中国环境科学
 
 
中国环境科学  2016, Vol. 36 Issue (7): 1938-1946    DOI:
大气污染与控制 最新目录| 下期目录| 过刊浏览| 高级检索 |
合肥城区PM10及PM2.5季节污染特征及来源解析
陈刚1, 刘佳媛1, 皇甫延琦1, 王海婷1, 史国良1, 田瑛泽1, 朱余2, 李菁3, 冯银厂1
1. 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 300350;
2. 安徽省环境监测中心站, 安徽 合肥 230071;
3. 合肥市环境监测中心站, 安徽 合肥 230031
Seasonal variations and source apportionment of ambient PM10 and PM2.5 at urban area of Hefei, China
CHEN Gang1, LIU Jia-yuan1, HUANGFU Yan-qi1, WANG Hai-ting1, SHI Guo-liang1, TIAN Ying-ze1, ZHU Yu2, LI Qing3, FENG Yin-chang1
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 300350, China;
2. Anhui Provincial Environmental Monitoring Center Station, Hefei 230071, China;
3. Hefei Environmental Monitoring Center Station, Hefei 230031, China

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摘要 

于2014年4月、8月、10月和12月在合肥市城区采集了大气PM10和PM2.5样品,对PM10和PM2.5的质量浓度及其化学组分(无机元素、含碳组分和水溶性离子)进行了测定.结果显示:合肥城区的PM10和PM2.5的平均质量浓度高达113, 83μg/m3,分别超出国家环境空气质量标准年均PM10和PM2.5限值的1.61和2.37倍.不同粒径的颗粒物中主要化学组分含量的高低顺序基本一致,水溶性离子的含量最高,其次为碳组分,无机元素.利用正交矩阵因子分析(PMF)对合肥城区PM10和PM2.5的本地来源进行解析,结果表明: PM10中二次源、燃煤、机动车尾气尘及地壳尘的贡献百分比分别为32.5%、25.9%、15.7%和25.5%;PM2.5中二次源、燃煤、机动车尾气尘及地壳尘的贡献百分比分别为38.8%、25.9%、9.9%和21.7%.利用激光雷达评估合肥市环境中颗粒物PM10的区域传输,四个季节常规贡献率分别为13.4%、12.9%、13.5%和16.4%.

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陈刚
刘佳媛
皇甫延琦
王海婷
史国良
田瑛泽
朱余
李菁
冯银厂
关键词 合肥PM10PM2.5季节污染特征来源解析    
Abstract

PM10 and PM2.5 samples were collected from April, August, October and December in 2014 at urban five sites in Hefei. The concentration and chemical compositions (including elements, carbonaceous species and water soluble inorganic ions) of PM10 and PM2.5 were determined. The average PM10 and PM2.5 mass concentration was 113μg/m3, 83μg/m3, respective, which was 1.61 and 2.37 times of the annual PM10 and PM2.5 National Ambient Air Quality Standard of China. The contents of main chemical components in different particle size fractions were consistent. For instance, the content of water soluble ions was the highest, followed by carbon fractions and inorganic elements. Positive Matrix Factorization (PMF) model was performed to identify the sources of PM10 and PM2.5 at urban Hefei.Four sources significantly contributing to the observed PM10 were: secondary nitrate /sulfate, coal combustion, vehicle emissions and soil dust and fugitive dust, with the contributions of 32.5%, 25.9 %, 15.7% and 25.5% to PM10 mass concentration, respectively. The contributions to PM2.5 of these four sources were 38.8%, 25.9%, 9.9% and 21.7%, respectively. The regional transmission of PM10 in Hefei was evaluated by using laser radar, and the four season contribution were 13.4%, 12.9%, 13.5% and 16.4%, respectively.

Key wordsHefei    PM10    PM2.5    seasonal variations    source apportionment   
收稿日期: 2015-12-15     
: X513  
基金资助:

国家自然科学基金项目(201509020)

通讯作者: 田瑛泽,讲师,tianyingze@hotmail.com     E-mail: tianyingze@hotmail.com
作者简介: 陈刚(1990-),男,安徽安庆人,南开大学硕士研究生,主要研究大气颗粒物来源解析.发表论文7篇.
引用本文:   
陈刚, 刘佳媛, 皇甫延琦, 王海婷, 史国良, 田瑛泽, 朱余, 李菁, 冯银厂. 合肥城区PM10及PM2.5季节污染特征及来源解析[J]. 中国环境科学, 2016, 36(7): 1938-1946. CHEN Gang, LIU Jia-yuan, HUANGFU Yan-qi, WANG Hai-ting, SHI Guo-liang, TIAN Ying-ze, ZHU Yu, LI Qing, FENG Yin-chang. Seasonal variations and source apportionment of ambient PM10 and PM2.5 at urban area of Hefei, China. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(7): 1938-1946.
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