2010•Unpublished venueRequires access
Study of Imidaclothiz Residues in Cabbage and Soil by HPLC with UV Detection
Ming Yao, Baojiang DaiYitong Lu
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Abstract
The HPLC method for determination of imi- daclothiz residue in cabbage and soil was developed, and its degradation and final residue were studied. The mean accuracies of the analytical method were 92.0-93.0% in soil and 88-93% in cabbage. The precision in cabbage ranged from 2.2% to 5.6%, and in soil from 2.0% to 5.0%. The minimum detectable amount of imidacothiz was 1 9 10 -10 g. The minimum detectable concentration was 0.0075 mg kg -1 in cabbage and 0.003 mg kg -1 in soil. The results showed that imidaclothiz degradation in soil and cabbage coincided with C = 0.0427e -0.0923t ,C = 0.739e -0.279t . The half-lives were about 3.1 days in soil and 2.2 days in cabbage.