Arsenic contamination of Bangladesh aquifers exacerbated by clay layers

Arsenic contamination of Bangladesh aquifers exacerbated by clay layers

Generally it is thought that confining clay layers provide protection to low-arsenic groundwaters against intrusion of shallower, high-arsenic groundwater bodies. Here, the authors show that impermeable clay layers can increase arsenic input to underlying groundwater systems due to reduction of iron...

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Bibliographic Details
Main Authors: Ivan Mihajlov, M. Rajib H. Mozumder, Benjamín C. Bostick, Martin Stute, Brian J. Mailloux, Peter S. K. Knappett, Imtiaz Choudhury, Kazi Matin Ahmed, Peter Schlosser, Alexander van Geen
Format: Article
Language:English
Published: Nature Publishing Group 2020-05-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/s41467-020-16104-z
Description
Summary:Generally it is thought that confining clay layers provide protection to low-arsenic groundwaters against intrusion of shallower, high-arsenic groundwater bodies. Here, the authors show that impermeable clay layers can increase arsenic input to underlying groundwater systems due to reduction of iron oxides coupled to carbon oxidation.
ISSN:2041-1723

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