职业卫生技术服务机构工作场所空气采样和检测实验室间比对

发布时间：2018-12-14 03:57

【摘要】：目的通过实验室间比对分析职业卫生技术服务机构工作场所空气采样和检测结果的准确性。方法采用对模拟工作场所空气采样流量和样品检测结果进行评定相结合的方法,对广东省58家职业卫生技术服务机构(以下简称"参比机构")进行工作场所空气中正己烷、甲苯和1,2-二氯乙烷采样和检测的实验室间比对。对采样器流量核查和样品检测结果的合格情况进行评价。结果 58家参比机构共有122台采样器参加采样器流量核查比对,机构合格率为82.8%(48/58),采样器合格率为86.9%(106/122);进口品牌采样器流量核查合格率高于国产品牌(98.1%vs 78.3%,P0.01)。共有54家参比机构提交146项样品检测结果,样品检测合格率为81.5%(119/146);其中正己烷、甲苯和1,2-二氯乙烷检测结果的合格率分别为78.0%(39/50)、85.2%(46/54)和81.0%(34/42)。珠江三角洲地区和非珠江三角洲地区参比机构采样器流量核查合格率和样品检测合格率差异均无统计学意义(87.2%vs 86.1%,80.4%vs 84.6%,P0.05);市级、区级和县(镇)级参比机构采样器流量核查合格率和样品检测合格率差异均无统计学意义(86.4%vs 87.1%vs 87.5%,86.4%vs 80.0%vs 70.6%,P0.05);民营参比机构样品检测合格率低于疾病预防控制类机构和职业病防治类参比机构(27.3%vs 85.7%,27.3%vs 86.5%,P0.01),但该3种参比机构采样器流量核查合格率差异均无统计学意义(100.0%vs 86.0%vs 85.7%,P0.05)。结论职业卫生技术服务机构工作场所空气采样流量和样品检测结果仍然存在准确性差的问题;开展工作场所空气采样和检测实验室间比对有利于提高有关机构技术服务能力。
[Abstract]:Objective to analyze the accuracy of workplace air sampling and detection in occupational health technical service institutions by laboratory comparison. Methods 58 occupational health technical service institutions in Guangdong Province were evaluated for n-hexane in workplace air by using the method of evaluating the air sampling flow rate in simulated workplace and the results of sample detection. Interlaboratory comparison of toluene and 2-dichloroethane sampling and detection. The quality of flow check and sample test results of sampler is evaluated. Results there were 122 samplers in 58 reference organizations to check and compare the flow rate of the sampler. The qualified rate of the mechanism was 82.8% (48 / 58) and the qualified rate of the sampler was 86.9% (106 / 122). The qualified rate of flow check of imported brand sampler was higher than that of domestic brand (98.1%vs 78.3% P0.01). A total of 54 reference agencies submitted 146 test results, and the qualified rate of sample detection was 81.5% (119 / 146). The qualified rates of n-hexane, toluene and 1-dichloroethane were 78.0% (39 / 50), 85.2% (46 / 54) and 81.0% (34 / 42), respectively. There was no significant difference in the qualified rate of flow rate of sampler and the qualified rate of sample detection between the Pearl River Delta region and the non-Pearl River Delta region (87.2%vs 86.1 / 80.4vs 84.60.45). There was no significant difference in flow rate of sampler and qualified rate of sample detection between city, district and county (town) level (86.4%vs 87.1%vs 87.564 vs 80.0%vs 70.6). P0.05); The qualified rate of private reference institutions was lower than that of disease prevention and control institutions and occupational disease prevention and control institutions (27.3%vs 85.727.3 vs 86.5 P0.01). However, there was no significant difference in the qualified rate of flow verification among the three reference mechanism samplers (100.0%vs 86.0%vs 85.7 P 0.05). Conclusion there are still some problems in the air sampling flow rate and sample detection results in the workplace of occupational health technical service organizations, and it is helpful to improve the technical service ability of the relevant institutions by carrying out air sampling and testing laboratory comparison in the workplace.
【作者单位】：广东省职业病防治院广东省职业病防治重点实验室;
【基金】：广东省职业病防治重点实验室(2012A061400007)
【分类号】：R134.4

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