Concentrations of PBDE and BDE congeners in adipose tissue of East Greenland polar bears (Ursus maritimus)

Polybrominated diphenyl ethers (PBDEs) were analysed in adipose tissue from 92 East Greenland polar bears (Ursus maritimus) sampled during 1999-2001. Mean SumPBDE concentrations were 70 ng/g lipid weight (lw) (range: 22-192 ng/g lw) and showed no relationship with age or sex. Of the 32 analysed PBDE...

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Bibliographic Details
Main Authors: Dietz, Rune, Rigét, Frank F, Sonne, Christian, Letcher, Robert J, Backus, S, Born, Erik W, Kirkegaard, Maja, Muir, Derek C G
Format: Dataset
Language:English
Published: PANGAEA 2007
Subjects:
Biological sample
BIOS
East Greenland
International Polar Year (2007-2008)
IPY
ScoresbyS_area
Greenland
International Polar Year
Ursus maritimus
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.808815
https://doi.org/10.1594/PANGAEA.808815
Description
Summary:Polybrominated diphenyl ethers (PBDEs) were analysed in adipose tissue from 92 East Greenland polar bears (Ursus maritimus) sampled during 1999-2001. Mean SumPBDE concentrations were 70 ng/g lipid weight (lw) (range: 22-192 ng/g lw) and showed no relationship with age or sex. Of the 32 analysed PBDE congeners; BDE47, BDE153, BDE99 and BDE100 dominated, and comprised 99.6% of the SumPBDE concentration. The SumPBDE concentration had a highly significant correlation with SumPCB, SumCHL, dieldrin, HCB and SumHCH concentrations. We found a seasonal pattern of median SumPBDE concentration with 1.2 to 1.8 times higher concentrations in March to July than the rest of the year. The seasonal variation also provides a clue to the seasonal exposure, bio-availability, toxic exposure and degradation. We suggest that future geographical PBDE data comparisons may not need corrections for sex or age, but such data sets should be corrected for seasonal variability, using the presented correctional trigonometric regression.

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