Bacteria found to release arsenic into groundwater

By Alexandra Goho, 15:50 PM April 15, 2008

Millions of people around the world, particularly in southern and southeastern Asia, are exposed to drinking and irrigation water contaminated with arsenic. Now, it appears that the poison gets into groundwater largely through the action of bacteria residing in aquifer sediments.

Jonathan Lloyd at the University of Manchester in England and his colleagues discovered that mechanism while analyzing sediments collected from a contaminated aquifer in West Bengal, India. The researchers mixed the ...

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