PM2.5 Pollution Characteristics During Winter and Summer in the Hohhot-Baotou-Ordos Region, China

被引：1

作者：

Li Y.-M. ^{[1
]}

Liu J.-Y. ^{[2
]}

Shi G.-L. ^{[1
]}

Huangfu Y.-Q. ^{[1
]}

Zhang X. ^{[3
]}

Yang Y. ^{[3
]}

Feng Y.-C. ^{[1
]}

机构：

[1] State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin

[2] Institute of Atmospheric Environmental Science, Chinese Research Academy of Environmental Sciences, Beijing

[3] State Environmental Protection Key Laboratory of Eco-Industry, Chinese Research Academy of Environmental Sciences, Beijing

来源：

Huanjing Kexue/Environmental Science | 2020年 / 41卷 / 01期

关键词：

Heavy pollution episodes; Hohhot-Baotou-Ordos region; PM[!sub]2.5[!/sub; Pollution characteristics; Positive matrix factor(PMF);

D O I：

10.13227/j.hjkx.201904207

中图分类号：

学科分类号：

摘要：

Based on the source apportionment by positive matrix factorization (PMF) model, we analyze the main sources and characteristics of aerosol fine particulate matter (PM2.5) during winter and summer in the Hohhot-Baotou-Ordos region, China. We found that organic (19.9%-44.6%) and crustal compositions (9.7%-46.2%) accounted for a large proportion of aerosol PM2.5 according to the results of mass closure. The results of source apportionment showed that the contribution of sources rank as: secondary inorganic aerosol (26.7%)>coal (26.1%)>motor vehicle (19.1%)>dust (18.1%) during winter, and as: secondary inorganic aerosol (26.7%)>dust (22.3%)>coal (16.6%)>vehicle exhaust (15.1%)>SOC (8.7%) during summer. Findings suggest that the contribution of sources with secondary inorganic aerosol were the largest sources both in winter and summer, and that the Hohhot-Baotou-Ordos region was also affected by coal during the winter and dust during the summer. Corresponding to the source apportionment, analysis of typical heavy pollution episodes in winter and summer showed that the pollution sources during the winter were mainly secondary inorganic aerosol and coal, whereas they were mainly secondary inorganic aerosol during the summer. © 2020, Science Press. All right reserved.

引用

页码：31 / 38

页数：7

共 36 条

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