Detailed analysis of polybrominated biphenyl congeners in bird eggs from Norway |
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Authors: | Vetter Walter von der Recke Roland Herzke Dorte Nygård Torgeir |
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Institution: | a University of Hohenheim, Institute of Food Chemistry, Garbenstrasse 28, DE-70593 Stuttgart, Germany b Norwegian Institute for Air Research (NILU), NO-9296 Tromsø, Norway c Norwegian Institute for Nature Research (NINA), Tungasletta 2, NO-7485 Trondheim, Norway |
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Abstract: | Individual eggs of six species of birds from Norway representing different food chains were analysed for residues of polybrominated biphenyls (PBBs). In all species, the residue pattern was dominated by hexaBBs. The dominating congeners were PBB 153, PBB 154, and PBB 155. Whereas PBB 153 is present in technical hexabromobiphenyl, PBB 154 and PBB 155 are formed by the reductive debromination of decabromobiphenyl. This was evidenced by the detection of several heptaBBs and octaBBs all of which are typical degradation intermediates of PBB 209. Hepta- and octaBBs were more than one order of magnitude less abundant than the hexaBBs. The second most prevailing homologue group was pentaBBs. The most relevant pentabrominated isomers were PBB 99 and PBB 101. Concentrations of the three hexaBBs - PBB 153, PBB 154, and PBB 155 - amounted to 1.3-13 ng/g wet weight or 3-23% of the contamination with polybrominated diphenyl ethers. |
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Keywords: | Brominated flame retardants Polybrominated biphenyls PBB congeners Bird eggs Congener specific analysis GC/ECNI-MSMS Tandem mass spectrometry |
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