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Year : 2017  |  Volume : 40  |  Issue : 1  |  Page : 21-26

Heavy metal assessment in sediments of east coast of Tamil Nadu using energy dispersive X-ray fluorescence spectroscopy

1 Department of Physics, Government Arts College, Tiruvannamalai, Tamil Nadu, India
2 Department of Geology, University of Madras, Guindy Campus, Chennai, Tamil Nadu, India
3 Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu, India

Correspondence Address:
R Ravisankar
Department of Physics, Government Arts College, Tiruvannamalai - 606 603, Tamil Nadu
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/rpe.RPE_67_16

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Selected heavy metals (Cr, Co, Ni, Cu, Zn, As, and Pb) in sediments from Periyakalapattu to Parangipettai of east coast of Tamil Nadu were determined to assess the contamination status and potential ecological risk. The pollution indices such as enrichment factor (EF), contamination factor (CF), geoaccumulation index (Igeo), and pollution load index (PLI) were calculated to determine the contamination level and enrichment of metals in sediments. EF analysis suggested that anthropogenic influence on the environment has been significant in case of Cr. The values of CF indicate that the sediments are not contaminated with these heavy metals. Igeoresults reveal that the study area is not contaminated with respect to Cr, Co, Ni, Cu, Zn, As, and Pb. This results of Igeoare in good agreement with PLI. Based on the sediment quality guidelines, it is observed that Cr and Ni would be a concern for the ecotoxicological risk in study area.

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