Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
Levels and enantiomeric signatures of methyl sulfonyl PCB and DDE metabolites in livers of Harbor Porpoises (Phocoena phocoena) from the Southern North Sea
Chu, S.; Covaci, A.; Haraguchi, K.; Voorspoels, S.; Van de Vijver, K.; Das, K.; Bouquegneau, J.-M.; De Coen, W.M.; Blust, R.; Schepens, P. (2003). Levels and enantiomeric signatures of methyl sulfonyl PCB and DDE metabolites in livers of Harbor Porpoises (Phocoena phocoena) from the Southern North Sea. Environ. Sci. Technol. 37(20): 4573-4578. https://dx.doi.org/10.1021/es034241t
In: Environmental Science and Technology. American Chemical Society: Easton. ISSN 0013-936X; e-ISSN 1520-5851, meer
|  |
| Trefwoorden |
ANE, North Sea, Southern Bight
Belgium
Metabolites
Toxicants
Toxicology
Phocoena phocoena (Linnaeus, 1758) [WoRMS]
België [Marine Regions]; Zuidelijke Bocht [Marine Regions]
Marien/Kust |
| Auteurs | | Top |
- Chu, S.
- Covaci, A., correspondent
- Haraguchi, K.
- Voorspoels, S.
|
- Van de Vijver, K.
- Das, K.
- Bouquegneau, J.-M.
|
- De Coen, W.M.
- Blust, R.
- Schepens, P.
|
| Abstract |
The concentration of 26 methyl sulfonyl metabolites of polychlorinated biphenyls (MeSO2-PCBs) and of p, p¢-DDE (MeSO2-DDE) were determined in 19 liver samples from harbor porpoises (Phocoena phocoena) stranded between 1997 and 2000 on the Belgian and French North Sea Coasts. The total concentration of MeSO2-PCBs ranged from 39 to 4221 ng/g lipid weight (lw) and were generally higher in adults (age >2 yr, range 969-4 221 ng/g lw) than in juveniles (age <2 yr, range 39-1815 ng/g lw). The concentrations of MeSO2-DDE were generally also higher in adults (21- 96 ng/g lw) than in juveniles (0.5-60 ng/g lw). Congeners 3- and 4-MeSO2-CB101 were the dominating metabolites in all samples. Due to their preferential retention in the liver, the MeSO2-PCB congeners could be divided into two groups. The first group was dominated by the 3-MeSO2- PCB congeners and consisted of MeSO2-CB31, -CB49, -CB52, -CB87, and -CB101, which all have a 2,5-chlorine substitution in the phenyl ring containing the methyl sulfonyl group. The second group was dominated by the 4-MeSO2-PCB congeners and consisted of MeSO2- CB64, -CB91, -CB110, and -CB132, which all have a 2,3,6- chlorine substitution. The ratios of sum of PCBs/sum ofMeSO2- PCBs and p, p¢-DDE/MeSO2-DDE differed greatly between individual subjects and ranged from 15 to 419 and from 17 to 1088, respectively. The ratio between the precursor PCB congeners and their corresponding metabolites ranged from 0.6 (CB49) to 175 (CB174). Enantiomeric fractions (EFs) for MeSO2-PCB atropisomers, which include 3-MeSO2- CB132, 3-MeSO2-CB149, 4-MeSO2-CB149, 3-MeSO2- CB174, and 4-MeSO2-CB174, were also measured in 8 out of the 19 subjects. High enantiomeric excess (EF > 0.73 or EF < 0.23) for the measured chiral MeSO2-PCB congeners was found in all samples. This result may suggest that one atropisomer may be preferentially formed in harbor porpoises or that the atropisomers are retained in a highly selective manner. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
