Treatment of mercury contaminated lakes
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United States of America Patent
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Oct 25, 1988
Grant Date -
N/A
app pub date -
Sep 22, 1987
filing date -
Oct 3, 1986
priority date (Note) -
Expired
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Abstract
The present invention relates to a method for treating lakes with selenium with the intention of lowering the mercury content of fish, and is characterized by supplying to the lake selenium in the form of a selenium salt incorporated in a carrier material capable of dispensing selenium to the surrounding water substantially continuously and in a controlled manner. The carrier material is preferably a rubber-based or silicon-based and biologically degradable material. There is preferably maintained an effective selenium level of beneath 10 .mu.g.
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