Urban and rural observations of carboxylic acids in rainwater in Southwest of China: the impact of urbanization

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室 > 污染过程与控制实验室

	Urban and rural observations of carboxylic acids in rainwater in Southwest of China: the impact of urbanization
	Xu, Gang1,2 ; Lee, Xinqing 2; Lv, Yingchun 1
刊名	JOURNAL OF ATMOSPHERIC CHEMISTRY
	2009-04-01
卷号	62 期号:3 页码:249-260
关键词	Carboxylic Acids Formic Acid Acetic Acid Rainwater
ISSN号	0167-7764
通讯作者	Lv, YC, Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
产权排序	Chinese Acad Sci, Yantai Inst Coastal Zone Res;Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem
文献子类	Article
英文摘要	Seven carboxylic acids in rainwater were simultaneously determined using ion chromatography for 13 months in two different sites, Guiyang and Shangzhong, southwest of China. Results showed formic, acetic and oxalic acids were the three predominant carboxylic acids. Their volume-weighted average concentrations were 14.24, 9.35, 2.79 mu mol/L in Guiyang and 4.95, 1.35, 2.31 mu mol/L in Shangzhong, respectively. A distinctive diurnal pattern in carboxylic acid concentrations (daytime > nighttime, t test, p < 0.05) was observed during the growing season in Guiyang. Shangzhong witnessed higher concentration of these acids during the growing season than that during the non-growing season. Direct emissions from growing vegetation or soils probably account for the main provenance of the acids in the rural area. However, the opposite trend were found in Guiyang and the anthropogenic sources during the non-growing season were the main reason. By comparison of our result with the previous data about 20 years ago, we calculated that at least 42% of acetic acids and 69% of formic acid originated from the anthropogenic sources in Guiyang. Furthermore, the ratio of formate/acetate in gas phase larger than 1 suggest the oxidation of unsaturated hydrocarbons from the human activity and/or natural sources were the main origin of carboxylic acids in Guiyang. While The F/A ratio in gas phase was less than 1 in Shangzhong which indicate the direct emissions from biogenic sources. Oxalic acid was in similar amounts in both sites, indicating the common source of the acid.
学科主题	Environmental Sciences ; Meteorology & Atmospheric Sciences
URL标识	查看原文
WOS关键词	WEIGHT ORGANIC-ACIDS ; ACETIC-ACIDS ; FORMIC-ACID ; ATMOSPHERIC CHEMISTRY ; SITE ; DEPOSITION ; NORTH ; WATER ; ALDEHYDES ; INDIA
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种	英语
WOS记录号	WOS:000276185400005
资助机构	National Natural Science Foundation of China [40573048]
公开日期	2011-07-05
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/3549]
专题	烟台海岸带研究所_污染过程与控制实验室
作者单位	1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China 2.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550002, Peoples R China
推荐引用方式 GB/T 7714	Xu, Gang,Lee, Xinqing,Lv, Yingchun. Urban and rural observations of carboxylic acids in rainwater in Southwest of China: the impact of urbanization[J]. JOURNAL OF ATMOSPHERIC CHEMISTRY,2009,62(3):249-260.
APA	Xu, Gang,Lee, Xinqing,&Lv, Yingchun.(2009).Urban and rural observations of carboxylic acids in rainwater in Southwest of China: the impact of urbanization.JOURNAL OF ATMOSPHERIC CHEMISTRY,62(3),249-260.
MLA	Xu, Gang,et al."Urban and rural observations of carboxylic acids in rainwater in Southwest of China: the impact of urbanization".JOURNAL OF ATMOSPHERIC CHEMISTRY 62.3(2009):249-260.