Dissolved trace element biogeochemistry of a tropical river, Southwestern India

Tripti, M and Gurumurthy, G P and Balakrishna, K and Chadaga, Mohandas (2013) Dissolved trace element biogeochemistry of a tropical river, Southwestern India. Environmental Science and Pollution Research , 20 (6). pp. 4067-4077. ISSN 0944-1344

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Abstract

River Swarna, a small tropical river originating in Western Ghats (at an altitude of 1,160m abovemean sea level) and flowing in the southwest coast of India discharges an average of 54 m3s−1 of water into the Arabian Sea, of which significant part is being discharged during the monsoon. No studies have been made yet on the water chemistry of the Swarna River basin, even as half a million people of Udupi district use it for domestic and irrigational purposes. As large community in this region depends on the freshwater of Swarna River, there is an urgent need to study the trace element geochemistry of this west flowing river for better water management and sustainable development. The paper presents the results on the biogeochemistry of dissolved trace elements in the Swarna River for a period of 1 year. The results obtained on the trace elements show seasonal effect on the concentrations as well as behavior and thus forming two groups, discharge driven (Li, Be, Al, V, Cr, Ni, Zr, In, Pb, Bi and U) and base flow driven (groundwater input; Mn, Fe, Co, Cu, Ga, Zn, As, Se, Rb, Sr, Ag, Cd, Cs, Ba and Tl) trace elements in Swarna River. The biogeochemical processes explained through Hierarchical Cluster Analysis show complexation of Fe, Ga and Ba with dissolved organic carbon, redox control over Mn and Tl and biological control over V and Ni. Also, the water quality of Swarna River remains within the permissible limits of drinking water standards.

Item Type: Article
Additional Information: Springer-Verlag Berlin Heidelberg 2012
Uncontrolled Keywords: Dissolved trace element . Biogeochemistry . Hierarchical cluster analysis . Tropical river . Swarna River . Southwestern India
Subjects: Engineering > MIT Manipal > Civil Engineering
Depositing User: MIT Library
Date Deposited: 13 Mar 2013 09:32
Last Modified: 29 Jun 2013 11:23
URI: http://eprints.manipal.edu/id/eprint/78990

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