerue-Matos, C., Domingues, V.F. 2014. Analysis of pesticide residues in strawberries and soils by GC-MS/MS, LC-MS/MS and two-dimensional GC-time-of-flight MS comparing organic and integrated pest management farming. Food Control. http://dx.doi.org/10.1080/19440049.2013.865842.
Supercritical fluid chromatography-tandem mass spectrometry for the analysis of lipid A Reprint Icon - (Peer Reviewed Journal)
Chen, Y., Lehotay, S.J., Moreau, R.A. 2013. Supercritical fluid chromatography-tandem mass spectrometry for the analysis of lipid A. Analytical Methods. DOI: 10.1039/C3AY41344F.
Rapid analysis of aminoglycoside antibiotics in bovine tissues using disposable pipette extraction and ultrahigh performance liquid chromatography - tandem mass spectrometry Reprint Icon - (Peer Reviewed Journal)
Lehotay, S.J., Mastovska, K., Lightfield, A.R., Nunez, A., Dutko, T., Ng, C., Bluhm, L. 2013. Rapid analysis of aminoglycoside antibiotics in bovine tissues using disposable pipette extraction and ultrahigh performance liquid chromatography - tandem mass spectrometry. Journal of Chromatography A. 1313:103-112.
Terbium-sensitized luminescence screening method for fluoroquinolones in beef serum - (Peer Reviewed Journal)
Schneider, M.J., Yun, L., Lehotay, S.J. 2013. Terbium-sensitized luminescence screening method for fluoroquinolones in beef serum. Food Additives & Contaminants. 30(4):666-669.
The use of ultra-high pressure liquid chromatography with tandem mass spectrometric detection of analysis of agrochemical residues and mycotoxines in food - challenges and applications Reprint Icon - (Review Article)
O'Mahony, J., Clarke, L., Whelan, M., O'Kennedy, R., Lehotay, S.J., Danaher, M. 2013. The use of ultra-high pressure liquid chromatography with tandem mass spectrometric detection of analysis of agrochemical residues and mycotoxines in food - challenges and applications. Journal of Chromatography A. 1292:83-95.
Multi-class, multi-residue analysis of pesticides, polychlorinated biphenyls, polycyclic aromatic hydrocarbons, polybrominated diphenyl ethers and novel flame retardants....mass spectrometry - (Peer Reviewed Journal)
Sapozhnikova, Y.V., Lehotay, S.J. 2013. Multi-class, multi-residue analysis of pesticides, polychlorinated biphenyls, polycyclic aromatic hydrocarbons, polybrominated diphenyl ethers and novel flame retardants....mass spectrometry. Analytica Chimica Acta. 758:80-92.
Ruggedness testing and validation of a practical analytical method for > 100 veterinary drug residues in bovine muscle by ultrahigh performance liquid chromatography – tandem mass spectrometry - (Peer Reviewed Journal)
Geis-Asteggiante, L., Lehotay, S.J., Lightfield, A.R., Dutko, T., Ng, C., Bluhm, L. 2012. Ruggedness testing and validation of a practical analytical method for > 100 veterinary drug residues in bovine muscle by ultrahigh performance liquid chromatography – tandem mass spectrometry. Journal of Chromatography A. 1258:43-54.
Variability of matrix effects in liquid and gas chromatography - mass spectrometry analysis of pesticide residues after QuEChERS sample preparation of different food crops - (Peer Reviewed Journal)
Kwon, H., Lehotay, S.J., Geis-Asteggiante, L. 2012. Variability of matrix effects in liquid and gas chromatography - mass spectrometry analysis of pesticide residues after QuEChERS sample preparation of different food crops. Journal of Chromatography A. 1270:235-245.
A non-targeted comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry method and software for inventorying persistent and bioaccumulative contaminants in marine environments - (Peer Reviewed Journal)
Hoh, E., Dodder, N.G., Lehotay, S.J., Pangallo, K.C., Reddy, C.M., Maruya, K.A. 2012. A non-targeted comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry method and software for inventorying persistent and bioaccumulative contaminants in marine environments. Journal of Environmental Science and Technology. 46(15):8001–8008.
