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沈阳市PM2.5污染组分特征及其来源解析 预览

Characteristics of PM2.5 pollution components and their sources in Shenyang
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摘要 为了解沈阳市空气细颗粒物的污染特征及主要来源,于2015年2月、5月、8月和10月在沈阳市采集PM2.5样品,对PM2.5质量浓度及其化学组分(无机元素、含碳组分和水溶性离子)进行测定.结果显示,采样期间沈阳市PM2.5平均质量浓度为69μg/m^3,是《环境空气质量标准》(GB3095-2012)年均二级标准限值(35μg/m^3)的2.0.水溶性离子在PM2.5中的含量最高,其次为碳组分、无机元素.富集因子结果表明:沈阳市富集因子值最高的元素来自于燃煤、交通污染、工业排放等污染源.正交矩阵因子分析(PMF)结果表明:PM2.5结果中燃煤源、二次源、工业源、扬尘源和交通源的贡献比分别为33.4%、27.2%、16.7%、11.5%、11.2%. To understand the pollution characteristics and major sources of fine particulate matterin Shenyang city,PM2.5 samples were collected at Shenyang in February,May,August and October in 2015.The mass concentration and component composition of PM2.5(inorganic elements,carbonaceous species and water-soluble ions)were analyzed.The results showed that the average mass concentration of PM2.5 was 69μg/m^3 during the sampling period,which was 1.97 times higher than the standardary limit(35μg/m^3)regulated by of Chinese Ambient air quality standards(GB 3095~2012).For instance,the content of water-soluble ions in PM2.5 was the highest,followed by carbon fractions and inorganic elements.The enrichment factor(EF)results showed that the highest EF value elements came from coal burning,traffic pollution and industrial emission.The Positive Matrix Factor(PMF)model showed that the contribution ratios of coal combustion,secondary aerosol,industrial emissions,fugitivedust and traffic emissions in PM2.5 were 33.37%、27.27%、16.68%、11.49% and 11.19%.
作者 田莎莎 张显 卞思思 赵雪艳 韩斌 余浩 殷宝辉 陈莉 白志鹏 TIAN Sha-sha;ZHANG xian;BIAN Si-si;ZHAO Xue-yan;HAN Bin;YU Hao;YIN Bao-hui;CHEN Li;BAI Zhi-peng(School of Geography and Environmental Sciences,Tianjin Normal University,Tianjin 300380,China;Shenyang Academy of Environmental Sciences,Shenyang 110167,China;State Key Laboratory of Environmental Criteria and Risk Assessment,Chinese Research Academy of Environmental Sciences,Beijing 100012,China;Academy of Water Sciences,Beijing Normal University,Beijing 100875,China)
出处 《中国环境科学》 EI CAS CSCD 北大核心 2019年第2期487-496,共10页 China Environmental Science
基金 国家重点研发计划(2017YFC0212501).
关键词 PM2.5 水溶性离子 碳组分 无机元素 源解析 沈阳 PM2.5 water-soluble ions carbonaceous species inorganic elements source apportionment Shenyang
作者简介 田莎莎(1993-),女,山东菏泽人,天津师范大学硕士研究生,主要从事空气颗粒物污染与防治.发表论文1篇;责任作者:殷宝辉,工程师,yinbh@craes.org.cn;陈莉,教授,amychenli1981@126.com
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