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《Journal of Glaciolgy and Geocryology》 2001-01
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Determination of Organic Acids in Snow and Ice from Mountain Glaciers

LI Xin qing (LEE Xin qing), QIN Da he, ZHOU Hui (Laboratory of Ice Core and Cold Regions Environment, CAREERI, CAS, Lanzhou Gansu 730000, China)  
Organic acids are major chemical species in acidic precipitation. This is especially true for light carboxylic acids in precipitation in remote areas. Thus, they play a significant part in acidification of environment. Because organic acids are closely related to the biosphere in terms of their sources, their records in snow and ice provide ways for learning changes of paleoenvironment and paleoecosystem, as well as biogeochemical cycles of C, H, O or S. However, they are very difficult to determine for their trace concentration and susceptibility to contamination. For samples from a specific place and with a specific Ion Chromatography (IC), use of the conventional instrument must take into consideration the following aspect: 1) The IC used should have advanced pump system that enables gradient elution; 2) Pre concentrator columns and anion trap columns should be added to the system; 3) The gradient elution should eluent and separate both organic and inorganic anions present in a sample in a single run; 4) Weak chemical reagent should be used for separation of monovalent analyses with similar affinity. Accordingly, a method for determining organic acids together with inorganic anions in snow and ice from mountain glaciers is provided in this paper. Based on a DX300 Ion chromatography, the method uses AS4ASC and AG4ASC as separator and guard column, respectively, TAC2 as a concentrator column, which is installed in place of sample loop, and ATC1 as a contaminant trap column that is installed before injection valve. ASRSⅡ suppressor column and chemical suppression mode is employed. The suppression solution is 25 mM H 2 SO 4 with a flow rate of 5 mL·min -1 . The eluent is prepared from Na 2 B 4 O 7 ·10H 2 O in 18 2 MΩ water. In order to analyze like species Fluoride, Acetate, Formate, Pyruvate and Methanefulfonate that are closely related in affinity thus prone to be co eluented, and to separate and quantitate in the same run all anions present in samples, gradient elution is adopted with a constant eluent rate of 2 00 mL·min -1 . In the first 6 min, the eluent is kept in 2.0 mM for elution of F - , monovalent organic acids and Pyruvate; in the next 5 min, the concentration increases from 2 mm to 31 5 mm for elution and separation of Cl - , NO - 2, Br - , NO - 3 and PO 3- 4; and in the last 3 min, the eluent is hold at 31.5 mM until SO 2- 4 and (CO) 2- 2 is eluented. The method resolves and quantitates in a single run over 10 analyses both organic and inorganic species from Fluoride, Acetate to Phosphate, Sulfide and finally Oxalate. The relative standard errors for some anions are: 2 0% for Fluoride, 4.5% for Acetate, 2.0% for Formate, 16.9% for Methanesulfonate, 3 1% for Chloride, 3 9% for Nitrite, 2 2% for Nitrate, 4 9% for Bromide and 2 4% for Sulfate.
【Fund】: 中国科学院“九五”重大项目!(KZ95 1 Al 40 20 3);; 国家自然科学基金项目!(498710 2 2 40 0 730 35 );; 中国科学院寒区旱区环境与工
【CateGory Index】: O622
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【References】
Chinese Journal Full-text Database 5 Hits
1 LI Xin qing(LEE Xinqing) 1, 2 , QIN Da he 1, REN Jia wen 2 (1. Laboratory of Ice Core and Cold Regions Environment, CAREERI, CAS, Lanzhou Gansu 730000, China; 2. National Laboratory of Western China's Environmental Systems, Lanzhou Univers;Biogeochemistry of Organic Acids in Snow and Ice: A Review[J];Journal of Glaciolgy and Geocryology;2001-04
2 CUI Xiao-qing,REN Jia-wen,LIU Wei-gang,WANG Xiao-xiang (Key Laboratory of Cryosphere and environment,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou Gansu 730000,China);Organic Acid in Snow and Ice Determined with Gradient Elution[J];Journal of Glaciology and Geocryology;2006-03
3 DING Wen-ci1,2,LI Xin-qing1,LI Zhong-qin3,WANG Fei-teng2,3(1.State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,CAS,Guizhou Guiyang 550002,China;2.Graduate University of Chinese Academy of Sciences,Beijing 10004,China; 3.Tianshan Glaciological Station and State Key Laboratory of Cryospheric Science,CAREERI,CAS,Lanzhou Gansu 730000,China);Chemical Characteristics of the Surface Snow on Glacier No.1 at the rümqi River Head:Organic Acids and Inorganic Anions[J];Journal of Glaciology and Geocryology;2007-05
4 LI Xin-qing(Lee, Xin-qing)~(1,2), QIN Da-he~2, JIANG Qian~1, JIANG Wei~1, JIAO Ke-qin~2 (1. State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, CAS, Guiyang 550002, China; (2. 2. Laboratory of Ice Core and Cold Region’s Environment, Institute of Cold and Arid Region's Environmental and Engineering Research, CAS, Lanzhou 730000, China);CHANGES IN ATMOSPHERIC CHEMISTRY AS REVEALED BY OXALATE RECORD IN THE ICE CORE OF GLACIER 1, TIANSHAN, CHINA[J];Geology-geochemistry;2005-01
