Organic acids:Differences in ice core records between Glacier 1,Tianshan,China and the polar areas  

作　　者：Xinqing Li Dahe Qin Hui Zhou 

机构地区：[1]Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lab Ice Core & Cold Reg Environm, Lanzhou 730000, Peoples R China

出　　处：《Chinese Science Bulletin》2001年第1期80-83,共4页

基　　金：This study was jointly supported by the National Natural Science Foundation of China (Grant No. 49871022); the Chinese Academy of Sciences (Grant No. KZ951-A1-402-03)llTianshan Gla-ciological Station and the Chinese Postdoctoral Research Foundation.

摘　　要：Formate (HCOO-), acetate (CH3COO-), oxalate (C2O42-) and pyruvate ((CO)C2O42-) are detected in a 14.08-m-long ice core recovered in Glacier 1 at the Urumqi riverhead, Tianshan, China, which is a mid-latitude alpine glacier (43°06′N, 86°49′E). the mean concentrations for the four organic acids in recent four decades are (102.8±147.3), (392.3±390.8), (6.9(+14.8) and (4.2±8.3) ng/g, respectively, with the ratio for HCOO-/CH3COO- of 0.34± 0.43. They represent the major acid components, and originate mainly from anthropogenic emission in the nearby industrial cities. Compared with Greenland and Antarctica, Glacier 1 is much higher in carboxylic acids, which were not subjected to long distance transportation as well as complicated atmospheric reactions. The alpine glacier can be, therefore, useful to reconstructing human pollution scenario to the regional atmosphere.Formate (HCOO?), acetate (CH3COO?), oxalate (C2O42?) and pyruvate ((CO2O42?) are detected in a 14.08-m-long ice core recovered in Glacier 1 at the Urumqi riverhead, Tianshan, China, which is a mid-latitude alpine glacier (43°06′N, 86°49′E). the mean concentrations for the four organic acids in recent four decades are (102.8 ± 147.3), (392.3±390.8), (6.9 ± 14.8) and (4.2 ± 8.3) ng/g, respectively, with the ratio for HCOO2?/CH3COO” of 0.34 ± 0.43. They represent the major acid components, and originate mainly from anthropogenic emission in the nearby industrial cities. Compared with Greenland and Antarctica, Glacier 1 is much higher in carboxylic acids, which were not subjected to long distance transportation as well as complicated atmospheric reactions. The alpine glacier can be, therefore, useful to reconstructing human pollution scenario to the regional atmosphere.

关 键 词：organic acid ALPINE GLACIER ice core atmospheric pollution GREENLAND ANTARCTICA Tianshan. 

分 类 号：P596[天文地球—地球化学]