| 雾霾频发区域典型城市大气PM2.5中金属污染特征及来源分析 |
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| 引用本文： | 邓林俐,张凯山.雾霾频发区域典型城市大气PM2.5中金属污染特征及来源分析[J].环境工程,2020,38(5):113-119. |
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| 作者姓名： | 邓林俐 张凯山 |
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| 作者单位： | 四川大学 建筑与环境学院, 成都 610065 |
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| 基金项目： | 国家自然科学基金面上项目;环境保护部公益性行业科研专项项目 |
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| 摘 要： | 吸附在大气细颗粒物PM2.5中的金属元素具有强稳定性和富集性,随着城市大气PM2.5污染加剧,对公众健康构成极大的威胁。为了解大气PM2.5中金属污染的地区特征,选取中国雾霾发生频次较高区域中典型城市作为研究对象,概述了2013—2017年城市大气PM2.5中金属污染水平、时空分布特征及其主要来源。经分析,地区气象条件、工业布局和污染源的差别是各城市大气PM2.5中金属元素污染水平及时空分布存在较大差异的主要原因。二次气溶胶、燃煤和生物质燃烧在研究城市大气PM2.5金属元素来源中占据主要贡献,其他源类在各个地区贡献率有所不同。未来的工作应进一步探讨工业布局的改变对大气PM2.5及其中金属元素污染及来源的影响,以期为环保部门制定有效的大气污染防治措施提供参考。
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| 关 键 词： | 大气细颗粒物 金属元素 污染水平 源解析 |
| 收稿时间： | 2019-09-12 |
ANALYSIS OF CHARACTERISTICS AND SOURCE APPORTION OF METAL POLLUTION IN PM2.5 IN TYPICAL METROPOLITAN CITIES WITH HAZE POLLUTION |
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| DENG Lin-li,ZHANG Kai-shan.ANALYSIS OF CHARACTERISTICS AND SOURCE APPORTION OF METAL POLLUTION IN PM2.5 IN TYPICAL METROPOLITAN CITIES WITH HAZE POLLUTION[J].Environmental Engineering,2020,38(5):113-119. |
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| Authors: | DENG Lin-li ZHANG Kai-shan |
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| Affiliation: | School of Architecture and Environment, Sichuan University, Chengdu 610065, China |
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| Abstract: | Metal elements adsorbed in PM2.5 imposed a great threat to the public health, due to its strong stability and enrichment. In order to characterize the metal elements absorbed in PM2.5, four metropolitan cities with severe haze pollution, i.e., Beijing, Chengdu, Shanghai and Guangzhou, were selected for this study. This paper summarized key studies from 2013 to 2017 related to air pollution, especially PM2.5 and its metal composition in the selected cities. Analysis showed that metal elements in PM2.5 of the selected cities varied both spatially and temporally due to regional meteorological conditions, industrial structures and pollution sources. Secondary aerosols, coal burning and biomass combustion were the three key sources to metal elements in PM2.5 for all the selected cities. While the contributions from other sources varied by cities. The findings implied that the impact of industrial structure on metal elements apportionment in PM2.5 should be further investigated, which would provide insights regarding policy making for effective air pollution control. |
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