Anthropogenic Sulfate and Nitrate Signals in Snow from Bogda Glacier, Eastern Tianshan

作     者：张晓宇 Ross Edwards 

作者机构：State Key Laboratory of Cryospheric Sciences/Tianshan Glaciological Station Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Graduate University of Chinese Academy of Sciences Desert Research Institute Reno NV 89512-1095 USA Curtin University of Technology Bentley WA6102 Australia 

出 版 物：《Journal of Earth Science》 (地球科学学刊（英文版）)

年 卷 期：2011年第22卷第4期

页      面：490-502页

核心收录：

学科分类：07[理学] 0705[理学-地理学] 070501[理学-自然地理学] 

基　　金：supported by the National Basic Research Program of China (No. 2010CB951003) the Knowledge Innovation Project of the Chinese Academy of Sciences (No. KZCX2-EW-311) the program for New Century Excellent Talents in University (NCET-10-0019) the Fund of SKLCS (No. SKLCS-ZZ-2010-04) 

主　　题：anthropogenic pollutions SO42- NO3. 

摘      要：A 1.2 m snow pit was recovered on July 29th, 2009 from the Bogda Glacier, eastern Tianshan （天山）. The sample site temperature of -9.6 12 indicates that the unique glaciochemical re- cord was well preserved and suitable for the reconstruction of air pollution levels in this previously un- explored region. Samples were analyzed for major ions （Na＋, K＋, Ca2＋, Mg2＋, NH4＋, Cl-, SO42-, NO3-, HCOO＇, and CHaCOO）. NO3 and SO42were characterized by significant high levels of pollution con- centration. Most air masses backward trajectories ending in December 2008 have passed the Urumqi City center, while some even traveled across the primary nuclear weapons testing venue of the former Soviet Union （STS）. The mean pH value of snow samples is coincident with the average value of Urumqi＇s aerosol, and the ratio of [NO3-]/[SO42-] in the snow pit generally agrees with the value of the Urumqi winter aerosols. In addition, the [HCOO]/[CH3COO] ratio of snow samples is only 0.7, lower than unity. These analyses indicate that SO42 and NO3in the Bogda Glacier are the result of anthropo- genic pollutions.