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DOI	10.1016/j.atmosenv.2011.07.060
	Trace elements and lead isotopic composition of PM10 in Lhasa, Tibet
	Cong, Zhiyuan; Kang, Shichang; Luo, Chunling; Li, Qing; Huang, Jie; Gao, Shaopeng; Li, Xiangdong
发表日期	2011
ISSN	1352-2310
卷号	45 期号:34
英文摘要	This paper presents the first detailed investigation on airborne trace metals and their potential major sources at Lhasa, the largest city in Tibetan Plateau (TP). The whole year PM10 samples were collected during September 2007 and August 2008. The annual average concentration of PM10 in Lhasa was 51.8 +/- 42.5 mu g m(-3), lower than those of major Asian cities. Distinct seasonal patterns were observed in PM10 concentration, with higher concentrations in winter, and lower in summer. The mean elemental concentrations were generally comparable with other urban areas, but significantly higher than those from a remote site in TP (i.e., Nam Co). Crustal elements, including Na, Mg, Al, K, Ca, Sc, Ti, V. Mn, Fe, As and Ba, had similar seasonal patterns in PM10, while other elements, such as Cr, Co, Ni, Cu, Zn, and Cd, had less distinct seasonal variations, suggesting more anthropogenic inputs of the latter group. The result of principle component analysis (PCA) on trace elements demonstrated that fugitive dusts, traffic emissions and waste incineration activities were probably the major sources of anthropogenic metals in the atmosphere at Lhasa. The Pb isotopic compositions revealed that the metal was mainly originated from nature background with a minor contribution from the cement factory. The data obtained in this study can be useful for making pollution control strategies in the city, and also valuable for trace element studies in other environmental medium, such as snow, ice core, and lake sediments in the TP region. (C) 2011 Elsevier Ltd. All rights reserved.
关键词	Atmospheric aerosols Trace elements Pb isotope Lhasa Tibetan Plateau
学科领域	Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences ; Meteorology & Atmospheric Sciences
来源期刊	ATMOSPHERIC ENVIRONMENT
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111610
作者单位	Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100085, Peoples R China
推荐引用方式 GB/T 7714	Cong, Zhiyuan,Kang, Shichang,Luo, Chunling,et al. Trace elements and lead isotopic composition of PM10 in Lhasa, Tibet[J]. 中国科学院西北生态环境资源研究院,2011,45(34).
APA	Cong, Zhiyuan.,Kang, Shichang.,Luo, Chunling.,Li, Qing.,Huang, Jie.,...&Li, Xiangdong.(2011).Trace elements and lead isotopic composition of PM10 in Lhasa, Tibet.ATMOSPHERIC ENVIRONMENT,45(34).
MLA	Cong, Zhiyuan,et al."Trace elements and lead isotopic composition of PM10 in Lhasa, Tibet".ATMOSPHERIC ENVIRONMENT 45.34(2011).