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DOI	10.1016/S0165-232X(01)00066-0
	Determination of light carboxylic acids in snow and ice from mountain glaciers
	Lee, XQ; Qin, DH; Jiang, GB; Zhou, H
发表日期	2002
ISSN	0165-232X
起始页码	127
结束页码	134
卷号	34 期号:2
英文摘要	Light carboxylic acids are major chemical species in acidic precipitation, particularly in remote areas. They play a significant part in the acidification of the environment. Because the organic acids relate closely to the biosphere in the source, their records in snow and ice provide insight into the changes of paleoenvironment and biogeochemical cycles of C, H, O and S. However, the trace concentration of the acids plus their susceptibility to contamination and the exclusiveness of an analytical procedure to a specific instrument make the determination difficult. With DX-300 ion chromatography (IC), we developed a method with AS4A-SC as a separator, TAC-2 as a pre-concentrator installed in place of the sample loop, ATC-1 as an impurity trap installed before the injection valve, and ASRS-II as the suppressor that is regenerated in 25 mM H2SO4. Using gradient elution and Na2B4O7 solution as the eluent, the method resolves and quantitates within a single run of 14 min over 10 analytes from F-, CH3COO- to PO42-, SO42- and finally to (COO)(2)(2-). The relative errors for the anions are: F-, 2.6%; CH3COO-, 4%; HCOO-, 2%; CH3COCOO2-, 6%; methane sulfonate (MSA), 16.8%; Cl-, 3%; NO2-, 4%; NO3-, 2%; Br-, 4.5%; SO42-,2%; and (COO)(2)(2-), 5.8%. (C) 2002 Elsevier Science B.V. All rights reserved.
英文关键词	carboxylic acids; precipitation; glaciers; ice core; ion chromatography
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
来源期刊	COLD REGIONS SCIENCE AND TECHNOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158740
作者单位	Lee, XQ (corresponding author), Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550002, Guizhou, Peoples R China.
推荐引用方式 GB/T 7714	Lee, XQ,Qin, DH,Jiang, GB,et al. Determination of light carboxylic acids in snow and ice from mountain glaciers[J],2002,34(2).
APA	Lee, XQ,Qin, DH,Jiang, GB,&Zhou, H.(2002).Determination of light carboxylic acids in snow and ice from mountain glaciers.COLD REGIONS SCIENCE AND TECHNOLOGY,34(2).
MLA	Lee, XQ,et al."Determination of light carboxylic acids in snow and ice from mountain glaciers".COLD REGIONS SCIENCE AND TECHNOLOGY 34.2(2002).