安徽农业科学2017，Vol.45Issue(23)：128-130,143,4.
烟叶及土壤中砜嘧磺隆农药残留及消解动态研究
Residue and Dynamic Degradation of Rimsulfuron in Tobacco Leaf and Soil
徐金丽 1王秀国 1徐光军 1郑晓 1孙惠青 1李义强1
作者信息
- 1. 中国农业科学院烟草研究所国家烟草专卖局病虫害监控与综合治理重点实验室,山东青岛266101
- 折叠
摘要
Abstract
[Objective] The aim was to study the residual behavior and dissipation of rimsulfuron in tobacco and soil.[Method] The sample collected from the field experiment were extracted by acetonitrile,and cleaned up by dispersive solid phase extraction using N-propyl ethylenediamine (PSA) as adsorbent,and detected by HPLC-MS/MS.[Result] The average recoveries of rimsulfuron at the level of 0.005-0.500 mg/kg in fresh tobacco leaf and soil were 84.1％-95.8％ and 90.0％-94.2％;the relative standard deviation (RSD) were 3.2％-6.4％ and 3.6％-7.3％,respectively;and the quantitative limit (LOQ) was 0.005 mg/kg.The average recovery of rimsulfuron at the level of 0.010-0.500 mg/kg in cured tobacco leaf was 87.1％-90.1％;the RSD was 2.0％-8.9％;and the quantitative limit (LOQ) was 0.010 mg/kg.The initial deposition of rimsulfuron in fresh tobacco leaf was ＜0.005-0.041 mg/kg,and was ＜0.005-0.510 mg/kg in soil.The half-life of rimsulfuron in soil was 1.4-2.9 days,and the final residue in cured tobacco leaves was below 0.010 mg/kg after the application of rimsulfuron for 7 days.[Conclusion] It is reconmmended to rimsulfuron applied at the stage of transplant to prevent weeds in tobacco fields with the dose of 18-21 gammer per hectare (active ingredients).The safe intervals is 70 days.关键词
烟叶/土壤/砜嘧磺隆/残留Key words
Tobacco leaf/Soil/Rimsulfuron/Residue分类
农业科技引用本文复制引用
徐金丽,王秀国,徐光军,郑晓,孙惠青,李义强..烟叶及土壤中砜嘧磺隆农药残留及消解动态研究[J].安徽农业科学,2017,45(23):128-130,143,4.
