Mercury profiles in sediment from the marginal high of Arabian Sea: an indicator of increasing anthropogenic Hg input

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...

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Bibliographic Details
Published in:Environmental science and pollution research international 2016-05, Vol.23 (9), p.8529-8538
Main Authors: Chakraborty, Parthasarathi, Vudamala, Krushna, Chennuri, Kartheek, Armoury, Kazip, Linsy, P., Ramteke, Darwin, Sebastian, Tyson, Jayachandran, Saranya, Naik, Chandan, Naik, Richita, Nath, B. Nagender
Format: Article
Language:English
Subjects:
Anoxic conditions
Anthropogenic factors
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Binding sites
Contaminated sediments
Cores
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Health
Environmental Monitoring
Environmental science
Geologic Sediments - chemistry
India
Mercury
Mercury - analysis
Quality control
Reference materials
Research Article
Seawater - chemistry
Sediments
Speciation
Studies
Waste Water Technology
Water Management
Water Pollutants, Chemical - analysis
Water Pollution Control
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Summary: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.
ISSN:0944-1344
1614-7499
DOI:10.1007/s11356-015-5925-1