土壤和葵花籽中精异丙甲草胺的残留分析  

Residue Analysis Method of S-Metolachlor in Sunflower Seed and Soil

作　　者：贺敏[1] 贾春虹[1] 余平中[1] 陈莉 朱晓丹[1] 赵尔成[1] 

机构地区：[1]北京市农林科学院植物保护环境保护研究所,北京100097

出　　处：《农药》2009年第12期902-903,共2页Agrochemicals

基　　金：农业部农药检定所农药残留试验项目(2008F002)

摘　　要：样品经正己烷提取,弗罗里硅土固相萃取小柱净化,气相色谱仪检测。对葵花籽和土壤中的精异丙甲草胺进行不同水平的添加回收率测定,方法的回收率为85.46%～97.76%,变异系数为0.87%～7.81%。精异丙甲草胺的最小检知量为1×10-11g,它在土壤、植株、葵花籽上的最低检出质量分数为0.01mg/kg。A determination method of S-metolachlor residue was established by GC equipped with ECD detector. The sample was extracted by n-hexane, cleaned by florisil-SPE column. The average recoveries of the method ranged from 85.46-97.76%, and the coefficient of variation was 0.87-7.81%. The minimum detectable concentration of S-metolachlor was 1×10^-11 g. The lowest detectable concentration of soil, plant and sunflower seed were 0.01 mg/kg, respectively.

关 键 词：精异丙甲草胺 葵花籽 气相色谱法 残留 

分 类 号：TQ450.263[化学工程—农药化工]