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Article Dans Une Revue Marine Pollution Bulletin Année : 2017

Lead accumulation in oyster shells, a potential tool for environmental monitoring

Résumé

Pb/Ca profiles were measured on ten live collected Ostrea edulis from three sites characterized by different levels of lead content. Intra-shell and inter-shell reproducibility were tested comparing several Pb/Ca profiles measured by LA-ICP-MS within a specimen, and within specimens from the same site. Results indicate that signals recorded are reproducible and mean shell Pb/Ca values are site-dependent. Second order variability is explained either by smoothing effects, biological effects or micro-environmental heterogeneities in lead distribution. Mean Pb contents measured in marine bivalve shells are reviewed here. Ranging from 0 to 50 ppm, they show a strong relationship with the environmental level of local lead contamination, and do not appear species-dependent. Our measurements show a linear relationship between mean shell Pb/Ca and surface sediment Pb concentrations, making marine bivalves and particularly O. edulis a potential accurate bio-monitoring tool able to monitor bioavailable lead along European coasts since Mesolithic, with an annual resolution. © 2017 Elsevier Ltd
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Dates et versions

hal-03620321 , version 1 (25-03-2022)

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Elsa Cariou, Christèle Guivel, Carole La, Laurent Lenta, Mary Elliot. Lead accumulation in oyster shells, a potential tool for environmental monitoring. Marine Pollution Bulletin, 2017, 125 (1-2), pp.19-29. ⟨10.1016/j.marpolbul.2017.07.075⟩. ⟨hal-03620321⟩
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