Evaluation of a multiclass, multiresidue liquid chromatography-tandem mass spectrometry method for analysis of 120 veterinary drugs in bovine kidney - (Peer Reviewed Journal)
Schneider, M.J., Lehotay, S.J., Lightfield, A.R. 2012. Evaluation of a multiclass, multiresidue liquid chromatography-tandem mass spectrometry method for analysis of 120 veterinary drugs in bovine kidney. Drug Testing and Analysis Journal. 4(1):91-102.
Development and validation of a streamlined method designed to detech residues of 62 veterinary drugs in bovine kidney using ultrahigh performance liquid chromatography - tandem mass spectrometry - (Peer Reviewed Journal)
Lehotay, S.J., Lightfield, A.R., Geis-Asteggiante, L., Schneider, M.J., Dutko, T., Ng, C., Bluhm, L., Mastovska, K. 2012. Development and validation of a streamlined method designed to detech residues of 62 veterinary drugs in bovine kidney using ultrahigh performance liquid chromatography - tandem mass spectrometry. Drug Testing and Analysis Journal. 4:75-90.
A multiclass multiresidue LC-MS/MS method for analysis of veterinary drugs in bovine kidney - (Proceedings)
Schneider, M.J., Lehotay, S.J., Lightfield, A.R. 2012. A multiclass multiresidue LC-MS/MS method for analysis of veterinary drugs in bovine kidney. Euroresidue Conference Proceedings. 2:515.
Effects of temperature and purity of magnesium sulfate during extraction of pesticides residues using the QuEChERS method - (Peer Reviewed Journal)
Geis-Asteggiante, L., Lehotay, S.J., Heinzen, H. 2012. Effects of temperature and purity of magnesium sulfate during extraction of pesticides residues using the QuEChERS method. Official Methods of Analysis of AOAC International. 95(5)1311-1318.
Fast,low-pressure gas chromatography triple quadrupole tandem mass spectrometry for analysis of 150 pesticide residues in fruits and vegetables - (Peer Reviewed Journal)
Koesukwiwat, U., Lehotay, S.J., Leepipatpiboon, N. 2011. Fast,low-pressure gas chromatography triple quadrupole tandem mass spectrometry for analysis of 150 pesticide residues in fruits and vegetables. Journal of Chromatography. 1218:7039-7050.
The 47th annual Florida pesticide residue workshop - (Proceedings)
Lehotay, S.J., Cochran, J. 2011. The 47th annual Florida pesticide residue workshop. Journal of Agricultural and Food Chemistry. 59:7535-7535.
Partners in research exceed the sum of the parts: partners > parts - (Trade Journal)
Lehotay, S.J. 2011. Partners in research exceed the sum of the parts: partners > parts. Inside Laboratory Management. 15(3):11.
Development and validation of a rapid method for microcystins in fish and comparing LC-MS/MS results with ELISA - (Peer Reviewed Journal)
Geis-Asteggiante, L., Lehotay, S.J., Fortis, L.L., Paoli, G., Wijey, C., Heinzen, H. 2011. Development and validation of a rapid method for microcystins in fish and comparing LC-MS/MS results with ELISA. Analytical and Bioanalytical Chemistry. 401:2617-2630.
Qualitative aspects in the analysis of pesticide residues in fruits and vegetables using fast, low-pressure gas chromatography - time-of-flight mass spectrometry - (Peer Reviewed Journal)
Lehotay, S.J., Koesukwiwat, U., Van Der Kamp, H., Mol, H.G., Leepipatpiboon, N. 2011. Qualitative aspects in the analysis of pesticide residues in fruits and vegetables using fast, low-pressure gas chromatography - time-of-flight mass spectrometry. Journal of Agricultural and Food Chemistry. 59:7544-7556.
Extension of the QuEChERS Method for Pesticide Residues in Cereals to Flaxseeds, Peanuts, and Doughs - (Peer Reviewed Journal)
Koesukwiwat, U., Lehotay, S.J., Mastovska, K., Dorweiler, K.J., Leepitpatpiboon, N. 2010. Extension of the QuEChERS Method for Pesticide Residues in Cereals to Flaxseeds, Peanuts, and Doughs. Journal of Agricultural and Food Chemistry. 58:5950-5958.
