| 贵阳市污染源PM2.5中铂族元素的分布特征 |
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| 引用本文： | 李小成,董娴,柳亚龙,张梦君,陈卓.贵阳市污染源PM2.5中铂族元素的分布特征[J].环境污染与防治,2022,44(2):212-217. |
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| 作者姓名： | 李小成 董娴 柳亚龙 张梦君 陈卓 |
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| 作者单位： | 贵州师范大学化学与材料科学学院,贵州 贵阳 550001,贵州师范大学化学与材料科学学院,贵州 贵阳 550001;贵阳市大气细粒子和大气污染化学重点实验室,贵州 贵阳 550001 |
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| 基金项目： | 国家自然科学基金资助项目(No.21767007);贵州省科学技术基金资助项目(黔科合基础〔2018〕1111);贵州省科技计划项目(黔科合平台人才〔2017〕5726);江苏省机动车尾气污染控制重点实验室开放项目(No.2019-OVEC54)。 |
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| 摘 要： | 为掌握贵阳市污染源PM2.5中铂族元素(PGE)的分布特征,采集7类主要污染源42个PM2.5样品,采用同位素稀释/电感耦合等离子体质谱法定量测定PGE中铂(Pt)、钯(Pd)、铑(Rh)的含量.结果表明:(1)金属冶炼尘PM2.5中Pt、Pd、Rh平均值分别为2186.136、1239.827、346.172 ng/...
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| 关 键 词： | 贵阳市 污染源 PM2.5 铂族元素 分布特征 |
Distribution characteristics of platinum group elements in PM2.5 of pollution sources in Guiyang |
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| LI Xiaocheng,DONG Xian,LIU Yalong,ZHANG Mengjun,CHEN Zhuo.Distribution characteristics of platinum group elements in PM2.5 of pollution sources in Guiyang[J].Environmental Pollution & Control,2022,44(2):212-217. |
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| Authors: | LI Xiaocheng DONG Xian LIU Yalong ZHANG Mengjun CHEN Zhuo |
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| Institution: | (College of Chemistry and Material Science,Guizhou Normal University,Guiyang Guizhou 550001;Key Laboratory of Atmospheric Fine Particles and Air Pollution Chemistry of Guiyang City,Guiyang Guizhou 550001) |
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| Abstract: | In order to reveal distribution characteristics of platinum group elements(PGE)in PM2.5 fraction of different pollution sources in Guiyang,a total of 42 PM2.5 samples of seven major pollution sources were collected,respectively.Three PGE(Pt,Pd,Rh)in the samples were determined by the isotope dilution method based on inductivly coupled plasma mass spectrometry.The results showed that:(1)the average concentrations of Pt,Pd and Rh were 2186.136,1239.827,346.172 ng/g in PM2.5 of metal smelting dust,respectively,which were significantly higher than those in coal combustion dust(219.001,475.532,23.238 ng/g,respectively),vehicle emissions dust(297.877,329.866,74.760 ng/g,respectively)and other pollution sources,could be the main cause of PGE pollution in atmospheric PM2.5 in Guiyang.(2)The average concentrations of Pt,Pd and Rh in PM2.5 of soil dust were 8.58,97.56,36.92 times of the background values of uncontaminated soil,indicating that soil samples in the study area had been contaminated by human activities.(3)The average concentrations of Pt,Pd and Rh at traffic light intersections were higher than those without traffic lights in the same road,which was related to the large traffic flow and idle driving condition at the traffic light intersection. |
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| Keywords: | Guiyang pollution source PM2 5 platinum group elements distribution characteristics |
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