水稻中氯噻啉的高效液相色谱残留分析方法  

Residue Analysis of Imidaclothiz in Rice by HPLC

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4期285-286,288,共3页Agrochemicals

基　　金：农业部农药检定所农药残留试验项目(NC-BJNKY-14)

摘　　要：样品经二氯甲烷提取,弗罗里硅土与活性炭混合层析柱净化,高效液相色谱仪分离,紫外270nm检测。对水稻和环境中的氯噻啉进行不同水平的添加回收率实验,方法的回收率为89.27%￣98.11%,变异系数为0.55%￣3.64%。氯噻啉的最小检知量为0.2ng,氯噻啉在稻田水中的最低检出质量浓度为0.0004mg/L。氯噻啉在土壤、植株、谷壳、稻米中的最低检出质量分数分别为0.005、0.01、0.02、0.005mg/kg。The sample was extracted by dichloromethane, cleaned by mixed florisil and activated cabon column. The target ingredient was separated by HPLC and detected by PAD detector at 270 nm. The average recoveries were 89.27-98.11%, and the coefficient of variation was 0.55-3.64%. The minimum detectable quantity of imidaclothiz was 0.2 ng. The lowest detectable concentration of field water, soil, straw, rice shell and hulled rice samples were 0.0004 mg/L, 0.005, 0.01, 0.02, 0.005 mg/kg, respectively.

关 键 词：氯噻啉 水稻 高效液相色谱法 残留 

分 类 号：TQ450.263[化学工程—农药化工]