文献类型：期刊文献

英文题名：Weir building: A potential cost-effective method for reducing mercury leaching from abandoned mining tailings

作者：Xu, Xiaohang Gu, Chunhao Feng, Xinbin Qiu, Guangle Shang, Lihai Xu, Zhidong Lu, Qinhui Xiao, Dean Wang, Heng Lin, Yan Larssen, Thorjorn

第一作者：Xu, Xiaohang

通信作者：Shang, LH[1];Lin, Y[2]

机构：[1]Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, 99 Lincheng West Rd, Guiyang 550081, Guizhou, Peoples R China;[2]Univ Chinese Acad Sci, Beijing 100049, Peoples R China;[3]Guizhou Inst Technol, Guiyang 550003, Guizhou, Peoples R China;[4]Guizhou Univ Finance & Econ, Guiyang 550025, Guizhou, Peoples R China;[5]Yangtze Univ, Coll Resources & Environm, Wuhan 430100, Hubei, Peoples R China;[6]Norwegian Inst Water Res, Gaustadalleen 21, N-0349 Oslo, Norway

第一机构：Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, 99 Lincheng West Rd, Guiyang 550081, Guizhou, Peoples R China

通信机构：corresponding author), Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, 99 Lincheng West Rd, Guiyang 550081, Guizhou, Peoples R China;corresponding author), Yangtze Univ, Coll Resources & Environm, Wuhan 430100, Hubei, Peoples R China.

年份：2019

卷号：651

起止页码：171-178

外文期刊名：SCIENCE OF THE TOTAL ENVIRONMENT

收录：;EI(收录号：20183805839284);Scopus(收录号：2-s2.0-85053369945);WOS:【SCI-EXPANDED(收录号:WOS:000447915400018)】；

基金：The authors wished to thank Jonas Sommar for his constructive comments, which greatly improved the manuscript. This study was supported the Sino-Norwegian Cooperative Project (SINOMER II and III), the Sino-Swedish Cooperation Project (SMaReF), National Natural Science Foundation of China (41573135, 41877405), the Opening Fund of the State Key Laboratory of Environmental Geochemistry (SKLEG2017915), and Guizhou Science and Technology Department Fund (2015-2029).

语种：英文

外文关键词：Stream water mercury speciation; Weir construction; Mercury retention; Cost benefit analysis

摘要：To mitigate mercury (Hg) pollution and reduce Hg downstream transportation, a weir was designed by a river system that had been inflicted by leachate from the slagheap of the Yanwuping Hg mine in Wanshan Hgmining area. A whole yearmonitoring of Hg species was conducted, and the efficiency of Hg reduction by the weir application was evaluated. The Hg concentrations in the river waterwere significantly higher in the wet season than in the dry season. Waterflow was confirmed to be the main driving factor for Hg mobilization and transportation, and an episode study revealed that most Hg was released in times of storms. Increased monitoring and preventive maintenance measures need to be taken on barriers in advance of storms. A large proportion of the total Hg (THg) and methylmercury (MeHg) is associated to particles. During the study period, approximately 412 g THg and 4.04 g total MeHg (TMeHg) were released from the YMM slagheap, of which 167 g THg and 1.15 g TMeHg were retained by the weir. Annually, 40.4% THg and 38.4% TMeHg was retained by the weir. Weir construction is considered as a potential cost-effective measure tomitigate Hg in riverwater and should be promoted and extended in the future after optimization. (C) 2018 Elsevier B.V. All rights reserved.