Role of sulfur redox cycling on arsenic mobilization in aquifers of Datong Basin, northern China

Sulfur redox cycling potentially exerts important influences on arsenic (As) fate in shallow groundwater systems. Hydrochemical and sediment geochemical analysis combined with thermodynamic modeling study were conducted at Datong Basin to elaborate the effects of sulfur redox cycling on As speciatio...

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Bibliographic Details
Published in:Applied geochemistry 2017-02, Vol.77, p.31-43
Main Authors: Pi, Kunfu, Wang, Yanxin, Xie, Xianjun, Ma, Teng, Su, Chunli, Liu, Yaqing
Format: Article
Language:English
Subjects:
Arsenic
Enrichment mechanism
Iron mineral transformation
Sulfidogenesis
Thioarsenic
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Summary:Sulfur redox cycling potentially exerts important influences on arsenic (As) fate in shallow groundwater systems. Hydrochemical and sediment geochemical analysis combined with thermodynamic modeling study were conducted at Datong Basin to elaborate the effects of sulfur redox cycling on As speciation and mobilization under a strongly reducing environment. Dissolved As and sulfide concentration in 32 groundwater samples with depths of 19–40 m below the land surface varied from 8 to 2700 μg/L and from
ISSN:0883-2927
1872-9134
DOI:10.1016/j.apgeochem.2016.05.019