蔬菜中农药残留测定的测量不确定度评定  

Measurement Uncertainty Evaluation of Determination Pesticide Residues in Vegetables

作　　者：王璐[1] 贺泽英[1] 罗铭[1] 彭袆[1] 

机构地区：[1]农业部环境保护科研监测所,天津300191

出　　处：《安徽农业科学》2015年第3期113-115,119,共4页Journal of Anhui Agricultural Sciences

摘　　要：[目的]评定蔬菜中农药残留检测最常用的标准方法之一——NY/T 761方法的测量不确定度。[方法]以NY/T 761-2008标准方法为研究对象,选择甲胺磷、甲氰菊酯和甲萘威分别代表方法的3个部分,从样品前处理过程、仪器测定分析和标准溶液配制等几方面对检测方法的测量不确定度进行了评估。[结果]方法 3个部分的相对扩展不确定度分别为5.70%、5.66%和6.30%(k=2),其中色谱仪的测量重复性偏差和标准溶液配制引入的不确定度分量是主要来源。[结论]为客观评价蔬菜中农药残留检测结果提供了参考。[Objective]The aim was to evaluate the measurement uncertainty of NY / T 761 method for determining pesticide residues in vegetables. [Method] With the standard method of NY / T 761-2008 as the research objects,methamidophos,fenpropathrin and carbaryl that represent the three parts of method were selected,and the measurement uncertainty of the determination method was evaluated from the sample pretreatment process,instrument measuring analysis and standard solution preparation and other aspects. [Result] The relative expanded uncertainty of three parts of method respectively were 5. 70%,5. 66% and 6. 30%（ k = 2）,which mainly come from the measurement repeatability error of chromatograph and the standard solution preparation introduced uncertainty components. [Conclusion] The results provide reference for objective evaluating the detection results of pesticide residues in vegetables.

关 键 词：测量不确定度 农药残留 检测方法 

分 类 号：S481.8[农业科学—农药学]