全国实验室生活饮用水中三氯甲烷的测定能力验证研究

发布时间：2018-03-17 09:17

本文选题：能力验证　切入点：三氯甲烷　出处：《环境与健康杂志》2016年12期 　论文类型：期刊论文

【摘要】：目的通过能力验证计划,对全国实验室的生活饮用水中三氯甲烷含量检测能力进行分析和评价。方法能力验证计划中使用的被测样品参考二级标准物质制备方法制备,采用单因子方差分析法和t检验法分别对其进行均匀性检验和稳定性检验。将全国多个行业系统所属的329家实验室提交的结果进行迭代稳健统计分析,采用z比分数评定各参加实验室的测试结果。结果获得满意结果的实验室299家,结果满意率为90.9%;可疑结果的有14家,结果可疑率为4.3%;离群结果的有16家,结果离群率为4.9%。结论能力验证统计结果表明,国内实验室的生活饮用水中三氯甲烷检测能力总体较好,少部分实验室的检测能力有待改进提高。
[Abstract]:Objective to analyze and evaluate the ability of testing the content of trichloromethane in drinking water in national laboratories through the capability verification program. Single factor variance analysis method and t test method are used to test their homogeneity and stability respectively. The results submitted by 329 laboratories belonging to many industry systems in China are analyzed by iterative robust statistical analysis. The results of the tests in each laboratory were evaluated by z ratio score. The satisfaction rate of the results of 299 laboratories with satisfactory results was 90.9, 14 with suspicious results and 4.3 with suspicious results, and 16 with outlier results. Results the outlier rate was 4.9. Conclusion the statistical results of ability verification show that the detection capacity of trichloromethane in drinking water in domestic laboratories is good in general, and that in a few laboratories the detection capacity needs to be improved.
【作者单位】：中国疾病预防控制中心环境与健康相关产品安全所;
【基金】：国家认监委2014年A类能力验证计划项目(CNCA-14-A05)
【分类号】：R123.1

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