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Mercury accumulation in the clam, Galatea paradoxa (Born 1778) at the Volta estuary, Ghana.

K A Obirikorang, S Amisah, D Adjei-Boateng, H A Madkour, and F A Otchere

Bull Environ Contam Toxicol 85(5):497-501 (2010) PMID 20972534

The concentration of mercury in the tissues of the clam, Galatea paradoxa at in the Volta estuary, Ghana, were analysed over an 18-month period, from March 2008 to August 2009. The concentrations were well below the International Human Consumption Advisory Limit of THg (0.5 μg/g wet weight). The concentrations in the tissues of the different clam size classes were between 6 and 18 times lower than the WHO Safety Reference Standard. Variation in the mean mercury concentration in the different clam size classes was not significant (p > 0.05) for clams from Aveglo but were highly significant (p < 0.0001) for clams from Ada, indicating a possible effect of size on accumulation. G. paradoxa is therefore suitable for human consumption based on the WHO Safety Reference Standards.

DOI: 10.1007/s00128-010-0125-7
Version: za2963e q8za6 q8zb5 q8zcb q8zd1 q8ze0 q8zf9 q8zg4

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