大气可吸入颗粒物中铅含量的测定

发布时间：2018-06-25 00:55

本文选题：石墨炉-原子吸收光谱仪 + 铅　；参考：《北京理工大学》2015年硕士论文

【摘要】：大气可吸入颗粒物是目前空气质量的重要评价指标之一,也是环境污染的重要参考依据。而铅元素具有毒性,可致癌、致畸性、致突变等,乙基铅曾经作为汽油的抗爆剂而被广泛使用,因此广泛被人所关注,可吸入颗粒物中的铅含量可以反映大气的重金属污染情况。本文采用PM2.5切割器,使用石英纤维滤膜,采集了一个月的样品,使用石墨炉-原子吸收光谱仪,分析了其中的铅含量。在0-40μg/L溶液浓度范围内,线性良好,线性回归系数达到0.9998,且检出限0.2μg/L,满足大气可吸入颗粒物中铅含量的测定需求。
[Abstract]:Atmospheric respirable particulate matter is one of the important evaluation indexes of air quality at present, and it is also an important reference basis for environmental pollution. Lead is toxic, carcinogenic, teratogenic, mutagenic, and so on. Ethyl lead has been widely used as an antiknock agent for gasoline, so it has been widely concerned. Lead content in inhalable particulates can reflect heavy metal pollution in the atmosphere. In this paper, PM2.5 cutter and quartz fiber filter membrane were used to collect samples for one month. The lead content was analyzed by graphite furnace atomic absorption spectrometer. In the range of 0-40 渭 g / L solution concentration, the linearity is good, the linear regression coefficient is 0.9998, and the detection limit is 0.2 渭 g / L, which meets the requirement for the determination of lead content in atmospheric respirable particulates.
【学位授予单位】：北京理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X831

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