土壤中有机磷农药分析过程中不确定度的来源及评定

Evaluation of Uncertainty in Organic Pollutants Analysis

土壤中有机磷农药分析过程中的不确定度主要来源于样品采集、运输和保存、前处理及分析这四个环节。以土壤中马拉硫磷的测定为例,分别评定了各个环节产生不确定度的大小。结果表明,样品前处理产生的不确定度对总不确定度的贡献最大。

There were four necessary steps in phosphorus pesticides analysis of contaminated soils,which is： sampling,transportation and preservation,preparation and analysis.The sources of uncertainty in the entire course of the determination s malathion in soil were evaluated.The predominant uncertainty was from sample preparation.