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DOI	10.1360/02wd0266
	Formate and acetate as recorded in a mid-latitude glacier in west China
	Li, XQ; Qin, DH; He, YQ; Zhang, CL; Zhou, H; Jiao, KQ
发表日期	2003
ISSN	1001-6538
起始页码	1483
结束页码	1487
卷号	48 期号:14
英文摘要	Formate and acetate are ubiquitous in the troposphere. Their occurrence is closely related to processes in the biosphere and contributes to an understanding of carbon biogeochemical cycles. A 43-year record of formate and acetate in an ice core from Glacier I (43degrees06'N, 86degrees49'E) at Urumqi river head, Tianshan, west China was investigated. Fluctuating between 22.7 ng . g(-1) and 2830.7 ng . g(-1), acetate concentration averages 373.2 +/- 376.1 ng . g(-1) (mean +/- 1sigma, N = 541) and is the highest anion in the record. Next to acetate, the concentration for formate varies between 2.1 ng . g(-1) and 795.5 ng . g(-1) and averages 61.1 +/- 89.0 ng . g(-1) (N = 541). The formate to acetate ratio averages 0.22 +/- 0.25 (N = 541), indicating that the chief source is from fossil fuel combustion, coal burning in particular. The two species co-varied in the past four decades and exhibited periods of high concentration from the early 1960s to the middle of 1970s and from the early 1980s to the middle of 1990s, separated by a time of the lower concentration between 1975-1980. These variations may reflect the local/regional anthropogenic pollution to the atmosphere as well as the economic development of northwestern China.
英文关键词	carboxylic acid; coal combustion; atmospheric pollution; cryosphere; alpine glacier; Tianshan
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
来源期刊	CHINESE SCIENCE BULLETIN
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158727
作者单位	Li, XQ (corresponding author), Lanzhou Univ, MOE, Natl Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China.
推荐引用方式 GB/T 7714	Li, XQ,Qin, DH,He, YQ,et al. Formate and acetate as recorded in a mid-latitude glacier in west China[J],2003,48(14).
APA	Li, XQ,Qin, DH,He, YQ,Zhang, CL,Zhou, H,&Jiao, KQ.(2003).Formate and acetate as recorded in a mid-latitude glacier in west China.CHINESE SCIENCE BULLETIN,48(14).
MLA	Li, XQ,et al."Formate and acetate as recorded in a mid-latitude glacier in west China".CHINESE SCIENCE BULLETIN 48.14(2003).