|Mono-ortho and non-ortho substituted PCBs in Arctic ringed seal (Phoca hispida) from the Svalbard area: analysis and determination of their toxic threat|Daelemans, F.F.; Mehlum, F.; Lydersen, C.; Schepens, P.J.C. (1993). Mono-ortho and non-ortho substituted PCBs in Arctic ringed seal (Phoca hispida) from the Svalbard area: analysis and determination of their toxic threat. Chemosphere 27(1-3): 429-437. dx.doi.org/10.1016/0045-6535(93)90323-W
In: Chemosphere. Elsevier: Oxford. ISSN 0045-6535, more
RINGED SEAL; COPLANAR PCBS; TEQ VALUES; GC-MS-SIM
|Authors|| || Top |
- Daelemans, F.F.
- Mehlum, F.
- Lydersen, C.
- Schepens, P.J.C.
To determine the 2,3,7,8-tetrachloro-dibenzo-p-dioxin (2,3,7,8-TCDD) toxic equivalent (TEQ) of the PCBs in ringed seal, we analysed liver, blubber and kidney for non-ortho and mono-ortho substituted CBs as well as the total PCB and total DDE concentration. The blubber samples were compared with ringed seal blubber samples from another study1,2, in which total PCB and PCDD/PCDF concentrations were measured, and the TEQ values for the PCBs in our samples were 11 times higher than the TEQ values for the PCDDs/PCDFs in the other seal samples. Comparing the 3 different seal matrices, we found no significant difference in PCB pattern; the absolute concentrations expressed per unit lipid weight were for the females in the following order : blubber ≈ liver > kidney. We found another order for the males: blubber > liver > kidney. Among the different seals, there was a good PCB-sex correlation indicating that the results of different studies, without specific background information, must be compared with great caution.