A dual validation approach to detect anthelmintic residues in bovine liver over an extended concentration range - (Peer Reviewed Journal)
Kinsella, B., Whelan, M., Cantwell, H., Mccormack, M., Furey, A., Lehotay, S.J., Danaher, M. 2010. A dual validation approach to detect anthelmintic residues in bovine liver over an extended concentration range. Talanta. 83:14-24.
Issues in mass spectrometry between bench chemists and regulatory laboratory managers - (Peer Reviewed Journal)
Heller, D.N., Lehotay, S.J., Matos, P.A., Hammack, W., Fernandez-Alba, A.R. 2010. Issues in mass spectrometry between bench chemists and regulatory laboratory managers. Journal of Association of Official Analytical Chemists International. 93(5):1625-1632.
Time-resolved luminescence screening method for enrofloxacin in beef serum - (Abstract Only)
Schneider, M.J., Yun, L., Lehotay, S.J. 2010. Time-resolved luminescence screening method for enrofloxacin in beef serum [Abstract]. 31.
Routine approach to qualitatively screen for 300 pesticides and quantify those frequently detected in fruits and vegetables using liquid chromatography tandem mass spectrometry - (Peer Reviewed Journal)
Kmellar, B., Abranko, L., Fodor, P., Lehotay, S.J. 2010. Routine approach to qualitatively screen for 300 pesticides and quantify those frequently detected in fruits and vegetables using liquid chromatography tandem mass spectrometry. Journal of Chromatography A. 27(10):1415-1430.
High throughput analysis of 150 pesticides in fruits and vegetables using QuEChERS and low-pressure gas chromatography – time-of-flight - (Peer Reviewed Journal)
Koesukwiwat, U., Lehotay, S.J., Miao, S., Leepipatpiboon, N. 2010. High throughput analysis of 150 pesticides in fruits and vegetables using QuEChERS and low-pressure gas chromatography – time-of-flight. Journal of Chromatography A. 1217:6692-6703.
Determination of anthelmintic drug residues in milk using UPLC-MS/MS with rapid polarity switching - (Peer Reviewed Journal)
Whelan, M., Kinsella, B., Furey, A., Cantwell, H., Lehotay, S.J., Danaher, M. 2010. Determination of anthelmintic drug residues in milk using UPLC-MS/MS with rapid polarity switching. Journal of Chromatography A. 1217(27):4612-4622.
QuEChERS, a sample preparation technique that is “catching on”: an up-to-date interview with its inventors - (Trade Journal)
Lehotay, S.J., Anastassiades, M., Majors, R. 2010. QuEChERS, a sample preparation technique that is “catching on”: an up-to-date interview with its inventors. LC GC North America. 28(7):504-516.
The QuEChERS revolution - (Trade Journal)
Lehotay, S.J., Anastassiades, M., Majors, R. 2010. The QuEChERS revolution. LC GC Europe. 23.
Multi-Analyst, Multi-Matrix Performance of the QuEChERS Approach for Pesticide Residues in Foods and Feeds Using LC-MS/MS Analysis with Different Calibration Techniques - (Peer Reviewed Journal)
Lehotay, S.J., Mastovska, K., Lightfield, A.R., Gates, R.A. 2010. Multi-Analyst, Multi-Matrix Performance of the QuEChERS Approach for Pesticide Residues in Foods and Feeds Using LC-MS/MS Analysis with Different Calibration Techniques. Journal of Association of Official Analytical Chemists International. 93(2):355-367.
Sample preparation approaches for the analysis of pesticide residues in olives and olive oils - (Book / Chapter)
Cunha, S.C., Lehotay, S.J., Mastovska, K., Fernandes, J.O., Oliveira, M. 2010. Sample preparation approaches for the analysis of pesticide residues in olives and olive oils. In: Preedy, V.R., Watson, R.R., editors. Olives and Olive in Health and Disease Prevention. Oxford: Academic Press p. 653-666.
Comparison of QuEChERS sample preparation methods for the analysis of pesticide residues in fruits and vegetables - (Peer Reviewed Journal)
Lehotay, S.J., Son, K.A., Kwon, H., Koesukwiwat, U., Fu, W., Mastovska, K., Hoh, E. 2010. Comparison of QuEChERS sample preparation methods for the analysis of pesticide residues in fruits and vegetables. Journal of Chromatography A. 1217:2548-2560.
