Regulated and Unregulated Halogenated Flame Retardants in Peregrine Falcon Eggs from Greenland

• Published in: Environmental Science & Technology
• Main Authors: Vorkamp, Katrin, Falk, Knud, Møller, Søren, Rigét, Frank F, Sørensen, Peter B
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2018
• Subjects: Journal Article; Greenland; Falco peregrinus; peregrine falcon
• Online Access: https://pure.au.dk/portal/en/publications/a29acbef-5dd6-4da0-9e20-d80825e48dde; https://doi.org/10.1021/acs.est.7b04866; http://www.scopus.com/inward/record.url?scp=85041439943&partnerID=8YFLogxK

Median levels of regulated flame retardants, i.e., polybrominated diphenyl ethers (PBDEs), brominated biphenyl (BB)-153, and hexabromocyclododecane (HBCD), in 33-48 eggs of peregrine falcons (Falco peregrinus) from Greenland were 1909, 359, and 5.98 ng/g lipid weight (lw), respectively, and generally intermediate to levels in North America and Europe. Unregulated flame retardants had lower median concentrations of 1.06 (2-ethylhexyl-2,3,4,5-tetrabromobenzoate, EH-TBB), 2.42 (1,2-bis(2,4,6-tribromophenoxy)-ethane, BTBPE), 0.52 (2,4,6-tribromophenyl 2,3-dibromopropyl ether, DPTE), and 4.78 (dechlorane plus) ng/g lw. Although these compounds are often described as recent replacements for PBDEs, they were also present in eggs from the 1980s. BDE-209 was the only compound with a significant increase (+7.2% annual change) between 1986 and 2014, while BB-153 and DPTE decreased significantly (-8.0% and -2.8% annual change, respectively). Dechlorane plus showed a nonsignificant increase. Individual birds, equipped with light-logging geolocators, confirmed the contaminant exposure over a large geographical area as the birds spent nearly equal time periods in their breeding and wintering grounds in Greenland and Central/South America, respectively, interrupted by 5-6 weeks of migration through North America.