Chemical composition of precipitation in Shenzhen, a coastal mega-city in South China: Influence of urbanization and anthropogenic activities on acidity and ionic composition

doi:10.1016/j.scitotenv.2019.01.096

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院新生代地质与环境重点实验室

	Chemical composition of precipitation in Shenzhen, a coastal mega-city in South China: Influence of urbanization and anthropogenic activities on acidity and ionic composition
	Zhou, Xiaode 1,3; Xu, Zhifang 1,3; Liu, Wenjing 1,2,3; Wu, Yao 4; Zhao, Tong 1,3; Jiang, Hao 1,3; Zhang, Xuan 1,3; Zhang, Jiangyi 1,3; Zhou, Li 5; Wang, Yuchen 1,3
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2019-04-20
卷号	662 页码:218-226
关键词	Rain acidification Neutralizing capacity Anthropogenic activities Urbanization Shenzhen
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2019.01.096
英文摘要	Rainwater samples from Shenzhen in south China were collected over the period of a year, and the chemical compositions were measured with the main purpose of understanding the acidification of rainwater and the controlling factors. The pH value of precipitation ranged from 3.72 to 677, with a volume-weighted mean (VWM) value o14,29, and the acid rain frequency was 97%.The VWM concentrations of anions and cations followed the order of S021--Cl-> NO3and Na ' Ca2--NH4Mg2 K, respectively. Air mass back-trajectory and positive matrix factorization analyses indicated that sources of ions in rainwater were mainly from sea salt, soil dust and anthropogenic activities. Compared with other areas in China, the rainwater of Shenzhen has the lowest values of the NP/AP, ApH and NF values of Ca2-and NH4 indicating that the lack of the capacity for neutralization could be the main reason for the severe acid rain problem. It is noteworthy that the rain acidification tendency is obvious, and the pH value has reduced by 1.0 units since the 1980s. Based on a comparison of the chemical compositions of the rainwater from different historical periods, the NO concentration was found to have increased consistently, whereas the NH.il concentration maintained a decreasing trend since 1980. On the other hand, the nssSO and nss-Ca2 concentrations increased after 1980 and then decreased alter 1994. Meanwhile, the decreasing pH was accompanied by a decreasing NP/AP ratio. These results suggest that the changes in human activities at different stages of urban development can lead to a synergistic change in the chemical characteristics of precipitation. Both an increase in the acidic species emissions (especially N0x) due to rapid economic development and a decrease in the alkaline ions concentration due to urbanization have resulted in the rain acidification tendency in Shenzhen. (C) 2019 Elsevier B.V. All rights reserved.
资助项目	Natural Science Foundation of China[41673020] ; Natural Science Foundation of China[41730857] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB26000000] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB15010405]
WOS关键词	STRONTIUM ISOTOPE CHARACTERIZATION ; ATMOSPHERIC PRECIPITATION ; WET PRECIPITATION ; URBAN SITE ; RAINWATER ; CHEMISTRY ; DEPOSITION ; RAIN ; REGION ; PROVINCE
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000459163900023
资助机构	Natural Science Foundation of China ; Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Natural Science Foundation of China ; Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Natural Science Foundation of China ; Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Natural Science Foundation of China ; Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/90690]
专题	地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者	Xu, Zhifang
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China 2.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Wetland Ecol & Environm, Changchun 130102, Jilin, Peoples R China 5.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Xiaode,Xu, Zhifang,Liu, Wenjing,et al. Chemical composition of precipitation in Shenzhen, a coastal mega-city in South China: Influence of urbanization and anthropogenic activities on acidity and ionic composition[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,662:218-226.
APA	Zhou, Xiaode.,Xu, Zhifang.,Liu, Wenjing.,Wu, Yao.,Zhao, Tong.,...&Wang, Yuchen.(2019).Chemical composition of precipitation in Shenzhen, a coastal mega-city in South China: Influence of urbanization and anthropogenic activities on acidity and ionic composition.SCIENCE OF THE TOTAL ENVIRONMENT,662,218-226.
MLA	Zhou, Xiaode,et al."Chemical composition of precipitation in Shenzhen, a coastal mega-city in South China: Influence of urbanization and anthropogenic activities on acidity and ionic composition".SCIENCE OF THE TOTAL ENVIRONMENT 662(2019):218-226.