Pesticide Multiresidue Analysis in Cereal Grains Using Modified QuEChERS Method Combined with Automated Direct Sample Introduction GC-TOFMS and UPLC-MS/MS Techniques - (Peer Reviewed Journal)
Mastovska, K., Dorweiler, K., Lehotay, S.J., Wegscheid, J.S., Szpylka, K.A. 2010. Pesticide Multiresidue Analysis in Cereal Grains Using Modified QuEChERS Method Combined with Automated Direct Sample Introduction GC-TOFMS and UPLC-MS/MS Techniques. Journal of Agricultural and Food Chemistry. 58:5959-5972.
QuEChERS sample preparation approach for mass spectrometric analysis of pesticide residues in foods - (Book / Chapter)
Lehotay, S.J. 2011. QuEChERS sample preparation approach for mass spectrometric analysis of pesticide residues in foods. In: Zweigenbaum, J., editor. Mass Spectronmetry in Food Safety: Methods and Protocols. Methods in Molecular Biology. Springer Science+Business Media. Humana Press. 747. DOI: 10.1007/978-1-61779-136-9_4.
Blind Analysis of Fortified Pesticide Residues in Carrot Extracts using GC-MS to Evaluate Qualitative and Quantitative Performance - (Peer Reviewed Journal)
Lehotay, S.J., Gates, R.A. 2009. Blind Analysis of Fortified Pesticide Residues in Carrot Extracts using GC-MS to Evaluate Qualitative and Quantitative Performance. Journal of Separation Science. 32:3706-3719.
Capabilities of Direct Sample Introduction - Comprehensive Two-Dimensional Gas Chromatgraphy-Time-of-Flight Mass Spectrometry to Analyze Organic Chemicals of Interest in Fish Oils - (Peer Reviewed Journal)
Hoh, E., Lehotay, S.J., Mastovska, K., Ngo, H., Vetter, W., Pangallo, K.C., Reddy, C.M. 2009 Capabilities of Direct Sample Introduction - Comprehensive Two-Dimensional Gas Chromatgraphy-Time-of-Flight Mass Spectrometry to Analyze Organic Chemicals of Interest in Fish Oils. Environmental Science and Technology. 43:3240-3247.
Simultaneous quantitation of multiple classes of organohalogen compounds in fish oils with direct sample introduction comprehensive two-dimensional gas chromatography and time-of-flight mass spectrometry - (Peer Reviewed Journal)
Hoh, E., Lehotay, S.J., Mastovska, K., Ngo, H., Vetter, W., Pangallo, K., Reddy, C. 2009. Simultaneous quantitation of multiple classes of organohalogen compounds in fish oils with direct sample introduction comprehensive two-dimensional gas chromatography and time-of-flight mass spectrometry. Journal of Agricultural and Food Chemistry. 57(7):2653-2660.
Comparison of screening methods for antibiotics in beef kidney juice and serum - (Peer Reviewed Journal)
Schneider, M.J., Mastovska, K., Lehotay, S.J., Lightfield, A.R., Kinsella, B., Shultz, C.2009. Comparison of screening methods for antibiotics in beef kidney juice and serum. Analytica Chimica Acta. 637:290-297.
Identification and confirmation of chemical residues by chromatography-mass spectrometry and other techniques - (Peer Reviewed Journal)
Lehotay, S.J., Mastovska, K., Amirav, A., Fialkov, A.B., Alon, T., Martos, P.A., Kok, A., Fernandez-Alba, A.R. 2009. Identification and confirmation of chemical residues by chromatography-mass spectrometry and other techniques. Trends in Analytical Chemistry. 27(11):1070-1090.
New Method for the Analysis of Flukicide and Other Anthelmintic Residues in Bovine Milk and Liver using LC-MS/MS - (Peer Reviewed Journal)
Kinsella, B., Lehotay, S.J., Mastovska, K., Lightfield, A.R., Furey, A., Danaher, M. 2009. New Method for the Analysis of Flukicide and Other Anthelmintic Residues in Bovine Milk and Liver using Liquid Chromatography - Tandem Mass Spectrometry. Anal. Chim. Acta. (637):196-207.
