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	Tropospheric pyruvate changes in the remote area of northwestern China
	Lee Xinqing; Qin Dahe; Jiang Wei; Jiang Qian
发表日期	2005
ISSN	2096-0956
起始页码	CP3
结束页码	207
卷号	24 期号:3
英文摘要	Pyruvate is a light carboxylate in the troposphere and can act as potential cloud condensation nuclei. Due to its low concentrations, however, litde work has been done on the species in precipitation. Past 43-year record of pyruvate was recovered from an ice core of Glacier 1 at 43 degrees 06'N and 86 degrees degrees 49'E in the remote East Tianshan, northwestern China. It was revealed that pyruvate varied over a relatively large range with some below the detection limit, while part of it is so high as to be up to 70 ng . g(-l). With an average concentration of 4.1 +/- 8.1 ng . g(-1) ( mean +/- l sigma, N = 543), pyruvate is a minor species in comparison with other carboxylates. It is also low as compared with its precipitation in other parts of the world, suggesting a difference in its major source flux. The record revealed high pyrnvate concentrations in the late halves of the 1950s and 1980s, but low in the late 1950s, late 1970s, and middle 1990s. The variation trend in the past 43 years is closely correlated with that of acetate, a major carboxylate from anthropogenic pollution to the atmosphere, indicating that tropospheric pyrnvate in the remote area of north-western China is probably a by-product in acetate formation.
英文关键词	atmosphericc hemistry; organic acid; carboxylate; environment pollution; precipitation
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
来源期刊	ACTA GEOCHIMICA
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158703
作者单位	Lee, XQ (corresponding author), Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550002, Peoples R China.
推荐引用方式 GB/T 7714	Lee Xinqing,Qin Dahe,Jiang Wei,et al. Tropospheric pyruvate changes in the remote area of northwestern China[J],2005,24(3).
APA	Lee Xinqing,Qin Dahe,Jiang Wei,&Jiang Qian.(2005).Tropospheric pyruvate changes in the remote area of northwestern China.ACTA GEOCHIMICA,24(3).
MLA	Lee Xinqing,et al."Tropospheric pyruvate changes in the remote area of northwestern China".ACTA GEOCHIMICA 24.3(2005).