Analysis of disulfoton metabolites in crops with GC-FPD and GC/MS
1999
Tanaka, Y. (Yokohama-shi. Inst. of Health (Japan)) | Sasao, T. | Kirigaya, T. | Hosoi, S. | Kawamura, T. | Nakazawa, H.
Two unknown peaks were detected on the chromatogram of turnip greens extract by GC-FPD. These unknown peaks were identified as dimetonthiol sulfone and disulfoton sulfone, which are metabolites of disulfoton, by GC/MS. As a result of investigation of 300 samples of crops, dimetonthiol sulfone was detected in the range of 0.22-1.6 mug/g and disulfoton sulfone was detected in the range of 0.002-0.54 mug/g in turnip, turnip greens and cauliflower. The recoveries of disulfoton and its metabolites fortified at the levels of 1.0 mug/g and 10.0 mug/g were more than 90 %. The detection limit of dimetonthiol sulfone was 0.01 mug/g and those of disulfoton and disulfoton sulfone were 0.001 mug/g
اظهر المزيد [+] اقل [-]