Ultra-Trace Analysis of Nine Macrolides, including Tulathromycin A (Draxxin), in Edible Animal Tissues with Mini-Column Liquid Chromatography Tandem Mass Spectrometry - (Peer Reviewed Journal)
Martos, P.A., Lehotay, S.J., Shurmer, B. 2008. Ultra-Trace Analysis of Nine Macrolides, including Tulathromycin A (Draxxin), in Edible Animal Tissues with Mini-Column Liquid Chromatography Tandem Mass Spectrometry. Journal of Agriculture and Food Chemistry. 56(19):8844-8850.
New Method for Analysis of Multiple Anthelmintic Residues in Animal Tissue - (Proceedings)
Kinsella, B., Lehotay, S.J., Lightfield, A.R., Mastovska, K., Furey, A., Danaher, M. 2008. New Method for Analysis of Multiple Anthelmintic Residues in Animal Tissue. Euroresidue Conference Proceedings. p.1147-1152.
A Comparison of the FAST, Premi® and KIS (TradeMark) Tests for Detection of Antibiotics in Beef Kidney Juice and Serum - (Proceedings)
Schneider, M.J., Lehotay, S.J., Mastovska, K., Lightfield, A.R., Kinsella, B., Shultz, C. 2008. A comparison of the fast, premi® and kis (trademark) tests for detection of antibiotics in beef kidney juice and serum. Proceedings of Euroresidue VI - Residues of Veterinary Drugs in Food Conference. p.389-394.
Evaluation of automated direct sample introduction with comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry for the screening analysis of dioxins of fish oil - (Peer Reviewed Journal)
Hoh, E., Lehotay, S.J., Mastovska, K., Huwe, J.K. 2008. Evaluation of automated direct sample introduction with comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry for the screening analysis of dioxins of fish oil. Journal of Chromatography A. 1201(1):69-77.
A Comparison of the FAST, Premi® and KIS(TradeMark) Tests for Screening Antibiotic Residues in Beef Kidney Juice and Serum - (Peer Reviewed Journal)
Schneider, M.J., Lehotay, S.J. 2008. A Comparison of the FAST, Premi® and KIS(TradeMark) Tests for Screening Antibiotic Residues in Beef Kidney Juice and Serum. Analytical and Bioanalytical Chemistry. 390(7):1775-1779.
Rapid analysis of multiple pesticide residues in fruit-based baby food using programmed temperature vaporiser injection–low pressure gas chromatography–high-resolution time-of-flight mass spectrometry - (Peer Reviewed Journal)
Cajka, T., Hajslova, J., Lacina, O., Mastovska, K., Lehotay, S.J. 2008. Rapid analysis of multiple pesticide residues in fruit-based baby food using programmed temperature vaporiser injection–low pressure gas chromatography–high-resolution time-of-flight mass spectrometry. Journal of Chromatography A. 1186:281-294.
Validation of an Efficient Method for the Determination of Pesticide Residues in Fruits and Vegetables Using Ethyl Acetate for Extraction - (Peer Reviewed Journal)
Aysal, P., Ambrus, A., Lehotay, S.J., Cannavan, A. 2007. Validation of an Efficient Method for the Determination of Pesticide Residues in Fruits and Vegetables Using Ethyl Acetate for Extraction. Journal of Environmental Science and Health B. 42:481-490.
Determination of Pesticide Residues in Foods by Acetonitrile Extraction and Partitioning with Magnesium Sulfate: Collaborative Study - (Peer Reviewed Journal)
Lehotay, S.J. 2007. Determination of Pesticide Residues in Foods by Acetonitrile Extraction and Partitioning with Magnesium Sulfate: Collaborative Study. Journal of the Association of Official Analytical Chemists.90:485-520
Optimization of separation and detection conditions for comprehensive two-dimensional gas chromatography-time-of-flight mass spectrometry analysis of polychlorinated dibenzo-p-dioxins and dibenzofurans - (Peer Reviewed Journal)
Hoh, E., Mastovska, K., Lehotay, S.J. 2007. Optimization of separation and detection for comprehensive two-dimensional gas chromatography-time-of-flight mass spectrometry analysis of polychlorinated dibenzo-p-dioxins and dibenzofurans. Journal of Chromatography A. 1145:210-221.
