广西土壤中重金属能力验证结果与分析

Validation results and analysis of heavy metal capacity in soil of Guangxi

通过能力验证评价广西实验室土壤中砷、铜、锌、铅、镉、铬、汞、锰、镍等9种重金属的检测能力。本次能力验证分割水平样品设计,采用稳健统计方法对实验室检测能力进行评价。结果表明:共66个实验室参加本次能力验证,结果满意率分别为砷81.8%、铜85.7%、锌82.5%、铅87.9%、镉为89.2%、铬为84.4%、汞78.1%、锰84.3%、镍82.1%。与2013年能力验证比较分析,参加实验室总数提高100%,砷、铅、镉、汞满意率提高0.5%~22.5%。广西实验室已较好的具备土壤重金属的检测能力。

Through the ability verification,the detection ability of 9 heavy metals such as As,Cu,Zn,Pb,Cd,Cr,Hg,Mn,Ni in Guangxi laboratory soil was evaluated.In this capacity verification,the split level sample design adopts robust statistical method to evaluate the laboratory detection ability.The results showed that 66 laboratories participated in the test,and the satisfaction rates were As 81.8%,Cu 85.7%,Zn 82.5%,Pb 87.9%,Cd 89.2%,Cr 84.4%,Hg 78.1%,Mn 84.3%and Ni 82.1%,respectively.Compared with the capacity verification in 2013,the total number of participating laboratories increased by 100%,and the satisfaction rate of arsenic,lead,cadmium and mercury increased by 0.5%~22.5%.Guangxi laboratory has a good ability to detect heavy metals in soil.