Chemical composition and source apportionment of rainwater at Guiyang, SW China

	Chemical composition and source apportionment of rainwater at Guiyang, SW China
	Xiao Hong-Wei; Xiao Hua-Yun; Long Ai-Min; Wang Yan-Li; Liu Cong-Qiang
	2013
发表期刊	Journal of Atmospheric Chemistry
卷号	70 期号:3 页码:269-281
摘要	This study systematically analyzed the concentrations of cations and anions and determined the pH in the rainwater at Guiyang from Oct. 2008 to Sep. 2009. The pH in the rainwater varied between 3.35 and 9.99 with a volume-weighted mean value of 4.23. The volume-weighted mean concentrations of anions followed the order SO4 (2-)> Cl-> F-> NO3 (-), whereas the volume-weighted mean concentrations of cations followed the order Ca2+> NH4 (+)> Na+> Mg2+> K+. This finding indicates that SO4 (2-) was the main anion and that Ca2+ and NH4 (+) were the main cations. Significant correlations between each pair of ions (SO4 (2-), NO3 (-), NH4 (+), Ca2+, and Mg2+) were observed, suggesting that CaSO4, Ca(NO3)(2), MgSO4, Mg(NO3)(2), NH4NO3, (NH4)(2)SO4, and/or NH4HSO4 exist in the atmosphere at Guiyang. The soil-derived species (such as Ca2+) played an important role in the neutralization of the acidity in rainwater. The SO4 (2-) and NO3 (-) in the rainwater were mainly from anthropogenic sources, and their contributions accounted for 98.1 % and 94.7 %, respectively. NH4 (+) was also most likely derived from anthropogenic sources, such as domestic and commercial sewage, and played an important role in the neutralization of the rainwater at Guiyang.
关键词	Rainwater Chemical Composition Anthropogenic Source Source Contribution
学科领域	环境地球化学
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.gyig.ac.cn/handle/352002/5003
专题	环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文
推荐引用方式 GB/T 7714	Xiao Hong-Wei,Xiao Hua-Yun,Long Ai-Min,et al. Chemical composition and source apportionment of rainwater at Guiyang, SW China[J]. Journal of Atmospheric Chemistry,2013,70(3):269-281.
APA	Xiao Hong-Wei,Xiao Hua-Yun,Long Ai-Min,Wang Yan-Li,&Liu Cong-Qiang.(2013).Chemical composition and source apportionment of rainwater at Guiyang, SW China.Journal of Atmospheric Chemistry,70(3),269-281.
MLA	Xiao Hong-Wei,et al."Chemical composition and source apportionment of rainwater at Guiyang, SW China".Journal of Atmospheric Chemistry 70.3(2013):269-281.

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