Evalualtion of the QuEChERS sample preparation approach for the analysis of pesticide residues in olives - (Peer Reviewed Journal)
Cunha, S., Lehotay, S.J., Mastovska, K., Fernandes, J.O., Oliveira, M.P. 2007. Evalualtion of the QuEChERS sample preparation approach for the analysis of pesticide residues in olives. Journal of Separation Science. 30:620-632.
RAPID SAMPLE PREPARATION METHOD FOR LC-MS/MS OR GC-MS ANALYSIS FOR ACRYLAMIDE IN VARIOUS FOOD MATRICES - (Peer Reviewed Journal)
Mastovska, K., Lehotay, S.J. 2006. Rapid sample preparation method for lc-ms/ms or gc-ms analysis for acrylamide in various food matrices. Journal of Agricultural and Food Chemistry. 54:7001-7008
SENSITIVITY AND NOISE IN GC-MS: ACHIEVING LOW LIMITS OF DETECTION FOR DIFFICULT ANALYTES - (Peer Reviewed Journal)
Fialkov, A.B., Steiner, U., Lehotay, S.J., Amirav, A. 2006. Sensitivity and noise in gc-ms: achieving low limits of detection for difficult analytes. International Journal of Mass Spectrometry. 260:31-48
RAPID ANALYSIS OF CHEMICAL RESIDUES IN FOOD - (Abstract Only)
Lehotay, S.J. 2006. RAPID ANALYSIS OF CHEMICAL RESIDUES IN FOOD. Proceedings of Pittcon Meeting.
A SIMPLE AND INEXPENSIVE "SOLVENT IN SILICONE TUBE EXTRACTION" APPROACH AND ITS EVALUATION IN THE GAS CHROMATOGRAPHIC ANALYSIS OF PESTICDES IN FRUITS AND VEGETABLES - (Peer Reviewed Journal)
Janska, M., Lehotay, S.J., Mastovska, K., Hajslova, J., Alon, T., Amirav, A. 2006. A simple and inexpensive "solvent in silicone tube extraction" approach and its evaluation in the gas chromatographic analysis of pesticdes in fruits and vegetables. Journal of Separation Science.(29)66-88.
STUDY OF A COMBINATION OF ANALYTE PROTECTANTS TO OVERCOME MATRIX EFFECTS IN ROUTINE GC ANALYSIS OF PESTICIDE RESIDUES IN FOOD MATRICES - (Peer Reviewed Journal)
Mastovska, K., Lehotay, S.J., Anastassiades, M. 2005. Study of a combination of analyte protectants to overcome matrix effects in routine gc analysis of pesticide residues in food matrices. Analytical Chemistry. 77(24):129-8137
USE OF AUTOMATED DIRECT SAMPLE INTRODUCTION WITH ANALYTE PROTECTANTS IN THE GC-MS ANALYSIS OF PESTICIDE RESIDES - (Peer Reviewed Journal)
Cajka, T., Mastovska, K., Lehotay, S.J., Hajslova, J. 2005. Use of automated direct sample introduction with analyte protectants in the gc-ms analysis of pesticide resides. Journal of Separation Science. 28. pp. 1048-1060.
DETECTING VETERINARY DRUG RESIDUES IN FEED AND CATTLE - (Book / Chapter)
Lehotay, S.J., Mastovska, K., Thiex, N. 2005. Detecting veterinary drug residues in feed and cattle. Improving the safety of fresh meat. J. Sofos (Ed.) Woodhead Publishing. Cambridge, UK. p.102-131.
CONFIRMATORY AND QUANTITATIVE ANALYSIS OF B-LACTAM ANTIBIOTICS IN BOVINE KIDNEY TISSUE BY DISPERSIVE SOLID-PHASE EXTRACTION AND LIQUID CHROMATOGRAPHY-TANDEM MASS SPECTROMETRY - (Peer Reviewed Journal)
Fagerquist, C.K., Lightfield, A.R., Lehotay, S.J. 2005. Confirmatory and quantitative analysis of b-lactam antibiotics in bovine kidney tissue by dispersive solid-phase extraction and liquid chromatography-tandem mass spectrometry. Analytical Chemistry 5(77).1473-1482.
