Abstract
Ecosystem and biodiversity of India’s coastal areas dominated with mangrove forest have been threatened by growing anthropogenic activities. The present work aims to investigate the contamination of wetland sediments with trace elements and assess the sediment quality at different sampling locations in eastern and western costal region dominated with mangrove forest. The longitudinal profile of trace elements in sediments from different sampling locations analyzed by employing Energy Dispersive X-ray Fluorescence (EDXRF) spectrometer shows variations in distribution of elements like Al, Si, K, Ca, V, Cr, Mn, Fe, Ni, Cu, Zn and Pb. The enrichment factor (EF) and Geo-accumulation index (Igeo) values suggested depletion of clay minerals and enrichment of heavy metals like Cr, Cu Fe and Mn. Depending on the variations in Igeo values, the elements are put into Igeo Class 0 to 3 levels of contamination. Contamination factor (Cf) and pollution load index (PLI) suggested deterioration of sediments analyzed in the present study. Assessment of ecological risk potential of elements suggests that few elements (Cr and Cu) are moderately contaminated and may cause environmental stress on the exposed flora and fauna.
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