Data/hora: 12/06/2024 07:49:30

Provedor de dados: | Institutional Archive of Ifreme (ArchiMer)
País: | France
Título: | Nickel and vanadium contamination of benthic invertebrates following the "Erika" wreck
Autores: | Chiffoleau, Jean-francois; Chauvaud, Laurent; Amouroux, David; Barats, Aurélie; Dufour, Aurélie; Pecheyran, Christophe; Roux, Nathalie.
Data: | 2004-07
Ano: | 2004
Palavras-chave: | Monitoring; Scallop shell; Oyster; Mussel; Vanadium; Nickel; Oil spill.
Resumo: | Levels of nickel and vanadium, trace metals found in high concentration in the oil spilled from the "Erika" tanker off Brittany (France) in December 1999 (41 +/- 1 and 87 +/- 3 mg kg(-1) respectively), have been monitored over a one-year period following this accidental event in several benthic invertebrates. Ni and V in mussels (Mytilus edulis) and oysters (Crassostrea gigas) soft tissues were analysed twice a month by graphite furnace atomic absorption spectrometry and a scallop (Pecten maximus) shell daily growth bands were sampled every three bands by laser ablation and analysed by ICP-MS for these two contaminants. Survey data for mollusc tissues were compared with reference data arising from the national monitoring database. Ni concentrations in dried tissues, comparable with reference data (1.8 +/- 0.9 mug g(-1) in mussels and 1.2 +/- 0.5 mug g(-1) in oysters) do not show any additional input during the whole period. Conversely, a sharp increase in vanadium concentrations (up to 4.6 and 3.2 mug g(-1d) for mussels and oysters respectively) is observed around May 2000, i.e. 5 months after the wreck, compared with the monitoring data (1.4 +/- 0.6 mug g(-1) in mussels and 1.3 +/- 0.6 mug g(-1) in oysters). Furthermore, no Ni peak is detectable in the time profiles of scallop shell growth bands where a V peak is observed also in May 2000. This study shows that although a "mussel-watch-type" network, based on the monitoring of vanadium concentration in mollusc tissues, is able to identify contamination due to oil spills, similar information might be obtained a posteriori by analysing daily growth bands of scallop shells.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/2004/publication-402.pdf

DOI:10.1051/alr:2004032

Editor: | EDP Sciences
Relação: | http://archimer.ifremer.fr/doc/00000/402/
Formato: | application/pdf
Fonte: | Aquatic Living Resources (0990-7440) (EDP Sciences), 2004-07 , Vol. 17 , N. 3 , P. 273-280
Fonte: | EDP Sciences, IFREMER, IRD 2004