Mercury profiles in sediment from the marginal high of Arabian Sea: an indicator of increasing anthropogenic Hg input
2016
Chakraborty, Parthasarathi | Vudamala, Krushna | Chennuri, Kartheek | Armoury, Kazip | Linsy, P. | Ramteke, Darwin | Sebastian, Tyson | Jayachandran, Saranya | Naik, Chandan | Naik, Richita | Nath, B Nagender
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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