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<smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="country-region"><smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="City"><smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="place"> Trace metals concentrations in the sediment cores of estuary and tidal zones between Chennai and Pondicherry, along the east coast of India </smarttagtype></smarttagtype></smarttagtype>

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Title Trace metals concentrations in the sediment cores of estuary and tidal zones between Chennai and Pondicherry, along the east coast of India
 
Creator Achyuthan, Hema
Richardmohan, D.
 
Subject Trace metals
concentrations
sediment cores
east coast
Tamil Nadu
 
Description 141-149
Four sediment cores collected from the water depths varying between 1.0 and 1.50 m in estuarine and tidal zones between Chennai and Pondicherry, along the Tamil Nadu coast, were analysed for major elements (Fe and Al), trace metals (Mn, Zn, Cr, Co, Pb and Ni), carbonate and organic carbon contents to understand the behaviour of trace metals and their probable sources. The results reveal that Ni and Cr are higher in the Adyar estuarine sediments compared to other three sites at Muttukadu, Mamallapuram and Marakkanam. Higher content of Ni and Cr in the entire core sediments of Adyar points to mixing of sediments and bioturbation. Calculated enrichment factor (EF) with respect to upper continental crust (UCC) values show that analysed sediments are depleted in Mn, Co, Pb and enriched in Ni, Cr. Adyar estuary is highly contaminated especially with respect to Ni and Cr due to metal inputs from anthropogenic activity. Higher Fe and Mn content in Mamallapuram sediments may be due to the variability of source rock exposed in this region. The EF values of Marakkanam sediments reveal unpolluted nature and the positive correlation among Fe, Mn and other trace metals indicate the influence of early diagenetic process.
 
Date 2009-05-26T05:06:19Z
2009-05-26T05:06:19Z
2002-06
 
Type Article
 
Identifier 0379-5136
http://hdl.handle.net/123456789/4314
 
Language en_US
 
Publisher CSIR
 
Source IJMS Vol.31(2) [June 2002]