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Título: | Lead contamination of small cetaceans in European waters - The use of stable isotopes for identifying the sources of lead exposure |
Autor: | Caurant, Florence; Aubail, A.; Lahaye, Virginie; van Canneyt, O.; Rogan, Emer; López, Alfredo; Addink, M.; Churlaud, C.; Robert, M.; Bustamante, Paco | Palabras clave: | Biomonitoring Temporal trends Northeast Atlantic Common dolphin Striped dolphins Harbour porpoises Heavy metals Hard tissues Lead |
Fecha de publicación: | 2006 | Editor: | Elsevier | Citación: | Marine Environmental Research 62(2): 131-148 (2006) | Resumen: | Lead concentrations and isotopic composition have been measured in bone and teeth of small cetaceans belonging to three species (Delphinus delphis, Phocoena phocoena and Stenella coeruleoalba), to evaluate the toxicological risk and to determine sources of lead in the European waters. Lead concentrations, far lower than threshold value inducing toxic effects in human, were higher in teeth than in bones, but highly correlated between the two tissues (r = 0.92, p < 0.001). Large variations of 206Pb/207Pb values in bone tissue showed that cetaceans must be submitted to various atmospheric influences. No geographical differences appeared which is consistent with studies on their distribution indicating seasonal movements between Brittany waters and the Bay of Biscay. The negative correlation between 206Pb/207Pb ratios and age of the individuals reflected the decrease in the production of alkyl lead in Europe, i.e., the increasing use of unleaded gasoline. | Descripción: | 18 páginas, 6 figuras, 1 tabla | Versión del editor: | http://dx.doi.org/10.1016/j.marenvres.2006.03.007 | URI: | http://hdl.handle.net/10261/55659 | DOI: | 10.1016/j.marenvres.2006.03.007 | ISSN: | 0141-1136 |
Aparece en las colecciones: | (IIM) Artículos |
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