饮用水中三溴甲烷检测的能力验证  

Proficiency test for determination of tribromomethane in drinking water

作　　者：曹宁涛 杨姣兰[1] Cao Ningtao;Yang Jiaolan(National Institute of Environmental Health,Chinese Center for Disease Control and Prevention,Beijing 100021,China)

机构地区：[1]中国疾病预防控制中心环境与健康相关产品安全所

出　　处：《卫生研究》2019年第5期843-846,共4页Journal of Hygiene Research

基　　金：国家认监委2018年能力验证A类计划(No.CNCA-18-A08)

摘　　要：目的通过能力验证计划,对全国实验室饮用水中三溴甲烷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线性拟合趋势分析法分别对其进行均匀性检验和稳定性检验。将各参加实验室提交的结果进行迭代稳健统计分析,采用Z值评定各参加实验室的检测结果。结果全国共352家实验室参加该项能力验证计划项目,获得满意结果的实验室317家,结果满意率为90. 0%,可疑结果的有14家,结果可疑率为4. 0%,离群结果的有21家,结果离群率为6. 0%。结论国内实验室饮用水中三溴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。OBJECTIVE To evaluate the capacity of national laboratories for determination of tribromomethane in drinking water using proficiency testing program.METHODS The preparation method of the secondary standard materials were used as the reference for the sample preparation in this proficiency testing program. The homogeneity and stability of the samples were tested by single factor analysis of variance( ANOVA) and linear regression. The results provided by participant laboratories were analyzed by robust statistics and assessed using the Z-score. RESULTS A total of 352 laboratories throughout the country participated in the proficiency testing program. 317 laboratories,or 90. 0% of total participating laboratories,obtained satisfactory results.Results provided by 14 laboratories,or 4. 0% of total participating laboratories,were found to suggest doubts in their capacities. Finally, there were 21 laboratories,constituting 6. 0% of total participating laboratories,with results that were found to be outliers. CONCLUSION The capacity of national laboratories for determination of tribromomethane in drinking water has been ranked as satisfactory according to statistical analysis of the proficiency testing program results. Only a small portion of the participants require further improvement in their capacities.

关 键 词：饮用水 三溴甲烷 能力验证 给水卫生 水质检测 

分 类 号：R123.5[医药卫生—环境卫生学]