A. van Geen

TL;DR: In this article, the authors re-examine the notion that extensive As mobilization in anoxic groundwater of Bangladesh is intimately linked to the dissolution of Fe oxyhydroxides on the basis of analyses performed on a suite of freshly collected samples of aquifer material.

TL;DR: In this article, the authors examined redox processes that lead to As mobilization in groundwater, and deduced from isotopic signatures of δ34SSO4 and 3H2O (3H) to delineate the nature of redox changes for some of the reducing groundwaters.

TL;DR: The proportion of wells that exceed the Bangladesh standard for drinking water of 50 μg/L arsenic increases with depth from 25% between 8 and 10 m to 75% between 15 and 30 m, then declines gradually to less than 10% at 90 m as mentioned in this paper.

TL;DR: Excessive levels of arsenic in drinking water is a vast health problem in Southeast Asia and several viable approaches to mitigation could drastically reduce arsenic exposure, but they all require periodic testing.