摘要
目的为了了解并提高陕西省各水质检测机构对水中锰检测的整体水平和技术能力。方法选用自制锰能力验证样品,样品的均匀性采用“单因子方差分析”法进行评定;样品的稳定性通过“t检验”法进行评定;采用稳健统计技术“Z比分数”的统计方法对饮用水中锰的检测结果进行分析。结果样品共发放至全省各相关机构136家实验室,锰检测结果(含补测)满意(|Z|≤2)的有129家,满意率为94.85%。结论全省水质检测机构对于生活饮用水中金属元素的测定,表现出较强的检测能力,为居民用水安全提供了有力的保障。
Objective To understand and improve the laboratory detection capacity of water manganese in testing organizations of Shaanxi Province.Methods The self-made manganese capacity testing samples were used as the reference in this proficiency testing program.The homogeneity of the samples was tested by single factor analysis of variance.The t-test method was used to evaluate the stability of the samples.The results of manganese in water provided by participant laboratories were analyzed by the robust statistical technique Z-score.Results A total of 136 laboratories participated in the proficiency testing program throughout the province.Among them,129 laboratories(including retest laboratory)or 94.85%of total participating laboratories obtained satisfactory results.Conclusion The water quality monitoring agencies of our province had shown a strong detection capability for the determination of metal elements in drinking water,which ensures to provide safe water supply to the residents in Shaanxi Province.
作者
刘宇
袁文婷
王彩霞
程国霞
聂晓玲
梁晓聪
李天来
LIU Yu;YUAN Wenting;WANG Caixia;CHENG Guoxia;NIE Xiaoling;LIANG Xiaocong;LI Tianlai(Shaanxi Provincial Centre for Disease Control and Prevention,Xi’an,Shaanxi 710054,China)
出处
《公共卫生与预防医学》
2021年第2期26-29,共4页
Journal of Public Health and Preventive Medicine
关键词
饮用水
锰
能力验证
Z比分数
Drinking water
Manganese
Proficiency test
Z-score
