| 呼包鄂地区冬季、夏季PM2.5污染特征 |
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| 引用本文： | 李伊明,刘佳媛,史国良,皇甫延琦,张昕,杨奕,冯银厂.呼包鄂地区冬季、夏季PM2.5污染特征[J].环境科学,2020,41(1):31-38. |
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| 作者姓名： | 李伊明 刘佳媛 史国良 皇甫延琦 张昕 杨奕 冯银厂 |
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| 作者单位： | 南开大学环境科学与工程学院,国家环境保护城市空气颗粒物污染防治重点实验室,天津 300071,中国环境科学研究院大气环境科学研究所,北京 100012,南开大学环境科学与工程学院,国家环境保护城市空气颗粒物污染防治重点实验室,天津 300071,南开大学环境科学与工程学院,国家环境保护城市空气颗粒物污染防治重点实验室,天津 300071,中国环境科学研究院国家环境保护生态工业重点实验室,北京 100012,中国环境科学研究院国家环境保护生态工业重点实验室,北京 100012,南开大学环境科学与工程学院,国家环境保护城市空气颗粒物污染防治重点实验室,天津 300071 |
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| 基金项目： | 国家自然科学基金项目（41775149）；中央高校基本科研业务费专项 |
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| 摘 要： | 基于PMF模型源解析结果分析了呼包鄂地区冬季、夏季主要污染源及污染特征.物质重构结果表明,有机物(19. 9%～44. 6%)、地壳物质(9. 7%～46. 2%)在呼包鄂地区受体PM_(2.5)中占有较大比重.源解析结果表明,冬季各类源对PM_(2.5)的分担率大小依次为:二次源(26. 7%)燃煤源(26. 1%)机动车源(19. 1%)扬尘源(18. 1%),夏季则为二次源(26. 7%)扬尘源(22. 3%)燃煤源(16. 6%)机动车源(15. 1%) SOC(8. 7%),可以看出二次源在呼包鄂地区冬季和夏季均为首要贡献源类,冬季燃煤源、夏季扬尘源对呼包鄂地区的影响较大.分析冬季、夏季典型污染过程,对应于源解析结果,冬季主要污染源为二次源、燃煤源,夏季为二次源.
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| 关 键 词： | 呼包鄂地区 污染特征 正定矩阵因子分解模型(PMF) 重污染过程 PM2.5 |
| 收稿时间： | 2019/4/22 0:00:00 |
| 修稿时间： | 2019/7/22 0:00:00 |
PM2.5 Pollution Characteristics During Winter and Summer in the Hohhot-Baotou-Ordos Region, China |
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| LI Yi-ming,LIU Jia-yuan,SHI Guo-liang,HUANGFU Yan-qi,ZHANG Xin,YANG Yi and FENG Yin-chang.PM2.5 Pollution Characteristics During Winter and Summer in the Hohhot-Baotou-Ordos Region, China[J].Chinese Journal of Environmental Science,2020,41(1):31-38. |
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| Authors: | LI Yi-ming LIU Jia-yuan SHI Guo-liang HUANGFU Yan-qi ZHANG Xin YANG Yi and FENG Yin-chang |
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| Institution: | State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China,Institute of Atmospheric Environmental Science, Chinese Research Academy of Environmental Sciences, Beijing 100012, China,State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China,State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China,State Environmental Protection Key Laboratory of Eco-Industry, Chinese Research Academy of Environmental Sciences, Beijing 100012, China,State Environmental Protection Key Laboratory of Eco-Industry, Chinese Research Academy of Environmental Sciences, Beijing 100012, China and State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China |
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| Abstract: | 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. |
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| Keywords: | Hohhot-Baotou-Ordos region pollution characteristics positive matrix factor(PMF) heavy pollution episodes PM2 5 |
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