Health risk assessment and levels of toxic metals in fishes (Oreochromis noliticus and Clarias anguillaris) from Ankobrah and Pra basins: Impact of illegal mining activities on food safety

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dc.contributor.authorAkonor, P.T.
dc.contributor.authorKortei, N.K.
dc.contributor.authorHeymann, M.E.
dc.contributor.authorEssuman, E.K.
dc.contributor.authorKpodo, F.M.
dc.contributor.authorLokpo, S.Y.
dc.contributor.authorBoadi, N.O.
dc.contributor.authorAyim-Akonor, M.
dc.contributor.authorTettey, C.
dc.date.accessioned2020-07-15T09:15:19Z
dc.date.available2020-07-15T09:15:19Z
dc.date.issued2020-02-17
dc.descriptionResearch Articleen_US
dc.description.abstractArsenic (As), mercury (Hg), Cadmium (Cd) and lead (Pb) are toxic heavy metals that naturally occur in the ecosystem. Their levels are on the rise due to anthropogenic activities posing threat to aquatic wildlife and humans. In Ghana, pollution of some water bodies has led to unsafe consumption of riverine fishes as well as a shortage of treated potable water principally because the cost of treating polluted water has become expensive across the country. This study aimed to assess the As, Hg, Pb and Cd concentrations in water and fishes from rivers Pra and Ankobrah where activities of artisanal gold mining were carried out resulting in gross pollution of the water bodies. An experimental study was performed to ascertain the levels of As, Hg, Pb and Cd in fish species of Nile tilapia (Oreochromis noliticus) and mudfish (Clarias anguillaris) and aquatic media (water) from the Pra and River Ankobrah basins using the Atomic Absorption Spectrophotometer (AAS) (Varian AA240FS). Both river water samples recorded ranges of 0- 0.0040, 0.0060- 0.0387, 0 - 0.0020, 0.006-0.0093 mg/l for Cadmium, Lead, Arsenic and Mercury respectively. For Cadmium and Arsenic, their levels were comparable (p > 0.05). However, detected values for Lead and Mercury were no comparable (p < 0.05). Toxic metals concentrations in the rivers decreased in the order of Hg > Pb > Cd > As. For the fish samples, values ranged 0-0.08, 0.04-0.42, 0-0.04, and 0.40- 0.60 mg/kg for Cadmium, Lead, Arsenic and Mercury respectively. Generally, appreciably high values were obtained for Mercury. Toxic metals concentrations in the rivers decreased in the order of Hg > Pb > Cd > As. Human health risk assessment from heavy metal exposure through fish consumption from the Rivers for both children and adults showed no significant non-carcinogenic adverse health risk to humans since all calculated values for Hazard Quotient (HQ) were<1. Nonetheless, Target Hazard Quotient (THQ) values calculated for children and adult exposure to Cadmium and Mercury were>1 which implied a likely cause of adverse effects during a person's lifetime.en_US
dc.identifier.otherhttps://doi.org/10.1016/j.toxrep.2020.02.011
dc.identifier.urihttp://ugspace.ug.edu.gh/handle/123456789/35604
dc.language.isoenen_US
dc.publisherToxicology Reportsen_US
dc.relation.ispartofseries7;
dc.subjectToxic metalsen_US
dc.subjectTilapiaen_US
dc.subjectMudfishen_US
dc.subjectOreochromis noliticusen_US
dc.subjectClarias anguillarisen_US
dc.subjectIllegal mining activityen_US
dc.subjectGalamseyen_US
dc.titleHealth risk assessment and levels of toxic metals in fishes (Oreochromis noliticus and Clarias anguillaris) from Ankobrah and Pra basins: Impact of illegal mining activities on food safetyen_US
dc.typeArticleen_US

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