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Assessment of Heavy Metal Enrichment and the Degree of Contamination in Coastal Sediments of East Coast of Tamilnadu, India |
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PP: 183-190 |
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doi:10.18576/jrna/030308
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Author(s) |
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J. Chandramohan,
S. Sivakumar,
R. Vijayakumar,
E. Devanesan,
R. Ravisankar,
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Abstract |
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| The concentration of major and trace elements in coastal sediment samples collected from Pattipulam to Devanampattinam of East coast of Tamilnadu, India was determined using EDXRF technique. The concentration of Al, Ca, K, Fe, Ti, Mg, Mn, V, Cr, Zn, Ni and Co in sediment samples of different locations was reported. The mean concentration found to be: 1665 mg kg-1 for Mg; 21719 mg kg-1 for Al; 8405 mg kg-1 for K; 9284 mg kg-1 for Ca; 1520 mg kg-1 for Ti; 6554 mg kg-1 for Fe; 35.3 mg kg-1 for V; 30.1 mg kg-1 for Cr; 130.4 mg kg-1 for Mn; 2.3 mg kg-1 for Co; 20.2 mg kg-1 for Ni; 62.2 mg kg-1 for Zn, 6.2 mg kg-1 for As; 3.4 mg kg-1 for Cd; 404.9 mg kg-1 for Ba; 15.1 mg kg-1 for La; 12.1 mg kg-1 for Pb. The mean concentration of the elements is found to be decreased in the following order, Al > Ca > K> Fe >Mg >Ti> Ba >Mn > Zn > V> Cr > Ni > La > Pb > As > Cd > Co in the study area. The heavy metals pollution assessment of sediments are determined using pollution indices like contamination factor (CF) Contamination degree (Cd), Modified contamination degree (mCd) and potential contamination index (Cp). Values of CF indicate that the sediments were not contaminated with these elements. The potential contamination index (Cp) values of all heavy metals showed less than one indicates that sediments are low contamination except cadmium (Cd). This study reflects these pollution indices are efficient tool to assess the pollution status of sediments. |
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