干旱区生态环境知识资源中心(Arid): 青岛市大气PM

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	青岛市大气PM_(2.5)元素组成及来源研究
其他题名	Element Compositions and Source of PM_(2.5) Aerosols in Qingdao
	李秀镇 1; 盛立芳 2; 徐华 1; 屈文军 2
来源期刊	环境科学
ISSN	0250-3301
出版年	2012
卷号	33 期号:5 页码:1438-1445
中文摘要	利用2007年5月~2008年5月气溶胶观测资料和逐日天气资料,分析了青岛市2.5mum气溶胶粒子(PM_(2.5))浓度特征、元素组成和来源.结果表明,青岛市PM_(2.5)和PM_(10)年均浓度分别为86.6mug.m-3和120mug.m-3.PM_(2.5)浓度采暖季高于非采暖季,夏季最低.PM_(2.5)浓度在荒漠和人为共同影响下的气团中最高,在海洋影响气团中最低.PM_(2.5)和PM_(10)的主要组成元素是S、Ca、Cl、K和Fe,主要污染元素集中在PM_(2.5)中;PM_(2.5)中Cl、K、Zn、Br和Pb浓度采暖季较大,夏季较小,Ca元素变化趋势则相反.V、Cr、Cu、As、Se、Sr和Zr的浓度受不同来源气团影响不显著,S、Cl、K、Ti、Mn、Fe、Zn、Br、Pb和Ca的浓度在不同来源气团下存在较大差异.降水对S、K、Pb和Fe质量浓度的影响最为明显.富集因子分析表明,所有元素在PM_(2.5)中的富集因子普遍大于PM_(10),青岛市非地壳来源的元素在PM_(2.5)中所占比例大于PM_(10).Ca元素富集因子夏季较大,可能受到建筑尘影响.
英文摘要	Atmospheric aerosol collected from May,2007 to May,2008 and daily meteorological data were used to investigate the concentration levels,element compositions and source of PM_(2.5) aerosols in Qingdao.The results showed that concentrations of PM_(2.5) and PM_(10) were 86.6 mug·m-3 and 120 mug·m-3 respectively.The PM_(2.5) concentration in heating season was markedly higher than that in non-heating season.The PM_(2.5) concentration in summer was lower than that in other seasons.PM_(2.5) concentration showed the lowest value in the air mass affected by the sea while it was the highest in the air mass affected both by desert and anthropogenic activities.The main chemical elements of PM_(2.5) and PM_(10) were S,Ca,Cl,K and Fe.The main polluted elements were concentrated in PM_(2.5).Concentrations of Cl,K,Zn,Br and Pb of PM_(2.5) were higher in heating season and lower in summer while Ca showed opposite properties.Different air masses had a little influence on the concentration of V,Cr,Cu,As,Se,Sr and Zr.Concentrations of S,Cl,K,Ti,Mn,Fe,Zn,Br,Pb and Ca in different air masses were different.The precipitation significantly cleaned up concentrations of S,K,Pb and Fe.The enrichment factors of all elements in PM_(2.5) were higher than those in PM_(10) which means that the proportion of rare earth elements in PM_(2.5) was larger than PM_(10).The enrichment factor of Ca was higher in summer which may be due to the construction dust.
中文关键词	元素 ; 气团 ; 富集因子 ; 气象因子
英文关键词	PM_(2.5) PM_(2.5) trace elements air mass enrichment factor meteorological factors
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:4511439
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228247
作者单位	1.中国海洋大学海洋环境学院, 青岛, 山东 266100, 中国; 2.中国海洋大学,海洋-大气相互作用与气候实验室, 物理海洋教育部重点实验室, 青岛, 山东 266100, 中国
推荐引用方式 GB/T 7714	李秀镇,盛立芳,徐华,等. 青岛市大气PM_(2.5)元素组成及来源研究[J],2012,33(5):1438-1445.
APA	李秀镇,盛立芳,徐华,&屈文军.(2012).青岛市大气PM_(2.5)元素组成及来源研究.环境科学,33(5),1438-1445.
MLA	李秀镇,et al."青岛市大气PM_(2.5)元素组成及来源研究".环境科学 33.5(2012):1438-1445.