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Textural and heavy metal distribution in sediments of Mahanadi estuary, East coast of India

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Title Textural and heavy metal distribution in sediments of Mahanadi estuary, East coast of India
 
Creator Raj, Sudarsan
Jee, Pravas Kumar
Panda, Chitta Ranjan
 
Subject Mahanadi estuary
Heavy metal
Geo accumulation index
Contamination factor
Correlation matrix
 
Description 370-374
Surface sediment
samples from the Mahanadi estuarine region
were collected during May, 2008 to April, 2010 in three different seasons
(pre-monsoon, post-monsoon and summer) annually. Present study focuses on the
levels of Pb, Cd, Hg, texture pattern and organic carbon in order to assess the
extent of environmental pollution. Concentration data were processed using
correlation analysis. Contamination of sediments was assessed on the basis of
contamination factor (CF), geo-accumulation index (Igeo) and
pollution load index (PLI). Average concentration of Pb, Cd and Hg were
23.88±8.88 g/g, 1.45±0.14 g/g, 0.107±0.070 g/g in 2008-09 and 23.89±7.27 g/g, 0.65±0.50 g/g, 0.102±0.058 g/g in 2009-10 respectively. Texture pattern found to
be sand dominated averaging over 96.00% in both the years followed by silt and
clay fraction. Results of Pearson correlation matrix showed a positive
correlation of grain size and organic carbon with concentration of Cd and Pb
suggesting the influence of fine fraction in their incorporation into the
sediments. Results of
geo-accumulation index indicated that the sediments were uncontaminated with
Hg, uncontaminated to moderately contaminated with Pb and moderately
contaminated with Cd in the estuarine region.


 
Date 2013-07-12T09:44:08Z
2013-07-12T09:44:08Z
2013-06
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/19648
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.42(3) [June 2013]