10.1021/es102755x.s001
Katrin Vorkamp
Katrin
Vorkamp
Frank F. Rigét
Frank F.
Rigét
Rossana Bossi
Rossana
Bossi
Rune Dietz
Rune
Dietz
Temporal Trends of Hexabromocyclododecane, Polybrominated Diphenyl Ethers and Polychlorinated Biphenyls in Ringed Seals from East Greenland
American Chemical Society
2011
1986 value
East Greenland
polybrominated diphenyl ethers
time trends
East GreenlandConcentrations
seal blubber
Polychlorinated Biphenyls
adult seals
adult animals
1986 concentration
Polybrominated Diphenyl Ethers
data point
HBCD
time trend
1994. Σ PCB
intake rates
marine mammals
Temporal Trends
Arctic food items
2008. Σ PBDE
blubber samples
polychlorinated biphenyls
PCB concentrations
Ringed Seals
2011-02-15 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Temporal_Trends_of_Hexabromocyclododecane_Polybrominated_Diphenyl_Ethers_and_Polychlorinated_Biphenyls_in_Ringed_Seals_from_East_Greenland/2691898
Concentrations of hexabromocyclododecane (HBCD) were determined in a combination of archived and fresh blubber samples of juvenile ringed seals from East Greenland collected between 1986 and 2008. α-HBCD was the only diastereoisomer consistently above levels of quantification and showed a significant log−linear (exponential) increase from 2.0 to 8.7 ng/g lipid weight (median concentrations) with an annual rate of +6.1%. The concentrations were up to several orders of magnitude lower than those reported for marine mammals from industrialized areas. Previously presented time trends on polybrominated diphenyl ethers (PBDEs) and polychlorinated biphenyls (PCBs) have been extended with new data for 2006 and 2008. ΣPBDE in juvenile seals was the only parameter with a slight upward trend, however, dependent on the low 1986 concentration. Removing this data point resulted in a downward trend, which also was found for adult seals with a time trend starting in 1994. ΣPCB decreased significantly in juvenile seals, again due to the 1986 value, while no trend was found for the adult animals. This indicates stagnating PCB concentrations at a relatively high level, in some cases possibly exceeding tolerable daily intake rates for seal blubber as traditional Arctic food items.