Review of modern practice of gas chromatography - (Other)
Lehotay, S.J. 2005. Review of modern practice of gas chromatography. 4TH Edition of Inside Laboratory Management. Jan/Feb. p.17-18.
EVALUATION OF TWO FAST AND EASY METHODS FOR PESTICIDE RESIDUE ANALYSIS IN FATTY FOOD MATRICES - (Peer Reviewed Journal)
Lehotay, S.J., Mastovska, K., Jong, Y. 2005. Evaluation of two fast and easy methods for pesticide residue analysis in fatty food matrices. Journal of Association of Official Analytical Chemists International. 88. pp. 630-638.
USE OF BUFFERING TO IMPROVE RESULTS OF PROBLEMATIC PESTICIDES IN A FAST AND EASY METHOD FOR RESIDUE ANALYSIS OF FRUITS AND VEGETABLES - (Peer Reviewed Journal)
Lehotay, S.J., Mastovska, K., Lightfield, A.R. 2005. Use of buffering to improve results of problematic pesticides in a fast and easy method for residue analysis of fruits and vegetables. Journal of Association of Official Analytical Chemists International. 88.pp. 615-629.
VALIDATION OF A FAST AND EASY METHOD FOR THE DETERMINATION OF 229 PESTICIDE RESIDUES IN FRUITS AND VEGETABLES USING GAS AND LIQUID CHROMATOGRAPHY AND MASS SPECTROMETRIC DETECTION - (Peer Reviewed Journal)
Lehotay, S.J., De Kok, A., Hiemstra, M., Van Bodegraven, P. 2005. Validation of a fast and easy method for the determination of 229 pesticide residues in fruits and vegetables using gas and liquid chromatography and mass spectrometric detection. Journal of Association of Official Analytical Chemists International. 2005. v. 88. p. 595-614.
RUGGEDNESS AND OTHER PERFORMANCE CHARACTERISTICS OF LOW-PRESSURE GAS CHROMATOGRAPHY-MASS SPECTROMETRY FOR THE FAST ANALYSIS OF MULTIPLE PESTICIDE RESIDUES IN FOOD CROPS - (Peer Reviewed Journal)
Mastovska, K., Hajslova, J., Lehotay, S.J. 2004. Ruggedness and other performance characteristics of low-pressure gas chromatography-mass spectrometry for the fast analysis of multiple pesticide residues in food crops. Journal of Chromatography A. 1054. 2004. p. 335-349.
QUICK, EASY, CHEAP, EFFECTIVE, RUGGED AND SAFE (QUECHERS) APPROACH FOR DETERMINING PESTICIDE RESIDUES - (Book / Chapter)
Lehotay, S.J. 2005 QUICK, EASY, CHEAP, EFFECTIVE, RUGGED AND SAFE (QUECHERS) APPROACH FOR DETERMINING PESTICIDE RESIDUES. METHODS IN BIOTECHNOLOGY. PESTICIDE PROTOCOLS. (19):239-261.
DETERMINATION OF PESTICIDE RESIDUES - (Book / Chapter)
Lehotay, S.J., Mastovska, K. Determination of pesticide residues. Methods of Analysis of Food Components and Additives. Taylor & Francis, Boca Raton, FL. 2005. pp. 329-359.
EVALUATION OF COMMON ORGANIC SOLVENTS FOR GAS CHROMATOGRAPHIC ANALYSIS AND STABILITY OF MULTICLASS PESTICIDE RESIDUES - (Peer Reviewed Journal)
Lehotay, S.J., Mastovska, K. Evaluation of common organic solvents for gas chromatographic analysis and stability of multiclass pesticide residues. Journal of Chromatography A. 2004 p. 259-272.
EVALUATION OF COMMON ORGANIC SOLVENTS FOR GAS CHROMATOGRAPHIC ANALYSIS AND STABILITY OF MULTICLASS PESTICIDE RESIDUES - (Abstract Only)
Mastovska, K., Lehotay, S.J. 2004. Evaluation of common organic solvents for gas chromatographic analysis and stability of multiclass pesticide residues. Meeting Abstract.
