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United States Department of Agriculture

Agricultural Research Service

Related Topics

Alan R Lightfield
Residue Chemistry and Predictive Microbiology Research
Chemist

Phone: (215) 233-6768
Fax: (215) 233-6442

Room 1127
600 E MERMAID LN
ERRC
WYNDMOOR , PA 190388598


Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
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 -
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.
Validation of a streamlined multiclass, multiresidue method for determination of veterinary drug residues in bovine muscle by liquid chromatography-tandem mass spectrometry Reprint Icon -
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.
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 -
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.
Rapid analysis of aminoglycoside antibiotics in bovine tissues using disposable pipette extraction and ultrahigh performance liquid chromatography - tandem mass spectrometry Reprint Icon -
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.
Hot study: Investigating the risk for violative meat residues in bob veal calves fed colostrum from cows treated at dry-off with cephapirin benzathine -
Hausler, K., Godden, S.M., Schneider, M.J., Lightfield, A.R., Bulthaus, M., Haines, D. 2013. Hot study: Investigating the risk for violative meat residues in bob veal calves fed colostrum from cows treated at dry-off with cephapirin benzathine. Journal of Dairy Science. 96(4):2349-2355.
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 -
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.
Evaluation of a multiclass, multiresidue liquid chromatography-tandem mass spectrometry method for analysis of 120 veterinary drugs in bovine kidney -
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 -
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 -
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.
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 -
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.
Comparison of screening methods for antibiotics in beef kidney juice and serum -
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.
New Method for the Analysis of Flukicide and Other Anthelmintic Residues in Bovine Milk and Liver using LC-MS/MS -
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.
Streamlining methodology for the multiresidue analysis of beta-lactam antibiotics in bovine kidney using liquid chromatography-tandem mass spectrometry -
Mastovska, K., Lightfield, A.R. 2008. Streamlining methodology for the multiresidue analysis of beta-lactam antibiotics in bovine kidney using liquid chromatography-tandem mass spectrometry. Journal of Chromatography A. 1202:118-123.
Reversed phase and aqueous normal phase retention in multiclass LC-MS analysis of antibiotics -
Mastovska, K., Lightfield, A.R. 2008. Reversed phase and aqueous normal phase retention in multiclass LC-MS analysis of antibiotics. American Laboratory.
New Method for Analysis of Multiple Anthelmintic Residues in Animal Tissue -
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 -
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.
CONFIRMATORY AND QUANTITATIVE ANALYSIS OF B-LACTAM ANTIBIOTICS IN BOVINE KIDNEY TISSUE BY DISPERSIVE SOLID-PHASE EXTRACTION AND LIQUID CHROMATOGRAPHY-TANDEM MASS SPECTROMETRY -
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.
USE OF BUFFERING TO IMPROVE RESULTS OF PROBLEMATIC PESTICIDES IN A FAST AND EASY METHOD FOR RESIDUE ANALYSIS OF FRUITS AND VEGETABLES -
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.
ANALYSIS FOR B-LACTAM ANTIBIOTICS IN KIDNEY TISSUE BY LIQUID CHROMATOGRAPHY WITH ELECTROSPRAY IONIZATION AND SELECTIVE REACTION MONITORING/TANDEM ION TRAP MASS SPECTROMETRY -
FAGERQUIST, C.K., LIGHTFIELD, A.R. ANALYSIS FOR B-LACTAM ANTIBIOTICS IN KIDNEY TISSUE BY LIQUID CHROMATOGRAPHY WITH ELECTROSPRAY IONIZATION AND SELECTIVE REACTION MONITORING/TANDEM ION TRAP MASS SPECTROMETRY. RAPID COMMUNICATIONS IN MASS SPECTROMETRY. 2003.
APPROACHES AND RECOMMENDATIONS TO VALIDATE MS CONFIRMATION CRITERIA FOR VETERINARY DRUG RESIDUES IN FOOD -
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.
AN SPE COLUMN/TEFLON SLEEVE ASSEMBLY FOR THE IN-LINE RETENTION DURING SUPERCRITICAL FLUID EXTRACTION OF TRACE LEVEL ANALITIES FROM BIOLOGICAL MATRICES -
Last Modified: 5/2/2016
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