Urdaibaiko itsasadarreko kutsatzaile organikoen eta organometalikoen jarraipena
- Julen Bustamante
- Amaia Albisu
- Aresatz Usobiaga
- Olatz Zuloaga
- Alberto de Diego
- Sonia Arrasate
- Eneritz Anakabe
- Alaitz Atutxa
ISSN: 1887-9810
Year of publication: 2008
Issue: 2
Pages: 127-138
Type: Article
More publications in: Revista Forum de Sostenibilidad = Forum Iraunkortasun aldizkaria = Sustainability Forum journal
Abstract
Methylmercury (MeHg+), butyltins (BTs, mono-, di- and trisubstituted), polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) were monitored in the estuary of Urdaibai (Gulf of Biscay) in sediments and oysters (Crassostrea sps.) collected from January 2006 to June 2007 every three months. Concentrations of organometallic species were only measurable in biota samples and they were between 75-200 μg/Kg and 400-1300 μg/Kg for MeHg+ and BTs, respectively. PAH concentrations were in the range of 856-3495 μg/Kg and 264-1789 μg/Kg for sediments and biota, respectively. Finally, in the case of PCBs the concentrations ranged between 58-220 μg/Kg and 50-250 μg/Kg for sediments and biota, respectively. No correlation between the total organic carbon (TOC) and the lipid content of sediments and biota, respectively, and the concentrations of organic and organometallic species was found and, thus, no normalization of the concentrations was performed. Discussion on the possible contamination sources and possible cycles of the analytes in the estuary was performed.