Abstract
Heavy metals are considered to be the most common environmental pollutants in waters and biota; that indicate presence of effluents associated with industrial and domestic sources. The present study aimed to evaluate the trace metal accumulation (Fe, Mn, Zn, Cu, Cd, Pd and Ni) in the tissue of radiate top shell, the sediment and water samples collected from the Hare Island, Tuticorin, during May 2015 to April 2016. During the study, the metal accumulation in the Water, Sediment and Tissue were in the order of Zn > Pb > Cu > Cd; Fe > Mn > Zn > Cu > Cd; Fe > Zn > Mn > Cu > Cd > Pb > Ni respectively. The concentration of Fe dominated in the sediment and tissue sample throughout the study period. Elevated levels of trace metals especially Fe, Mn, Cu, Pb and Zn was observed during October to December, i.e., during the northeast monsoon in all the samples. One way ANOVA indicated statistically no significant difference (p > 0.01) in the variation of Fe, Mn and Ni within the samples.
Highlights
The Ocean and coastal waters constitute a variety of human activities that primarily includes fisheries, agriculture, navigation, oil and mineral exploration and waste disposal [1]
The present study aimed to evaluate the trace metal accumulation (Fe, Mn, Zn, Cu, Cd, Pd and Ni) in the tissue of radiate top shell, the sediment and water samples collected from the Hare Island, Tuticorin, during May 2015 to April 2016
The metal accumulation in the Water, Sediment and Tissue were in the order of Zn > Pb > Cu > Cd; Fe > Mn > Zn > Cu > Cd; Fe > Zn > Mn > Cu > Cd > Pb > Ni respectively
Summary
The Ocean and coastal waters constitute a variety of human activities that primarily includes fisheries, agriculture, navigation, oil and mineral exploration and waste disposal [1]. The heavy metal pollution results from the effluents that are discharged untreated into the sea and river mainly from the industrial and municipal sources [5] [6] [7]. These heavy metals are accumulated by the primary consumers especially the algae, and are further biomagnified through their transmission across the higher levels of the food chain resulting in a direct impact on the human health [8]. Hutton [9] reported Lead, copper, cadmium, Chromium and arsenic to be the most toxic heavy metal pollutants
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