Characterization of 14C Terminal Residues in Rice Plants Treated with 14C Ring-Labeled Benthiocarb

除草劑農藥殺丹(Benthiocarb)在水稻植物中最終產物之分離鑑定

鄭弘命(Hong-Ming Cheng) ； 黃登福(Deng-Fwu Hwang)

《藥物食品分析》 2卷2期 (1994/06) Pp. 103-112

摘要

The terminal 14C residues in rice treated with 14C ring-labeled benthiocarb were characterized. Rice was treated at 5 1b/acre, then grown to maturity. Straw and grain were harvested and analyzed for 14C. The total 14C in the straw and the grain was 2.0 and 0.3 ppm, respectively, calculated as benthiocarb. No (less than 0.01 ppm) parent compound or metabolites containing the intact thiocarbamate moiety were found in either the straw or the grain. Approximately 0.25 ppm 4-chlorobenzoic acid (0.41 ppm 14C calculated as benthiocarb) was isolated from straw as bound, conjugated and/or free metabolites. Two other major 14C metabolites (0.33 ppm), both containing carboxylic acid and the 4-chlorobenzylthio moieties in the molecules, were partially identified. Approximately 0.02 ppm 4-chlorobenzyl methyl sulfone was found in the grain.

並列摘要

The terminal 14C residues in rice treated with 14C ring-labeled benthiocarb were characterized. Rice was treated at 5 1b/acre, then grown to maturity. Straw and grain were harvested and analyzed for 14C. The total 14C in the straw and the grain was 2.0 and 0.3 ppm, respectively, calculated as benthiocarb. No (less than 0.01 ppm) parent compound or metabolites containing the intact thiocarbamate moiety were found in either the straw or the grain. Approximately 0.25 ppm 4-chlorobenzoic acid (0.41 ppm 14C calculated as benthiocarb) was isolated from straw as bound, conjugated and/or free metabolites. Two other major 14C metabolites (0.33 ppm), both containing carboxylic acid and the 4-chlorobenzylthio moieties in the molecules, were partially identified. Approximately 0.02 ppm 4-chlorobenzyl methyl sulfone was found in the grain.

並列關鍵字

Thiocarbamate herbicide ； Degradation products of benthiocarb