Cai, YB; Zhang, H
; Yuan, GD; Li, FY发表期刊APPLIED GEOCHEMISTRY
ISSN0883-2927
2017-09
卷号84页码:254-261
关键词Gold miningArsenicIronColloidModeling
研究领域Geochemistry & Geophysics
DOI10.1016/j.apgeochem.2017.07.001
产权排序[Cai, Yongbing; Li, Feiyue] Anhui Sci & Technol Univ, Coll Resource & Environm, Huainan 233100, Anhui, Peoples R China; [Cai, Yongbing; Zhang, Hua; Yuan, Guodong] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Beijing 264003, Shandong, Peoples R China
作者部门海岸带环境过程实验室
英文摘要Mining-contaminated waters may contain high levels of arsenic (As) and iron (Fe), among various metals and metalloids. The complex behavior of As makes its contamination difficult to remediate. This study aimed to determine the sources, possible association of As and Fe with colloids and their speciation and mobility in the Jiehe River, a stream impacted by gold mining. Particulate (>450 nm), colloidal (7 -450 nm), and truely dissolved (<7 nm) forms of As and Fe were determined, and the species of As [As(ill), As(V), monomethylarsonic acid, and dimethylarsinic acid] and Fe [Fe(II) and Fe(IlI)] were both analyzed and modelled using geochemical program Visual MinteQ 3.0. High concentrations of As and Fe were observed in both filtered and particulate forms in most of the water samples. Total As was in the range of 1.0-719 mu g L-1 with a median of 140 mu g L-1. Total Fe was 0.4-68.2 mg L-1 with a median of 15.0 mg L-1. Arsenic was mainly adsorbed on ferrihydrite, goethite, and hematite in the upstream water samples. In contrast, it was mostly in truely dissolved forms in the water samples at downstream. Visual MinteQ 3.0 modelling results revealed that As adsorbed on, or co-precipitated with, stream sediment can be easily released under the environmental conditions of the downstream reach (11.4-37.5 km). These findings would benefit the environmental management of gold mining impacted Jiehe River, and indicate the need for further quantitative research on As migration facilitated by Fe (hydr) oxide colloids and the release of As from contaminated stream sediments. (C) 2017 Elsevier Ltd. All rights reserved.
文章类型Article
资助机构National Natural Science Foundation of China [41271506, 41230858, 21607002]; Key Research Program of the Chinese Academy of Sciences [KZZD-EW-14]; Recruitment Program of Global Young Experts (1000Plan)
收录类别SCI
语种英语
关键词[WOS]Gold mining; Arsenic; Iron; Colloid; Modeling
研究领域[WOS]Geochemistry & Geophysics
WOS记录号WOS:000410673400020
引用统计被引频次：18[WOS][WOS记录][WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/24360
专题中科院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
中科院海岸带环境过程与生态修复重点实验室_污染过程与控制实验室
作者单位1.Anhui Sci & Technol Univ, Coll Resource & Environm, Huainan 233100, Anhui, Peoples R China;
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Beijing 264003, Shandong, Peoples R China
推荐引用方式
GB/T 7714Cai, YB,Zhang, H,Yuan, GD,et al. Sources, speciation and transformation of arsenic in the gold mining impacted Jiehe River, China[J]. APPLIED GEOCHEMISTRY,2017,84:254-261.
APACai, YB,Zhang, H,Yuan, GD,&Li, FY.(2017).Sources, speciation and transformation of arsenic in the gold mining impacted Jiehe River, China.APPLIED GEOCHEMISTRY,84,254-261.
MLACai, YB,et al."Sources, speciation and transformation of arsenic in the gold mining impacted Jiehe River, China".APPLIED GEOCHEMISTRY 84(2017):254-261.
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