Chemical characteristics of rainwater in Sichuan basin, a case study of Ya'an

doi:10.1007/s11356-016-6363-4

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 黄土与第四纪地质国家重点实验室（2010~）

	Chemical characteristics of rainwater in Sichuan basin, a case study of Ya'an
	Wang, Xian-Xiang 3; Liu, Zi-Fang 1; Ho, Steven Sai Hang 2; Shu, Man 3; Zhang, Meng 3; Li, Yun-Chun 3,4; Zhao, Xiao-Qing 3
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2016-07-01
卷号	23 期号:13 页码:13088-13099
关键词	Acid Rain Chemical Composition Sources Identification Sichuan Basin
DOI	10.1007/s11356-016-6363-4
文献子类	Article
英文摘要	Rainwater chemistry was investigated at a semi-rural site in Ya'an, Sichuan basin with rain samples collected from May 2013 to July 2014. The rainwater pH values ranged from 3.25 to 6.86, with an annual volume-weighted mean (VWM) of 4.38, and the acid rain frequency was 74 %. Such severe acidification, 15 % of the total events showed a pH below 4.0, attributed to the deficiency of Ca2+, significant anthropogenic pollution contribution, and rainy pattern to this area. The annual VWM of total ions concentration was 477.19 mu cq/L. NH4+ was the most abundant ionic species, followed by SO42-, NO3-, Ca2+, Cl-, Na+, K+, Mg2+, and F- in a descending order. The total ionic concentrations presented a seasonal trend of lower values in autumn and summer but higher ones in winter and spring. Based on enrichment factor, correlation analysis and principle component analysis, three factors were identified: factor 1 (NH4+, SO42-, NO3-, K+, and Cl-, 47.45 % of the total variance) related to anthropogenic sources (coal/fuel combustion, biomass burning and agriculture), factor 2 (Ca2+, Mg2+, Na+, and Cl-, 34.01 % of the total variance) associated with natural sources, and factor 3 (H+, 11.78 % of the total variance) related to free acidity. Back trajectory analysis indicates that the rainwater chemistry in Ya'an was mainly affected by regional air masses from Sichuan basin. Long-range transported air masses from southwest with heavy anthropogenic pollution increased the total ion concentration and acidity of rainwater. Considering its special topography, anthropogenic emissions from regional and long-range transport (especially from southwest) must be controlled effectively to improve the acid rain condition of non-urban areas in Sichuan basin.
WOS关键词	STRONTIUM ISOTOPE CHARACTERIZATION ; LONG-TERM TREND ; WET DEPOSITION ; PRECIPITATION CHEMISTRY ; INORGANIC-IONS ; SOUTH CHINA ; URBAN SITE ; SOUTHWESTERN CHINA ; MAJOR IONS ; ACID-RAIN
WOS研究方向	Environmental Sciences & Ecology
语种	英语
WOS记录号	WOS:000378817300046
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/5721]
专题	地球环境研究所_黄土与第四纪地质国家重点实验室（2010~）
作者单位	1.Environm Monitoring Stn Yaan City, Yaan 625014, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710075, Peoples R China 3.Sichuan Agr Univ, Coll Sci, Yaan 625014, Peoples R China 4.Nanjing Univ Informat Sci & Technol, Sch Environm Sci & Engn, Nanjing 210044, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xian-Xiang,Liu, Zi-Fang,Ho, Steven Sai Hang,et al. Chemical characteristics of rainwater in Sichuan basin, a case study of Ya'an[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2016,23(13):13088-13099.
APA	Wang, Xian-Xiang.,Liu, Zi-Fang.,Ho, Steven Sai Hang.,Shu, Man.,Zhang, Meng.,...&Zhao, Xiao-Qing.(2016).Chemical characteristics of rainwater in Sichuan basin, a case study of Ya'an.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,23(13),13088-13099.
MLA	Wang, Xian-Xiang,et al."Chemical characteristics of rainwater in Sichuan basin, a case study of Ya'an".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 23.13(2016):13088-13099.