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Dynamics and quantification of dissolved metals in a highly contaminated river-estuarine system

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Title Dynamics and quantification of dissolved metals in a highly contaminated river-estuarine system
 
Creator Asa, S.C.
Bramha, S.N.
Mohanty, A.K.
Bastia, T.K.
Behera, D.
Rath, P.
 
Subject Dissolved metals
Enrichment ratio
Metal Pollution Index
Discriminate analysis
Factor analysis
 
Description 1310-1322
Dynamics of heavy metals such as Fe, Mn, Co, Ni, Cu, Zn, Cr, Pb and Cd in surface water of Brahmani river-estuarine system were studied taking 25 samples from different sampling locations along the complete stretch. Irrespective of season, Fe was most abundant in both river (avg. 260.15 µg/l ) and estuarine (avg. 119.9 µg/l) samples, whereas Cd (avg. 1.59 µg/l) and Co (avg.1.55 µg/l) were the lowest in the river and estuarine samples respectively. The average concentrations of all the dissolved metals were much higher than the world river average. The average concentrations Cr and Cd for the river were above the criteria of maximum concentration (CMC) as prescribed by US Environmental Protection Agency. Results of factor analyses revealed that anthropogenic contributions were the source for the increase in dissolved metal concentrations. Canonical discriminate function indicated that it was moderately successful in discriminating the groups as predicted. River Brahmani with an annual discharge of 18.58 x 106m3 carries 6.907 x 103 tons of total heavy metals into Bay of Bengal and the calculated rate of erosion in the basin is 176.582 kg km-2 year-1.
 
Date 2016-07-21T07:46:07Z
2016-07-21T07:46:07Z
2015-09
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://nopr.niscair.res.in/jspui/handle/123456789/34916
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.44(09) [September 2015]