A RAPID FLUORESCENCE SCREENING ASSAY FOR TETRACYCLINES IN CHICKEN MUSCLE - (Peer Reviewed Journal)
Schneider, M.J., Lehotay, S.J. 2004. A rapid fluorescence screening assay for tetracyclines in chicken muscle. Journal of Association of Official Analytical Chemists International.
EUROPIUM-SENSITIZED LUMINESCENCE DETERMINATION OF OXYTETRACYCLINE IN CATFISH MUSCLE - (Peer Reviewed Journal)
Chen, G., Schneider, M.J., Darwish, A.M., Lehotay, S.J., Freeman, D.W. 2004. Europium-sensitized luminescence determination of oxytetracycline in catfish muscle. Talanta. 64. pp. 252-257.
EVALUATION OF ANALYTE PROTECTANTS TO IMPROVE GAS CHROMATOGRAPHIC ANALYSIS OF PESTICIDES - (Peer Reviewed Journal)
ANASTASSIADES, M., MASTOVSKA, K., LEHOTAY, S.J. EVALUATION OF ANALYTE PROTECTANTS TO IMPROVE GAS CHROMATOGRAPHIC ANALYSIS OF PESTICIDES. JOURNAL OF CHROMATOGRAPHY A. v. 1015. p. 163-184. 2003.
APPLICATION OF ANALYTE PROTECTANTS TO IMPROVE ACCURACY AND RUGGEDNESS OF ROUTINE GC-MS ANALYSIS OF MULTIPLE PESTICIDE RESIDUES IN FOOD MATRICES - (Abstract Only)
Mastovska, K., Lehotay, S.J., Anastassiades, M. 2004. Application of analyte protectants to improve accuracy and ruggedness of routine gc-ms analysis of multiple pesticide residues in food matrices. Meeting Abstract.
APPLICATION OF GAS CHROMATOGRAPHY IN FOOD ANALYSIS - (Review Article)
LEHOTAY, S.J., HAJSLOVA, J. APPLICATION OF GAS CHROMATOGRAPHY IN FOOD ANALYSIS. TRENDS IN ANALYTICAL CHEMISTRY. v. 21. # 9-10.
APPROACHES AND RECOMMENDATIONS TO VALIDATE MS CONFIRMATION CRITERIA FOR VETERINARY DRUG RESIDUES IN FOOD - (Abstract Only)
LEHOTAY, S.J., SCHNEIDER, M.J., FAGERQUIST, C.K., LIGHTFIELD, A.R. APPROACHES AND RECOMMENDATIONS TO VALIDATE MS CONFIRMATION CRITERIA FOR VETERINARY DRUG RESIDUES IN FOOD. 116TH AOAC INTERNATIONAL ANNUAL MEETING. ABSTRACT. 2002. P. 80.
VOLATILE SULFUR COMPOUNDS IN IRRADIATED PRE-COOKED TURKEY BREAST ANALYZED WITH PULSED FLAME PHOTOMETRIC DETECTION - (Peer Reviewed Journal)
FAN, X., SOMMERS, C.H., THAYER, D.W., LEHOTAY, S.J. VOLATILE SULFUR COMPOUNDS IN IRRADIATED PRE-COOKED TURKEY BREAST ANALYZED WITH PULSED FLAME PHOTOMETRIC DETECTION. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY. 2002. V. 50. P. 4257-4261.
INVESTIGATING THE IMPACTS OF AGRO-CHEMICALS ON OYSTERS AND WATER IN TRIBUTARIES OF THE CHESAPEAKE BAY - (Abstract Only)
THE FATE OF CURRENTLY USED PESTICIDES IN TWO CHESAPEAKE BAY TRIBUTARIES - (Abstract Only)
DEVELOPMENT OF ANALYTICAL METHODS FOR MULTIPLE PESTICIDES IN OYSTER, SEDIMENT, AND RIVER WATER - (Abstract Only)
MEETING CHALLENGES IN THE DEVELOPMENT OF ANALYTICAL METHODS FOR PESTICIDE RESIDUES IN FRUITS AND VEGETABLES. - (Abstract Only)
WHY ARE OLD METHODS HANGING AROUND? - (Trade Journal)