Pollution Research Paper

Vol 34, Issue 4, 2015; Page No.(795801)

ASSESSMENT OF HEAVY METAL CONCENTRATION IN COASTAL WATER AND GREEN MUSSEL PERNA VIRIDIS IN SOUTH INDIAN COASTAL REGION

P. VISVANATHAN AND M. GOVINDARAJU

Abstract

This study was conducted to measure the concentration of toxic heavy metals such as Zn, Ni, Cd, Cr, As, Hg, Pb, Cu, and Fe in coastal water and adductor tissues of green mussel Perna viridis along the South Indian coastal region. The results showed that the concentrations of heavy metals in coastal water are varied and depend on the site (Zn (0.33–3.54), Ni (0.06–3.19), Cd (0.04–2.15), As (0.05–0.34), Cr (0.03–0.35), Hg (0.02–0.29), Pb (0.22–2.66), Cu (0.65–2.87), and Fe (460–1313) μg/L). For mussel samples also the concentration varied (Zn (1.48 -15.7) Ni (0.44-4.0) Cd (0.16–0.53), Cr (0.04– 0.39), As (0.9–18.8), Hg (0.012–0.5), Pb (0.34–3.33), Cu (0.65–4.2), and Fe (14.8–246) μg/g). The results showed that the mean concentrations of heavy metals, As, Ni, Hg, Pb, Cd and Fe were in exceeding level. The overall results indicated that Cuddalore and Calicut areas were highly contaminated by heavy metals compared to other sampling locations. All the metal concentration values in coastal water and mussel tissue showed positive correlation at P >0.05 level.

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