Uptake and depuration of 131I by the edible periwinkle Littorina littorea: uptake from labelled seaweed (Chondrus crispus).

Wilson, R C; Vives i Batlle, J; McDonald, P; Parker, T G

Wilson, R C; Vives i Batlle, J; McDonald, P; Parker, T G.

Afiliación

Wilson RC; Westlakes Research Institute, The Princess Royal Building, Westlakes Science and Technology Park, Moor Row, Cumbria CA24 3LN, UK.

J Environ Radioact ; 80(3): 259-71, 2005.

Article en En | MEDLINE | ID: mdl-15725502

RESUMEN

Uptake and depuration experiments of (131)I from labelled seaweed (Chondrus crispus) by the edible periwinkle Littorina littorea have been performed. Radioiodine concentrations in winkles during uptake followed first-order kinetics with an uptake half-time of 1 day, and a calculated equilibrium concentration (C(infinity)) of 21 000 Bq kg(-1) resulting in a transfer factor of 0.07 with respect to the labelled seaweed used as food. For depuration, a biphasic sequence with biological half-lives of 1 and 24 days was determined. The results suggest that in general, iodine turnover in periwinkles is slower than observed for other molluscs (monophasic biological half-lives in the order of 2-3 days). Both environmental media, food and seawater, can be significant sources of radioiodine for the winkle.

Asunto(s)

Algas Marinas/química; Caracoles/fisiología; Contaminantes Radiactivos del Agua/farmacocinética; Animales; Dieta; Cadena Alimentaria; Semivida; Radioisótopos de Yodo/farmacocinética; Distribución Tisular

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Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Algas Marinas / Caracoles / Contaminantes Radiactivos del Agua Límite: Animals Idioma: En Revista: J Environ Radioact Asunto de la revista: SAUDE AMBIENTAL Año: 2005 Tipo del documento: Article Pais de publicación: Reino Unido

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