我国生活饮用水中铅、砷检测能力验证分析

Analysis of proficiency testing for detecting lead and arsenic in drinking water

分析2012年由中国测试技术研究院承担的国家认监委能力验证项目"CNCA-12-A08生活饮用水中重金属及无机阴离子的检测"中铅、砷的能力验证结果,对生活饮用水中铅、砷检测方法进行比较和探讨。能力验证结果表明:ICP-MS法测定铅和砷的结果满意率最高,测定结果中位值及平均值与理论值最为接近。

The result of the proficiency testing（PT） of lead and arsenic which was part of the work of the project ＂CNCA-12-A08 Determination of heavy metals and inorganic anions in drinking water＂ was analyzed. This project was organized by the certification and accreditation administration of the people’s republic of China（CNCA） and undertaken by the National Institute of Measurement Testing Technology in 2012. The different methods used in the PT were compared.The results of PT showed that the ICP-MS was the optimal method to determine lead and arsenic in drinking water for the highest satisfaction rate,and that the median value and the mean value were most close to the theoretical value.