职业卫生检测实验室2013-2017年室间比对结果分析

Result analysis on inter-laboratory comparison among occupational hygiene labs,2013-2017

目的分析职业卫生检测实验室的实验室间比对结果。方法采用方便抽样方法,选择2013-2017年参加广东省职业卫生检测中心组织的实验室间比对的职业卫生检测实验室(简称"参比实验室")为研究对象,分析其工作场所空气中有机物、金属、无机非金属类,生物材料中金属和粉尘中游离二氧化硅水平的检测结果,采用四分稳健统计技术评价检测结果。结果2013-2017年共有参比实验室615家(次),参加比对项目共2785项,2484项结果合格,合格率为89.2%。工作场所空气中的有机物、金属、无机非金属类,生物材料中金属、粉尘中游离二氧化硅水平检测合格率分别为91.1%、92.0%、86.6%、80.4%、85.0%。不同地区参比实验室比对项目合格率从高到低依次为:广东省内珠江三角洲地区、广东省内非珠江三角洲地区、广东省外地区,合格率依次为91.6%、87.2%、72.6%(P<0.01)。公立性质参比实验室比对项目合格率高于民营性质参比实验室(90.3%vs 87.0%,P<0.05)。结论参比实验室的职业病危害因素检测的准确性有待提高;应进一步加强对省内非珠江三角洲地区和民营实验室的投入与监督管理。

Objective To analyze the results of inter-laboratory comparison among occupational hygiene laboratories.Methods A convenient sampling method was used.The laboratories participating in the inter-laboratory comparison organized by the Guangdong Occupational Health Test Center from 2013 to 2017 were selected as study subjects.The data of detection of organic compounds,metal element,inorganic non-metal element in workplace air,detection of metal element in biological materials,and detection of free silica in dust were analyzed.The results were statistically analyzed by four-point robust statistical technique.Results A total of 615 laboratories(times)participated in the comparison,and 2785 items of sample detection results were submitted from 2013 to 2017.Among them,a total of 2484 items were tested qualified and the sample test qualified rate was 89.2%.The test qualified rates of organics in workplace air,metals in workplace air,inorganic nonmetals in workplace air,metals in biological materials and free silica in dust were 91.1%,92.0%,86.6%,80.4%and 85.0%,respectively.The sample test qualified rates of the laboratories in different regions from high to low were:the laboratories Pearl River Delta region in Guangdong Province,the laboratories in non-pearl river delta region in Guangdong Province and the laboratories outside of Guangdong Province were 91.6%,87.2%and 72.6%(P<0.01),respectively.The sample test qualified rate of the public laboratories was higher than that of the private laboratories(90.3%vs 87.0%,P<0.05).Conclusion The accuracy of the occupational hazard factor test in the participating laboratories needs to be improved.It is necessary to further strengthen the investment,supervision and management to non-pearl river delta region laboratories and private laboratories in Guangdong Province.