Location: Commodity Protection and Quality
Project Number: 3060-32000-014-08
Start Date: Jun 01, 2011
End Date: May 31, 2016
Sealable Plexiglas chambers will be constructed to hold produce and a ClO2 generating system. Radioactive ClO2 will be produced by chemical reaction of sodium 36Cl-chlorite in the closed system. Produce will be bathed in 36Cl-ClO2 gas for a fixed duration period. Concentrations of gaseous 36Cl-ClO2 will be measured periodically. At the end of the reaction, radioactive gasses will be collected into chemical traps and exposed produce will be harvested. Harvested fruit will be analyzed for total radioactive residues by radiochemical techniques and the chemical identifies of radioactive metabolites will be identified and quantified by ion chromatography and radiochemical techniques, respectively. Some samples will be rinsed to determine the quantity of surface residues that are removable by water; surface residues will be speciated.