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Anthropogenic effects on sediment quality of Muthupet mangroves: assessing the sediment core geochemical record.

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Title Anthropogenic effects on sediment quality of Muthupet mangroves: assessing the sediment core geochemical record.
 
Creator Natesan, Usha
Kumar, Madan M
Deepthi, K
 
Subject Core
Heavy metals
Index
Muthupet
Sediment
Southeast India
 
Description 1051-1060
Four cores were collected from Muthupet mangroves,
southeast coast of India
to evaluate the heavy metal contamination (Ni, Pb, Mn, Zn, V, Sr and Sc) and
the associated geochemical parameters viz., texture, CaCO3 and organic
carbon. Textural analysis reveals a predominance of mud. A distinct event is
identified at 57.5-60 cm suggesting a change in deposition trend due to the
tsunami on 26th June 1941. The higher values in the lower portion in
all the core samples indicate that metals are reprecipitated at deeper levels.
According to Geoaccumalation index Muthupet mangroves can be considered to be
uncontaminated to moderately contaminated with respect to trace metals.
Sediment Enrichment Factor computation indicate that all metals except Ni and
Mn in C4 (crustal origin) are of anthropogenic origin. From estimation of toxic
unit, it is evident that the sequence for toxicity is C3 > C4 > C2 >
C1.
 
Date 2016-06-23T16:30:47Z
2016-06-23T16:30:47Z
2014-06
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/28975
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.43(6) [June 2014]