摘要
本文研究了分散固体萃取方法快速测定蔬菜水果中的25种农药残留的方法。采用一种新的样品前处理技术,用0.1%冰乙酸乙腈溶液从蔬菜水果中提取净化25种农药残留,运用GC/MS进行分析。用内标法定量,加标浓度分别为0.01、0.05、0.1μg/mg时,回收率在75.06～108.26%之间,相对偏差不>10%。方法检出下限为0.01～0.05μg/mg,用该方法可实现对蔬菜水果中农药残留的检测。
An analytic method was developed for determination of 25 Herbicides in Vegetable and Fruits by QuEchERS.It adopts a new pretreatment technology,and abstract 25 pesticides from vegetable and fruits with Acetonitrile contain 0.1% acetic acid,then analysis by GC-MS.It was quantified by the internal standard method.When pesticides in sample at the concentrations of 0.05,0.1,1.0μg/mg,the recoveries were in the range of 75.06～108.26 %.The limits of detection were in the range of 0.01～0.05μg/mg.It was confirmed that the proposed method can be applied in Vegetables and Fruits analysis.
出处
《农药科学与管理》
CAS
2011年第11期35-39,共5页
Pesticide Science and Administration
