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Selenium in reducing waters.

G A Cutter

    Science (New York, N.Y.)
    |August 27, 1982
    PubMed
    Summary
    This summary is machine-generated.

    Selenium

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    Area of Science:

    • Environmental Chemistry
    • Geochemistry
    • Biogeochemistry

    Background:

    • Understanding selenium's biogeochemical cycle is crucial for environmental science.
    • Reducing waters are unique environments where selenium speciation can reveal key processes.

    Purpose of the Study:

    • To analyze selenium species in reducing waters.
    • To elucidate the dominant selenium regeneration processes in these environments.

    Main Methods:

    • Analysis of dissolved selenium species in water samples.
    • Speciation of selenium to identify different chemical forms.

    Main Results:

    • Selenate and selenite were notably absent in the reducing waters analyzed.
    • Dissolved organic selenide was present at approximately 1 nanomole per liter.
    • Organic selenium species appear to be a significant regeneration pathway.

    Conclusions:

    • Selenium removal mechanisms may be active, but regeneration via organic species is dominant in reducing waters.
    • The biogeochemical and regenerative cycles of selenium are complex and multifaceted.