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[目的]了解个体采样与定点采样两种方法对检测空气中铅时间加权平均浓度的影响。[方法]使用个体采样与定点采样两种采样方法平行采集工作场所含铅的空气,根据《工作场所空气有毒物质测定.铅及其化合物》(GBZ/T 160.10—2004)方法测定铅时间加权平均浓度,对其结果进行统计学对比分析。[结果]个体采样和定点采样,经在采用全面通风措施的工作岗位的采样结果比较表明,两种采样方法差异无统计学意义;采用局部通风措施的工作岗位的采样结果表明,两种采样方法差异有统计学意义(P<0.05),个体采样的结果高于定点采样。[结论]在局部通风措施的工作场所,不同采样方法对空气中铅检测结果有影响,个体采样所得结果更能反映工人实际暴露水平。
[Objective] To understand the influence of two methods, individual sampling and fixed sampling, on the weighted average concentration of lead in air. [Method] The air samples containing lead in the workplace were collected in parallel using two sampling methods: individual sampling and fixed sampling. The weighted average lead time was determined according to the method of “Determination of lead in air toxic substances in workplace and its compound” (GBZ / T 160.10-2004) Concentration, the results of statistical comparative analysis. [Result] The comparison of the sampling results of the working posts adopting the comprehensive ventilation measures shows that there is no significant difference between the two sampling methods. The sampling results of the work posts adopting the local ventilation measures show that the sampling methods of the two sampling methods The difference was statistically significant (P <0.05), the individual sampling results were higher than the fixed-point sampling. [Conclusion] In the workplace with local ventilation measures, different sampling methods had an impact on the lead detection results in the air, and the individual sampling results could better reflect the workers’ actual exposure level.