Age and seasonal variability of polybrominated diphenyl ethers in free-ranging East Greenland polar bears (Ursus maritimus).

Rune Dietz, Frank F Rigét, Christian Sonne, Robert J Letcher, Sean Backus, Erik W Born, Maja Kirkegaard, Derek C G Muir

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

Udgivelsesdato: 2007-Mar
OriginalsprogEngelsk
TidsskriftEnvironmental Pollution
Vol/bind146
Udgave nummer1
Sider (fra-til)166-73
Antal sider7
ISSN0269-7491
DOI
StatusUdgivet - 1. mar. 2007
Udgivet eksterntJa

Fingeraftryk

Halogenated Diphenyl Ethers
Greenland
Ethers
Lipids
Hexachlorobenzene
Dieldrin
Weights and Measures
Poisons
Adipose Tissue
Tissue
Degradation

Citer dette

Dietz, Rune ; Rigét, Frank F ; Sonne, Christian ; Letcher, Robert J ; Backus, Sean ; Born, Erik W ; Kirkegaard, Maja ; Muir, Derek C G. / Age and seasonal variability of polybrominated diphenyl ethers in free-ranging East Greenland polar bears (Ursus maritimus). I: Environmental Pollution. 2007 ; Bind 146, Nr. 1. s. 166-73.
@article{61877d00519111ddb1a1000ea68e967b,
title = "Age and seasonal variability of polybrominated diphenyl ethers in free-ranging East Greenland polar bears (Ursus maritimus).",
abstract = "Polybrominated diphenyl ethers (PBDEs) were analysed in adipose tissue from 92 East Greenland polar bears (Ursus maritimus) sampled during 1999-2001. Mean SigmaPBDE 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 SigmaPBDE concentration. The SigmaPBDE concentration had a highly significant correlation with SigmaPCB, SigmaCHL, dieldrin, HCB and SigmaHCH concentrations. We found a seasonal pattern of median SigmaPBDE 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.",
author = "Rune Dietz and Rig{\'e}t, {Frank F} and Christian Sonne and Letcher, {Robert J} and Sean Backus and Born, {Erik W} and Maja Kirkegaard and Muir, {Derek C G}",
year = "2007",
month = "3",
day = "1",
doi = "10.1016/j.envpol.2006.05.040",
language = "English",
volume = "146",
pages = "166--73",
journal = "Environmental Pollution",
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Dietz, R, Rigét, FF, Sonne, C, Letcher, RJ, Backus, S, Born, EW, Kirkegaard, M & Muir, DCG 2007, 'Age and seasonal variability of polybrominated diphenyl ethers in free-ranging East Greenland polar bears (Ursus maritimus).', Environmental Pollution, bind 146, nr. 1, s. 166-73. https://doi.org/10.1016/j.envpol.2006.05.040

Age and seasonal variability of polybrominated diphenyl ethers in free-ranging East Greenland polar bears (Ursus maritimus). / Dietz, Rune; Rigét, Frank F; Sonne, Christian; Letcher, Robert J; Backus, Sean; Born, Erik W; Kirkegaard, Maja; Muir, Derek C G.

I: Environmental Pollution, Bind 146, Nr. 1, 01.03.2007, s. 166-73.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Age and seasonal variability of polybrominated diphenyl ethers in free-ranging East Greenland polar bears (Ursus maritimus).

AU - Dietz, Rune

AU - Rigét, Frank F

AU - Sonne, Christian

AU - Letcher, Robert J

AU - Backus, Sean

AU - Born, Erik W

AU - Kirkegaard, Maja

AU - Muir, Derek C G

PY - 2007/3/1

Y1 - 2007/3/1

N2 - Polybrominated diphenyl ethers (PBDEs) were analysed in adipose tissue from 92 East Greenland polar bears (Ursus maritimus) sampled during 1999-2001. Mean SigmaPBDE 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 SigmaPBDE concentration. The SigmaPBDE concentration had a highly significant correlation with SigmaPCB, SigmaCHL, dieldrin, HCB and SigmaHCH concentrations. We found a seasonal pattern of median SigmaPBDE 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.

AB - Polybrominated diphenyl ethers (PBDEs) were analysed in adipose tissue from 92 East Greenland polar bears (Ursus maritimus) sampled during 1999-2001. Mean SigmaPBDE 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 SigmaPBDE concentration. The SigmaPBDE concentration had a highly significant correlation with SigmaPCB, SigmaCHL, dieldrin, HCB and SigmaHCH concentrations. We found a seasonal pattern of median SigmaPBDE 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.

U2 - 10.1016/j.envpol.2006.05.040

DO - 10.1016/j.envpol.2006.05.040

M3 - Journal article

VL - 146

SP - 166

EP - 173

JO - Environmental Pollution

JF - Environmental Pollution

SN - 0269-7491

IS - 1

ER -