Low-molecular-weight organic acids in the Tibetan Plateau: Results from one-year of precipitation samples at the SET station

doi:10.1016/j.atmosenv.2013.12.028

	Low-molecular-weight organic acids in the Tibetan Plateau: Results from one-year of precipitation samples at the SET station
	Liu, Bin 1,2; Kang, Shichang 1,3,4; Sun, Jimin 2; Wan, Xin 1; Wang, Yongjie 1; Gao, Shaopeng 1; Cong, Zhiyuan 1
刊名	ATMOSPHERIC ENVIRONMENT
	2014-04-01
卷号	86 页码:68-73
关键词	Organic acids Precipitation chemistry Tibetan Plateau Monsoon
ISSN号	1352-2310
DOI	10.1016/j.atmosenv.2013.12.028
文献子类	Article
英文摘要	Background atmospheric organic acids: formic (F), acetic (A), oxalic (O), and methanesulfonic (MSA, abbreviated to M) acids in the southern Tibetan Plateau (TP), were determined in one-year of precipitation measurements at a remote alpine station. These organic acids were dominated by oxalic (volume-weighted mean of 0.51 mu mol l(-1))/formic acid (0.38 mu mol l(-1)), followed by acetic acid (0.20 mu mol l(-1)) and MSA (0.10 mu mol l(-1)). Their levels were comparable with those from other remote sites, while they were lower than those found in populated areas. The South Asian monsoon is responsible for the seasonal variation of organic acid concentration: a relative abundance of MSA and lower concentrations of other organic acids (by the dilution effect) in the monsoon season, while opposite in the non-monsoon season. Diverse sources were identified by principal component analysis combined with the corresponding tracers. These were anthropogenic disturbances (which explain 41% of the variance), marine emission (24%), and biogenic emission (16%). Moreover, the variances of F/A, M/(F + A), and O/(F + A) in monsoonal versus non-monsoonal samples, were involved with the changes of sources. Furthermore, these chemical indexes suggest that active photochemistry over the TP was significant for the production of organic acids and consequently enhanced the ratios of M/(F + A) and O/(F + A) in monsoonal rainfalls. The elevated organic compounds within the ascending tropical moisture imply potential significances for the secondary formation of organic acids in the high-altitude and the changes of the Asian monsoon. (C) 2013 Elsevier Ltd. All rights reserved.
WOS关键词	C-1-C-10 MONOCARBOXYLIC ACIDS ; DICARBOXYLIC-ACIDS ; WET DEPOSITION ; ICE CORE ; CHEMICAL CHARACTERISTICS ; ATMOSPHERIC PARTICLES ; KETOCARBOXYLIC ACIDS ; RAINWATER CHEMISTRY ; SEASONAL-VARIATIONS ; ALPHA-DICARBONYLS
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000332143100008
资助机构	National Natural Science Foundation of China(41075089 ; National Natural Science Foundation of China(41075089 ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Strategic Priority Research Program-Climate Change: Carbon Budget and Relevant Issues, CAS(XDA05100105) ; Strategic Priority Research Program-Climate Change: Carbon Budget and Relevant Issues, CAS(XDA05100105) ; 41225002) ; 41225002) ; National Natural Science Foundation of China(41075089 ; National Natural Science Foundation of China(41075089 ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Strategic Priority Research Program-Climate Change: Carbon Budget and Relevant Issues, CAS(XDA05100105) ; Strategic Priority Research Program-Climate Change: Carbon Budget and Relevant Issues, CAS(XDA05100105) ; 41225002) ; 41225002) ; National Natural Science Foundation of China(41075089 ; National Natural Science Foundation of China(41075089 ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Strategic Priority Research Program-Climate Change: Carbon Budget and Relevant Issues, CAS(XDA05100105) ; Strategic Priority Research Program-Climate Change: Carbon Budget and Relevant Issues, CAS(XDA05100105) ; 41225002) ; 41225002) ; National Natural Science Foundation of China(41075089 ; National Natural Science Foundation of China(41075089 ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; Strategic Priority Research Program-Climate Change: Carbon Budget and Relevant Issues, CAS(XDA05100105) ; Strategic Priority Research Program-Climate Change: Carbon Budget and Relevant Issues, CAS(XDA05100105) ; 41225002) ; 41225002)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/85465]
专题	中国科学院地质与地球物理研究所
通讯作者	Cong, Zhiyuan
作者单位	1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100085, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China 3.Chinese Acad Sci, State Key Lab Cryospher Sci Cold & Arid Reg Envir, Lanzhou 730000, Peoples R China 4.Chinese Acad Sci, Engn Res Inst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Liu, Bin,Kang, Shichang,Sun, Jimin,et al. Low-molecular-weight organic acids in the Tibetan Plateau: Results from one-year of precipitation samples at the SET station[J]. ATMOSPHERIC ENVIRONMENT,2014,86:68-73.
APA	Liu, Bin.,Kang, Shichang.,Sun, Jimin.,Wan, Xin.,Wang, Yongjie.,...&Cong, Zhiyuan.(2014).Low-molecular-weight organic acids in the Tibetan Plateau: Results from one-year of precipitation samples at the SET station.ATMOSPHERIC ENVIRONMENT,86,68-73.
MLA	Liu, Bin,et al."Low-molecular-weight organic acids in the Tibetan Plateau: Results from one-year of precipitation samples at the SET station".ATMOSPHERIC ENVIRONMENT 86(2014):68-73.