加工对豇豆果实中氯虫苯甲酰胺残留减少的持久性和效果。
Persistence and effects of processing on reduction of chlorantraniliprole residues on cowpea fruits.
机构信息
Department of Agricultural Entomology, College of Agriculture, Kerala Agricultural University, Vellayani P.O., Thiruvananthapuram, 695522, Kerala, India.
出版信息
Bull Environ Contam Toxicol. 2013 Apr;90(4):494-8. doi: 10.1007/s00128-012-0944-9. Epub 2013 Jan 3.
A field trial was conducted to study the dissipation kinetics of chlorantraniliprole 18.5 % SC on cowpea fruits. The fruit samples drawn periodically were analyzed by liquid chromatography and tandem mass detection (LC-MS/MS). The initial residues of chlorantraniliprole in cowpea fruits were found to be 0.55 mg kg(-1) which dissipated rapidly, with a half-life of 1.31 days and a waiting period of 0.62 days following first order kinetics. Processing of the fruits with solutions commonly used in households reduced the insecticide residues on cowpea fruits harvested 2 h after spraying by 47.19 %-91.70 % and 44.56 %-91.25 % on fruits plucked on the third day.
开展田间试验研究氯虫苯甲酰胺 18.5%悬浮剂在豇豆果实上的消解动态。定期采集的果实样品经液相色谱-串联质谱法（LC-MS/MS）检测分析。结果表明，氯虫苯甲酰胺在豇豆果实中的初始残留量为 0.55mg/kg，消解较快，遵循一级动力学方程，半衰期为 1.31 天，安全间隔期为 0.62 天。家庭常用处理液处理豇豆果实，施药后 2 h 收获的豇豆果实上的杀虫剂残留量降低 47.19%-91.70%，施药后 3 d 采摘的果实残留量降低 44.56%-91.25%。
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