Changes in precipitating snow chemistry with seasonality in the remote Laohugou glacier basin, western Qilian Mountains

被引：32
作者：
Dong, Zhiwen [1 ]
Qin, Dahe [1 ]
Qin, Xiang [1 ,2 ]
Cui, Jianyong [3 ]
Kang, Shichang [1 ]
机构：
[1] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryosphere Sci, Lanzhou 730000, Peoples R China
[2] Chinese Acad Sci, Qilian Mt Glacier & Ecol Environm Res Stn, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China
[3] Beijing Res Inst Uranium Geol, Analyt Lab, Beijing 100029, Peoples R China
来源：
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2017年 / 24卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Tracemetals; Glacier basin; Precipitation chemistry; TEM-EDX residue; TRACE-ELEMENTS; WET DEPOSITION; HEAVY-METALS; ICE CORES; DUST; PARTICLES; HIMALAYAS; AEROSOLS; EVEREST; RECORD;
D O I：
10.1007/s11356-017-8778-y
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Trace elements in the atmosphere could provide information about regional atmospheric pollution. This study presented a whole year of precipitation observation data regarding the concentrations of trace metals (e.g., Cr, Ni, Cu, Mn, Cd, Mo, Pb, Sb, Ti, and Zn), and a TEM-EDX (transmission electron microscope-energy dispersive X-ray spectrometer) analysis from June 2014 to September 2015 at a remote alpine glacier basin in Northwest China, the Laohugou (LHG) basin (4200 m a.s.l.), to determine the regional scale of atmospheric conditions and chemical processing in the free troposphere in the region. The results of the concentrations of trace metals showed that, although the concentrations generally were lower compared with that of surrounding rural areas (and cities), they showed an obviously higher concentration and higher EFs in winter (DJF) and a relatively lower concentration and lower EFs in summer (JJA) and autumn (SON), implying clearly enhanced winter pollution of the regional atmosphere in Northwest China. The TEM observed residue in precipitation that was mainly composed of types of dust, salt-dust, BC-fly ash-soot, and organic particles in precipitation, which also showed remarked seasonal change, showing an especially high ratio of BC-soot-fly ash particles in winter precipitation compared with that of other seasons (while organic particles were higher in the summer), indicating significant increased anthropogenic particles in the winter atmosphere. The source of increased winter anthropogenic pollutants mainly originated from emissions from coal combustion, e.g., the regional winter heating supply for residents and cement factories in urban and rural regions of Northwest China. Moderate Resolution Imaging Spectroradiometer (MODIS) atmospheric optical depth (AOD) also showed a significant influence of regional atmospheric pollutant emissions over the region in winter. In total, this work indicated that the atmospheric environment in western Qilian Mountains also showed enhanced anthropogenic pollution in winter, probably mainly caused by regional fossil fuel combustion.
引用
收藏
页码：11404 / 11414
页数：11
相关论文
共 29 条
[1]   Trace elements in atmospheric precipitation at Northern Jordan measured by ICP-MS: acidity and possible sources [J].
Al-Momani, IF .
ATMOSPHERIC ENVIRONMENT, 2003, 37 (32) :4507-4515
[2]   Historical record of European emissions of heavy metals to the atmosphere since the 1650s from Alpine snow/ice cores drilled near Monte Rosa [J].
Barbante, C ;
Schwikowski, M ;
Döring, T ;
Gäggeler, HW ;
Schotterer, U ;
Tobler, L ;
Van De Velde, K ;
Ferrari, C ;
Cozzi, G ;
Turetta, A ;
Rosman, K ;
Bolshov, M ;
Capodaglio, G ;
Cescon, P ;
Boutron, C .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2004, 38 (15) :4085-4090
[3]   GREENLAND SNOW AND ICE CORES - UNIQUE ARCHIVES OF LARGE-SCALE POLLUTION OF THE TROPOSPHERE OF THE NORTHERN-HEMISPHERE BY LEAD AND OTHER HEAVY-METALS [J].
BOUTRON, CF ;
CANDELONE, JP ;
HONG, SM .
SCIENCE OF THE TOTAL ENVIRONMENT, 1995, 160-61 :233-241
[4]   Atmospheric wet deposition of trace elements to central Tibetan Plateau [J].
Cong, Zhiyuan ;
Kang, Shichang ;
Zhang, Yulan ;
Li, Xiangdong .
APPLIED GEOCHEMISTRY, 2010, 25 (09) :1415-1421
[5]   Dust and Biological Aerosols from the Sahara and Asia Influence Precipitation in the Western U.S. [J].
Creamean, Jessie M. ;
Suski, Kaitlyn J. ;
Rosenfeld, Daniel ;
Cazorla, Alberto ;
DeMott, Paul J. ;
Sullivan, Ryan C. ;
White, Allen B. ;
Ralph, F. Martin ;
Minnis, Patrick ;
Comstock, Jennifer M. ;
Tomlinson, Jason M. ;
Prather, Kimberly A. .
SCIENCE, 2013, 339 (6127) :1572-1578
[6]   Composition and mixing states of brown haze particle over the Himalayas along two transboundary south-north transects [J].
Dong, Zhiwen ;
Kang, Shichang ;
Guo, Junming ;
Zhang, Qianggong ;
Wang, Xuejia ;
Qin, Dahe .
ATMOSPHERIC ENVIRONMENT, 2017, 156 :24-35
[7]   Individual particles of cryoconite deposited on the mountain glaciers of the Tibetan Plateau: Insights into chemical composition and sources [J].
Dong, Zhiwen ;
Qin, Dahe ;
Kang, Shichang ;
Liu, Yajun ;
Li, Yang ;
Huang, Jie ;
Qin, Xiang .
ATMOSPHERIC ENVIRONMENT, 2016, 138 :114-124
[8]   Physicochemical impacts of dust particles on alpine glacier meltwater at the Laohugou Glacier basin in western Qilian Mountains, China [J].
Dong, Zhiwen ;
Qin, Dahe ;
Chen, Jizu ;
Qin, Xiang ;
Ren, Jiawen ;
Cui, Xiaoqing ;
Du, Zhiheng ;
Kang, Shichang .
SCIENCE OF THE TOTAL ENVIRONMENT, 2014, 493 :930-942
[9]   Physicochemical characteristics and sources of atmospheric dust deposition in snow packs on the glaciers of western Qilian Mountains, China [J].
Dong, Zhiwen ;
Qin, Dahe ;
Kang, Shichang ;
Ren, Jiawen ;
Chen, Jizu ;
Cui, Xiaoqing ;
Du, Zhiheng ;
Qin, Xiang .
TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY, 2014, 66
[10]   Characteristics of atmospheric dust deposition in snow on the glaciers of the eastern Tien Shan, China [J].
Dong, Zhiwen ;
Li, Zhongqin ;
Wang, Feiteng ;
Zhang, Mingjun .
JOURNAL OF GLACIOLOGY, 2009, 55 (193) :797-804
123