文献类型：期刊文献

英文题名：Characterization of mercury concentrations in snow and potential sources, Shanghai, China

作者：Zhang, Yanyan[1];Xiu, Guangli[1];Wu, Xuefang[2];Moore, Christopher W.[3];Wang, Jiajia[1];Cai, Ji[1];Zhang, Danian[1];Shi, Chaoou[4];Zhang, Renjian[5]

机构：[1]E China Univ Sci & Technol, State Environm Protect Key Lab Envirnom Risk Asse, Shanghai 200237, Peoples R China;[2]China Acad Environm Sci, Inst Environm Stand, Beijing 100012, Peoples R China;[3]Desert Res Inst, Div Atmospher Sci, Reno, NV 89512 USA;[4]E China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[5]Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 10029, Peoples R China

年份：2013

卷号：449

起止页码：434

外文期刊名：SCIENCE OF THE TOTAL ENVIRONMENT

收录：;EI(收录号：20131016084051);WOS:【SCI-EXPANDED(收录号:WOS:000317538200050)】；

基金：The authors would like to thank all group members for assistance of snow sampling. Thank Dr. Lina Wang, from Queensland University of Technology, Australia for grammar check. Thanks very much for the combined financial support of the Natural Science Foundation of Shanghai (grant no. 08ZR1406400), the Fundamental Research Funds for the Central Universities (WB1113005), Qinghai Natural Science Foundation (2011-Z-903), Innovation Program of Shanghai Municipal Education Commission (12ZZ054), Shanghai Excellent Young University Teacher Program and Open Foundation of LAPC, Institute of Atmospheric Physics, Chinese Academy of Sciences (LAPC-KF-2008-13).

语种：英文

外文关键词：Mercury; Major soluble ions; pH; Source; Shanghai

摘要：This work focused on quantifying the total mercury (Hg-T) and major ion concentrations in snow samples to understand the importance of this pathway and sources of Hg deposited in Shanghai, China. Rare snow event samples were collected at 26 sites within the city of Shanghai on February 18, 2006, January 27, 2008 and January 20, 2011. The sites were distributed among four main functional area types (i.e., industrial impacted, residential impacted, traffic impacted sites and sites in the city center). Concentrations of HgT and major soluble ions, and pH values were determined for each site. Mean Hg-T concentrations for all sites were 78 52 ng L-1, 277 184 ng L-1, 189 123 ng L-1 in 2006, 2008 and 2011, respectively. Values were higher in Shanghai than observed in other cities including Beijing which has a smaller population and is less industrial. Principle component analysis (PCA) indicated that secondary aerosols (SO42-, NO3- and NH4+), and biomass combustion (K+, CH3COO-, and HCOO-) were best related to mercury concentrations in the snow in 2008 and 2011. Although HYSPLIT back trajectory modeling indicated air mass transport from areas with significant coal combustion, results indicate that anthropogenic pollution from within Shanghai was the predominant source of Hg in snow. (C) 2013 Elsevier B.V. All rights reserved.