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  • Title: Total mercury in fish, sediments and soil from the River Pra Basin, southwestern Ghana.
    Author: Oppong SO, Voegborlo RB, Agorku SE, Adimado AA.
    Journal: Bull Environ Contam Toxicol; 2010 Sep; 85(3):324-9. PubMed ID: 20585751.
    Abstract:
    Total Mercury (Hg) concentrations were determined in soil, river sediments and six (6) species of fish from the River Pra Basin in southwestern Ghana by Cold Vapour Atomic Absorption Spectrometry. Mercury concentration (microg g(-1)) ranged from 0.042 to 0.145 for soil: from 0.390 to 0.707 for sediments and from <0.001 to 0.370 for fish. All the fish samples had Hg concentration below the World Health Organisation (WHO) permissible limit of 0.5 microg g(-1) whereas all the sediment samples had levels higher than the US-EPA value of 0.2 microg g(-1). The results obtained from this study showed that fish from River Pra Basin are unlikely to constitute any significant mercury exposure to the public through consumption. No apparent trend of increasing mercury concentration along the main river as it flows downward toward the sea was observed.
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