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  1. 1 Open Chemistry

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  1. 1 2007

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  1. 1 Kharitonova G.

  2. 1 Kot F.

  3. 1 Rapoport V.

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Immobilization of soil mercury by colloidal sulphur in the laboratory experiment

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Kot F., Rapoport V., Kharitonova G.
Open Chemistry
|
2007
|
vol. 5
|
issue 3
846-857
EN
The results of the laboratory pot experiments on soil mercury (Hg) immobilisation with a non-toxic and price-reasonable agent - colloidal sulphur (S) water suspension, are presented. It was shown that fertilisation with small agrochemical doses of colloidal S reduces excess Hg effectively as follows: in interstitial waters by a factor 2 – 12 times for total Hg, and 22– 680 times for “reactive” Hg; in stems and leaves of oats – 7 – 22 times; and in moss bags, reflecting soil Hg degassing, 7 – 15 times, for the most heavily Hg-spiked soils. The results obtained allowed to conclude that the immobilization of Hg occurs through Hg binding to the newly formed S-bearing functional groups in humic acids and/or sulphides. [...]
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