5 KANG Chun-li,GAO Hong-jie,GUO Ping,TANG Xiao-jian,LIU Xing-juan(College of Environment and Resources,Jilin University,Changchun 130023,P.R.China);Progress in the Studies of Organic Pollutants in Snow and Ice[J];Science Technology and Engineering;2008-02
【Citations】
Chinese Journal Full-text Database 3 Hits
1 LI Xin-qing(Lee Xinqing);QIN Da-he; REN Jia-wen; ZHOU Hui (Laboratory of Ice Core and Cold Regions Environment. Cold and Arid Regions Environmental and Engineering Research Institute , CAS , Lanzhou Gansu 730000, China);Contamination of Acetic and Formic Acids in Water and its Implications for the Study of Carboxylic Acids in Show and Ice[J];JOURNAL OF GLACIOLGY AND GEOCRYOLOGY;2000-01
2 LI Xin-qing(LEE Xinqing), QIN Da-he, REN Jia-wen, ZHOU Hui (Laboratory of Ice Core and Cord Regions Environment, CAREERI, CAS, Lanzhou Gansu 730000 China);Organic Acids: A Review for Their Sources and Measurements[J];JOURNAL OF GLACIOLGY AND GEOCRYOLOGY;2000-03
3 Wang Meirong (Peking University, Beijing, 100871);CHEMISTRY OF ACID DEPOSITION ON THE MOUNTAINS IN SOUTH CHINA DURING SPRING[J];Acta Scientiae Circumstantiae;1992-01
【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 LI Xin-qing(Lee Xinqing);QIN Da-he; REN Jia-wen; ZHOU Hui (Laboratory of Ice Core and Cold Regions Environment. Cold and Arid Regions Environmental and Engineering Research Institute , CAS , Lanzhou Gansu 730000, China);Contamination of Acetic and Formic Acids in Water and its Implications for the Study of Carboxylic Acids in Show and Ice[J];JOURNAL OF GLACIOLGY AND GEOCRYOLOGY;2000-01
2 LI Xin-qing(LEE Xinqing), QIN Da-he, REN Jia-wen, ZHOU Hui (Laboratory of Ice Core and Cord Regions Environment, CAREERI, CAS, Lanzhou Gansu 730000 China);Organic Acids: A Review for Their Sources and Measurements[J];JOURNAL OF GLACIOLGY AND GEOCRYOLOGY;2000-03
3 HOU Shu gui (Laboratory of Ice Core and Cold Regions Environment, CAREERI, CAS, Lanzhou Gansu 730000, China);Chemical Characteristics of Precipitation at the Headwaters of the rümqi River in the Tianshan Mountains[J];Journal of Glaciolgy and Geocryology;2001-01
4 LI Xin qing(LEE Xinqing) 1, 2 , QIN Da he 1, REN Jia wen 2 (1. Laboratory of Ice Core and Cold Regions Environment, CAREERI, CAS, Lanzhou Gansu 730000, China; 2. National Laboratory of Western China's Environmental Systems, Lanzhou Univers;Biogeochemistry of Organic Acids in Snow and Ice: A Review[J];Journal of Glaciolgy and Geocryology;2001-04
5 WANG Jun-xia, YAO Tan-dong (Key Laboratory of Ice Core and Cold Regions Environment, CAREERI, CAS, Lanzhou Gansu 730000, China);Review of Methanesulphonate in Ice Cores[J];Journal of Glaciology and Geocryology;2003-04
6 CUI Xiao-qing,REN Jia-wen,LIU Wei-gang,WANG Xiao-xiang (Key Laboratory of Cryosphere and environment,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou Gansu 730000,China);Organic Acid in Snow and Ice Determined with Gradient Elution[J];Journal of Glaciology and Geocryology;2006-03
7 Ren Ren; Mi Fengjie (College of Environment and Energy Engineering, Beijing Polytechnic University, Beijing, 100022 ) Bai Naibin (Research Center for Eco-environmental Sciences, CAS, Beijing, 100085 );A Chemometrics Analysis on the Data of Precipitation Chemistry of China[J];JOURNAL OF BEIJING POLYTECHNIC UNIVERSITY;2000-02
8 YAN Wei jin 1, ZHANG Shen 1, WANG Jia hui 2 (1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;2. Geology University of China,Beijing 100083, China);Nitrogen Biogeochemical Cycling in the Changjiang Drainage Basin and its Effect on Changjiang River Dissolved Inorganic Nitrogen: Temporal Trend for the Period 1968~1997[J];Acta Geographica Sinica;2001-05
9 XU Gang1,2,LEE Xin-qing1,HUANG Rong-sheng1,LIAO Li3(1.State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,Chinese of Academy of Sciences, Guiyang 550002,China;2.The Graduate Universty,Chinese of Academy of Sciences,Beijing 100039,China;3.Guizhou Academe of Land & Resources Surveying and Programming,Guiyang 550004,China);LOW MOLECULAR CARBOXYLIC ACIDS IN PRECIPITATION OF GUIYANG,SOUTHWEST CHINA[J];Earth and Environment;2007-01
10 LEE Xin-qing, HUANG Dai-kuan, DING Wen-ci, XU Gang, JIANG Wei(The State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China);RESEARCH ON TROPOSPHERIC LOW MOLECULAR CARBOXYLIC ACIDS:ADVANCEMENT AND PROBLEMS[J];Earth and Environment;2008-01
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8 LI Xin qing(LEE Xinqing) 1, 2 , QIN Da he 1, REN Jia wen 2 (1. Laboratory of Ice Core and Cold Regions Environment, CAREERI, CAS, Lanzhou Gansu 730000, China; 2. National Laboratory of Western China's Environmental Systems, Lanzhou Univers;Biogeochemistry of Organic Acids in Snow and Ice: A Review[J];Journal of Glaciolgy and Geocryology;2001-04
9 ZHANG Zhong-lin~(1, 2), HE Yuan-qing~1, PANG Hong-xi~1, LU Ai-gang~1, GU Juan~1(1. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou Gansu 730000, China;2. College of Information and Electrical Engineering, Lanzhou Jiaotong University, Lanzhou Gansu 730070, China);Accumulation and Moisture Sources of the Glaciers in China[J];Journal of Glaciology and Geocryology;2004-06
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