摘要
目的通过实验室间比对的方法,分析和评价湖南省市、县两级疾病预防控制中心实验室生活饮用水中总硬度的检测能力。方法采用分层随机抽样的方法选取60家疾病预防控制中心实验室作为研究对象,并对其检测能力进行评价;采用稳健统计方法对测定结果进行分析,根据检测能力验证z值对检测结果进行判定,并绘制z值分布图。结果共59家实验室上报检测结果,检测结果为满意值的实验室占77.97%,可疑值占8.47%,离群值占13.56%。市、县两级疾病预防控制中心实验室生活饮用水中总硬度检测能力差异无统计学意义(Z=-0.197,P>0.05)。检测能力验证z值空间分布图显示,湖南省北部和西部z值较大,东部和南部z值较小。结论湖南省疾病预防控制中心实验室生活饮用水中总硬度检测能力基本满足要求,部分实验室的检测能力还有待进一步改善。
Objective Based on inter-laboratory comparison,analyzing and evaluating the ability of detecting total hardness in drinking water at the municipal and county Centers for Disease Controland Prevention in Hunan Province.Methods According to stratified random sampling method,a total of 60 laboratories were selected for capacity verification.The robust statistical method was used to analyze the testing results,and the z-values were verified based on the detection capability to determine the detection results,and a distribution map of z-values was drawn.Results A total of 59 laboratories reported their results,among which 77.97% had satisfactory results,8.47% had suspicious values,13.56% had outliers.There was no statistical significance in the difference between the total hardness of drinking water for municipal and county laboratories(Z=-0.197,P>0.05).The spatial distribution mapof z-values of detecting ability showed that the z-values were larger in the north and west,while the z-values were smaller in the east and south.Conclusions The ability of detecting total hardness in drinking water for laboratories in Hunan province is generally meet the requirements,but some laboratories still need to be further improved.
作者
吕玲双
张杏娥
安宁
周纯良
LU Lingshuang;ZHANG Xing’e;AN Ning;ZHOU Chunliang(Hunan Center for Disease Control and Prevention,Changsha,Hunan 410005,China;不详)
出处
《中国公共卫生管理》
2024年第3期419-421,共3页
Chinese Journal of Public Health Management
关键词
生活饮用水
总硬度
检测能力
湖南
drinking water
total hardness
testing ability
Hunan
