A review of arsenic interfacial geochemistry in groundwater and the role of organic matter

被引：69

作者：

Cui, Jinli ^{[1
]}

Jing, Chuanyong ^{[2
,3
]}

机构：

[1] Guangzhou Univ, Sch Environm Sci & Engn, Key Lab Water Qual & Conservat Pearl River Delta, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China

[2] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China

[3] Shandong Univ, Sch Environm Sci & Engn, Qingdao 266237, Shandong, Peoples R China

来源：

ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY | 2019年 / 183卷

基金：

中国国家自然科学基金;

关键词：

Arsenic geochemistry; Aquifer-sediment system; Organic matter; Molecular surface complexation; Contents; TERNARY COMPLEX-FORMATION; RED-RIVER FLOODPLAIN; AQUIFER SEDIMENTS; HETAO BASIN; AS(III) OXIDATION; CONTAMINATED GROUNDWATER; MINERAL TRANSFORMATION; COMPETITIVE ADSORPTION; SPECTROSCOPIC EVIDENCE; MICROBIAL COMMUNITIES;

D O I：

10.1016/j.ecoenv.2019.109550

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Recent discoveries on arsenic (As) biogeochemistry in aquifer-sediment system have strongly improved our understanding of As enrichment mechanisms in groundwater. We summarize here the research results since 2015 focusing on the As interfacial geochemistry including As speciation, transformation, and mobilization. We discuss the chemical extraction and speciation of As in environmental matrices, followed by As redox change and (im)mobilization in typical minerals and aquifer system. Then, the microbial-assisted reductive dissolution of Fe (hydr)oxides and As transformation and liberation are summarized from the aspects of bacterial isolates, microbial community and gene analysis by comparing As rich groundwater cases worldwide. Finally, the potential effect of organic matter on As interfacial geochemistry are addressed in the aspects of chemical interactions and microbial respiring activities for Fe and As reductive release.

引用

页数：12

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