Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 23, Issue 9, Pages 8529-8538Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-015-5925-1
Keywords
Mercury deposition; Hg speciation; Anoxic sediment; Redox cycling andmercury; Mercury pollution
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Total Hg distributions and its speciation were determined in two sediment cores collected from the western continental marginal high of India. Total Hg content in the sediment was found to gradually increase (by approximately two times) towards the surface in both the cores. It was found that Hg was preferentially bound to sulfide under anoxic condition. However, redox-mediated reactions in the upper part of the core influenced the total Hg content in the sediment cores. This study suggests that probable increase in authigenic and allogenic Hg deposition attributed to the increasing Hg concentration in the surface sediment in the study area.
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