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dc.contributor.authorChakraborty, P.
dc.contributor.authorVudamala, K.
dc.contributor.authorCoulibaly, M.
dc.contributor.authorRamteke, D.
dc.contributor.authorChennuri, K.
dc.contributor.authorLean, D.
dc.date.accessioned2015-10-16T05:56:42Z
dc.date.available2015-10-16T05:56:42Z
dc.date.issued2015
dc.identifier.citationEnvironmental Science And Pollution Research, vol.22(14); 2015; 10529-10538
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/4797
dc.description.abstractThis study demonstrates that under abiotic dark conditions in aquatic system, humic substances are not only capable of converting Hg(II) to Hg<sup>0</sup> but also able to bind Hg(II) ion. The degree of Hg(II) reduction is significantly influenced by the ratio of –COOH/–OH groups and the sulfur content in the HS, revealing a strong competition between complexation and reduction of Hg(II). This study suggests that abiotic and dark Hg(II) reduction depends on the pH and salinity of aqueous medium. At lower pH (<=4.0) and lower salinity (<=5.0 PSU), the reduction of Hg(II) to elemental mercury (Hg<sup>0</sup> ) was comparatively rapid. Higher –COOH/– OH ratios in HS, favors dark abiotic reduction of Hg(II) as did a lower sulfur (S) content of HS. This study provided a rigorously controlled experimental design that showed that dark abiotic Hg(II) reduction by HS can potentially be important in the aquatic environment and is independent of the photochemical reduction observed in both fresh water and sea water
dc.language.isoen
dc.publisherSpringer
dc.rightsAn edited version of this paper was published by Springer. This paper is for R & D purpose and Copyright [2015] Springer.
dc.subjectAQUATIC POLLUTION
dc.subjectCHEMISTRY AND BIOGEOCHEMISTRY
dc.subjectCHEMISTRY AND BIOGEOCHEMISTRY
dc.subjectCHEMISTRY AND BIOGEOCHEMISTRY
dc.subjectAQUATIC ECOLOGY, PRODUCTIVITY
dc.titleReduction of mercury (II) by humic substances-influence of pH, salinity of aquatic system
dc.typeJournal Article


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