Heavy metals partitioning in sediments of the Kabini River in South India

Hejabi, A. T. and Basavarajappa, H. T. (2013) Heavy metals partitioning in sediments of the Kabini River in South India. Environmental Monitoring and Assessment, 185 (2). pp. 1273-1283.

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Abstract

Cu, Cr, Fe, Mn, Ni, Pb, and Zn in the sediments of the Kabini River, Karnataka, India was studied to determine the association of metal with various geochemical phases by sequential extraction. The variations of heavy metal concentration depend on the lithology of the river basin and partly on anthropogenic activities. The Kabini River sediments are dominated by Sargur supracrustals with amphibolites, gneisses, carbonates, and ultrabasic rocks weathering into gneissic and serpentine soils carrying a natural load of cationic heavy metals. The source of heavy metals in the Kabini riverbed sediments is normally envisaged as additional inputs from anthropogenic over and above natural and lithogenic sources. Geochemical study indicates the metals under study were present mostly in the least mobilizable fraction in the overlying water and it is concluded that heavy metals in these sediments are to a great extent derived from multisource anthropogenic inputs besides geochemical background contributions The results show that lead and chromium have higher potential for mobilization from the sediment due to higher concentration at the exchangeable ion and sulfide ion bounded, also Cu and Pb have the greatest percentage of carbonate fraction, it means that the study area received inputs from urban and industrial effluents. Association of the Fe with organic matter fraction can be explained by the high affinity of these elements for the humic substances. Further, Zn and Ni reveal a significant enrichment in sediment and it is due to release of industrial wastewater into the river. These trace metals are possible contaminants to enter into aquatic and food chain.

Item Type:	Article
Uncontrolled Keywords:	article, India, concentration (parameters), human activity, Karnataka, chemistry, Lead, zinc, Zinc, Anthropogenic activity, copper, environmental monitoring, concentration (composition), iron, Environmental Monitoring, Industrial effluent, Sewage, Copper, heavy metal, water pollution, fluvial deposit, sediment pollution, Metals, water pollutant, Water Pollutants, Positive ions, river basin, Nickel, Chemical, chromium, Chromium, Heavy, Heavy metals, nickel, organic matter, pollution transport, Sequential extraction, statistics, lead, ion exchange, manganese, River pollution, geochemical analysis, water contamination, Anthropogenic inputs, extraction method, Geochemical background, Geochemistry, Geologic Sediments, Heavy metal concentration, humic substance, Industrial wastewaters, Kabini River, Lithology, mobilization, Organic matter fraction, partitioning, river, Rivers, sediment, sediment chemistry, Sedimentology, Sediments, Serpentine, stream (river), Water Pollution, weathering
Subjects:	F Earth Science > Geology
Divisions:	Department of > Earth Science
Depositing User:	Arshiya Kousar Library Assistant
Date Deposited:	12 Sep 2019 05:36
Last Modified:	12 Sep 2019 05:36
URI:	http://eprints.uni-mysore.ac.in/id/eprint/8046

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