Determination of Heavy Metals in Water, Fish and Sediment from Ureje Water Reservoir

Adebayo Ia
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Adebayo Ia: Department of Fisheries and Aquaculture Management, Ekiti State University, Nigeria

Oceanography & Fisheries Open Access Journal, 2017, vol. 4, issue 1, 12-16

Abstract: The concentrations of Iron (Fe), Copper (Cu), Zinc (Zn), Lead (Pb), Cadmium (Cd), Chromium (Cr) and Manganese (Mn) in water, sediment and selected fish samples from Ureje water reservoir, Ado Ekiti, were determined using Atomic Absorption Spectrophotometer (AAS). A total of three samples each of water, sediment, fishes (Hemichromis fasciatus & Hepsetus odoe) were collected and analyzed for heavy metals. Data obtained were subjected to analysis of variance (ANOVA) test at 0.05%. The results showed higher levels of Zn (13.08±0.45mg/g) and Fe (2.10±0.56mg/g) in fish in comparison with other heavy metals examined. Chromium has exceeded the toxicity threshold in the muscle of the fishes in line with WHO standards in food. Cadmium was not detected in soil, while other elements detected were in trace amount below the Environmental Protection Agency allowable limits in soil. In water, except for Fe (1.25±0.02)mg/l, other metals were below allowable limit in water with reference to the World Health Organization’s recommendation. This finding indicates that the water is safe for both aquatic life and man.

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Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:adp:jofoaj:v:4:y:2017:i:1:p:12-16

DOI: 10.19080/OFOAJ.2017.04.555628

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