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Elemental concentration based potential ecological risk (PER) status of the surface sediments, Pulicat lagoon,
P Saravanan1, S Krishnakumar2, D Pradhap1
1Department of Geology, University of Madras, Guindy campus, Chennai 600 025, India.
Abstract:
Eighty-three surface sediments were collected to investigate the element concentration based sediment pollution and potential ecological risk status of the Pulicat lagoon, southeast coast of India. The textural characteristics, Fe and Mn concentration in the surface sediments are chiefly controlled by the confluence of riverine inputs and vicinity of the marine environment. The varied distribution of CaCO3 concentration is due to the depth of the lagoon followed by the sand and silty sand characteristics of the substratum. The surface sediments are derived from riverine sources. Sediment Pollution Index (SPI), Potential Ecological Risk Index of the sediments suggests that they are falling under less polluted and low potential ecological risk category.
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