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Environ Pollut. 2009 Jan;157(1):331-40. doi: 10.1016/j.envpol.2008.06.027. Epub 2008 Jul 31.

Hg concentrations and related risk assessment in coral reef crustaceans, molluscs and fish from New Caledonia.

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Littoral Environnement et Sociétés, UMR 6250, CNRS-Université La Rochelle, 2 Rue Olympe de Gouges, F-17042 La Rochelle Cedex 01, France.


There is a dramatic lack of data on Hg levels in marine organisms from tropical areas, and in particular from New Caledonia. For the first time, this study reports the total Hg concentrations in the tissues of several marine taxa from the New Caledonian lagoon. Seafood from both wild and farmed populations was considered. Hg concentrations varied over three orders of magnitudes according to factors including species, age (size/weight), trophic level, lifestyle and geographical origin. Taking into account the edible tissues, estimations of the amount of flesh that should be consumed by a 60-kg person to reach the Hg Provisional Tolerable Weekly Intake (PTWI) reveal acceptable risk for Human health in general. However, a risk was clearly identified in one site of the lagoon (i.e. Grande Rade) where high Hg concentrations were measured. These concentrations were higher than values reported in the current literature.

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