| 上海城区典型空气污染过程中细颗粒污染特征研究 |
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| 引用本文： | 张懿华,段玉森,高松,魏海萍,沙斐,蔡艳,沈丽萍.上海城区典型空气污染过程中细颗粒污染特征研究[J].中国环境科学,2011,31(7):1115-1121. |
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| 作者姓名： | 张懿华 段玉森 高松 魏海萍 沙斐 蔡艳 沈丽萍 |
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| 作者单位： | 1. 上海市环境监测中心,上海,200030
2. 浦东新区环境监测站,上海,200135 |
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| 基金项目： | 上海市环境保护科学发展基金(09-26) |
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| 摘 要： | 采集了上海城区2009年10月10~21日期间2次空气污染过程的样品,在对污染过程分析的基础上,着重分析了PM2.5及其化学组分的变化,探讨了污染源及形成机制.研究表明,14日的灰霾过程主要由本地排放的污染物二次转化形成,PM2.5占PM10比重超过60%且PM2.5中离子组分含量高.17~19日的浮尘过程中,受北方沙尘影响本市粗颗粒浓度上升,PM2.5所占比重下降,二次离子组分从细颗粒物向粗颗粒物转移且Ca2+浓度上升,同时受到长江三角洲区域秸秆焚烧的影响,细颗粒物中K+, EC和OC含量高.因此,应在控制本地源排放的同时,加强对细颗粒尤其是二次细颗粒污染及其前体物的协同控制.
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| 关 键 词： | 细颗粒 PM2.5 水溶性离子 碳组分 灰霾 浮尘 秸秆焚烧 |
| 收稿时间： | 2010-10-25; |
Characteristics of fine particulate matter during a typical air pollution episode in Shanghai urban area |
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| ZHANG Yi-hua,DUAN Yu-sen,GAO Song,WEI Hai-ping,SHA Fei,CAI Yan,SHEN Li-ping.Characteristics of fine particulate matter during a typical air pollution episode in Shanghai urban area[J].China Environmental Science,2011,31(7):1115-1121. |
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| Authors: | ZHANG Yi-hua DUAN Yu-sen GAO Song WEI Hai-ping SHA Fei CAI Yan SHEN Li-ping |
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| Institution: | ZHANG Yi-hua1,DUAN Yu-sen1,GAO Song1,WEI Hai-ping1,SHA Fei2,CAI Yan2,SHEN Li-ping2(1.Shanghai Environmental Monitoring Center,Shanghai 200030,China,2.Pudong New Area Environmental Monitoring Station,Shanghai 200135,China) |
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| Abstract: | Fine particulate matter was sampled in Shanghai urban area during two air pollution events,from October 10th to 21st,2009.Based on the analysis of the pollution episode,characteristics of PM2.5 and its chemical composition were analyzed to discuss the pollution sources and formation mechanism.The haze event,which occurred on October 14th,was mainly caused by the secondary transformation of local air pollutants.The ratio of PM2.5 to PM10 exceeded 60% and the concentrations of water soluble ions in PM2.5 were... |
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| Keywords: | fine particulate matter PM2 5 water soluble ion carbonaceous composition haze floating dust straw burning |
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