Sujatha, C H; Manju, Nair P(International Science Congress Association, April 14, 2013)
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Abstract:
Distribution of toxic metal in the sediment core is an important area of research for environmental impact studies. Sediment
cores were collected from two prominent region(C1 and C2) of CE and subjected to geochemical analysis to determine
distribution of toxic metals (Cd, Co, Cr, Cu and Pb ), texture characteristics, total organic carbon (TOC) and CHNS.
Statistical analysis was done to understand the interrelationship between the components. In the studied cores, metal
contamination level was identified for Pb, Cu; Cr, in C1 and C2 respectively. The metal distribution depends on the
granulometric factor, geogenic mineral components and anthropogenic input. Correlation analysis (CA) and Principal
component(PCA) analysis also support these results
Description:
Research Journal of Chemical Sciences,Vol. 3(4), 65-69, April (2013)
Sujatha, C H; Akhil, P S; Manju, Nair P(July 17, 2013)
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Abstract:
This article present the result from a study of two sediment cores collected from the
environmentally distinct zones of CES. Accumulation status of five toxic metals: Cadmium (Cd), Chromium
(Cr), Cobalt (Co), Copper (Cu) and Lead (Pb) were analyzed. Besides texture and CHNS were determined to
understand the composition of the sediment. Enrichment Factor (EF) and Anthropogenic Factor (AF) were
used to differentiate the typical metal sources. Metal enrichment in the cores revealed heavy load at the
northern (NS1 ) region compared with the southern zone (SS1). Elevation of metal content in core NS1 showed
the industrial input. Statistical analyses were employed to understand the origin of metals in the sediment
samples. Principal Component Analysis (PCA) distinguishes the two zones with different metal accumulation
capacity: highest at NS1 and lowest at SS1. Correlation analysis revealed positive significant relation only in
core NS1, adhering to the exposition of the intensified industrial pollution
Sujatha, C H; Manju, Nair P(Academic Journals, September , 2013)
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Abstract:
This study gave the first report on the biennial metal divergence in the sediments of Cochin
Estuarine system (CES). Surface sediments from 6 prominent regions of CES were sampled
in 2009 and 2011 for the geochemical and environmental assessment of trace metals (Cd,
Co, Cr, Cu, Pb Fe, Mg, Mn, Ni and Zn).Besides texture, total organic carbon (TOC) and
CHNS were also done. The contamination and risk assessment were performed by
determining geochemical indices. Comparison with sediment quality guidelines were done
to assess the probability for ecotoxicological threat to the estuary. Results showed that the
measured heavy metals had varied spatial distribution patterns, indicating that they had
complex origins and controlling factors
Description:
International Journal of Recent Scientific Research
Vol. 4, Issue, 9, pp.1365- 1369, September, 2013
Sujatha, C H; Manju, Nair P; Akhil, P S(Indian Academy of Sciences, December , 2013)
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Abstract:
Geochemical composition is a set of data for predicting the climatic condition existing in an ecosystem.
Both the surficial and core sediment geochemistry are helpful in monitoring, assessing and evaluating the
marine environment. The aim of the research work is to assess the relationship between the biogeochemical
constituents in the Cochin Estuarine System (CES), their modifications after a long period of anoxia
and also to identify the various processes which control the sediment composition in this region, through
a multivariate statistical approach. Therefore the study of present core sediment geochemistry has a
critical role in unraveling the benchmark of their characterization. Sediment cores from four prominent
zones of CES were examined for various biogeochemical aspects. The results have served as rejuvenating
records for the prediction of core sediment status prevailing in the CES
Description:
J. Earth Syst. Sci. 122, No. 6, December 2013, pp. 1557–1570