Microbial transformations of arsenic in the environment: From soda lakes to aquifers

Jonathan R. Lloyd, Ronald S. Oremland

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Arsenic is a highly toxic element that supports a surprising range of biogeochemical transformations. The biochemical basis of these microbial interactions is described, with an emphasis on energy-yielding redox biotransformations that cycle between the As5+ and As3+ oxidation states. The subsequent impact of As3+-oxidising and As 5+-reducing prokaryotes on the chemistry of selected environments is also described, focusing on soda lakes with naturally high concentrations of the metalloid and on Southeast Asian aquifer sediments, where the microbial reduction of sorbed As5+ and subsequent mobilisation of As 3+ into water abstracted for drinking and irrigation threaten the lives of millions.
    Original languageEnglish
    Pages (from-to)85-90
    Number of pages5
    JournalELEMENTS
    Volume2
    Issue number2
    DOIs
    Publication statusPublished - Apr 2006

    Keywords

    • Arsenic poisoning
    • Biogeochemical cycles
    • Metal oxidation
    • Metal reduction
    • Metal resistance

    Fingerprint

    Dive into the research topics of 'Microbial transformations of arsenic in the environment: From soda lakes to aquifers'. Together they form a unique fingerprint.

    Cite this