Ecotoxicology and Wildlife Health Division, Environment Canada, National Wildlife Research Centre, Carleton University, Ottawa, ON K1A 0H3, Canada.
Environ Pollut. 2012 Sep;168:1-9. doi: 10.1016/j.envpol.2012.03.040. Epub 2012 May 10.
To compare legacy and emerging flame retardant (FR) contamination in Canadian marine and freshwater ecosystems, eggs of four gull species (Laridae) were collected from 26 colonies spanning Pacific to Atlantic Canada, including in the Great Lakes basin. Fourteen polybrominated diphenyl ether (PBDE) congeners and 20 non-PBDE FRs were analyzed, but BDE-47, -99, -100, -153, -154 and -209, hexabromocyclododecane (HBCD) and Dechlorane Plus (DP) syn- and anti-isomers were common, and where concentrations of ∑PBDEs (37-610 ng/g wet weight, ww) ≫ HBCD (0.5-12 ng/g ww) > ∑DP (not quantifiable-5.5 ng/g ww). All other FRs were generally not detectable. Stable nitrogen and carbon isotopes used as dietary tracers provided insights into the diet choice influences on the exposure sources and contamination patterns (e.g., PBDE congener compositions) for individual gulls from the same colony. Eggs from gulls breeding near metropolitan regions of higher human densities showed greater PBDE burdens than from other ecosystems.
为了比较加拿大海洋和淡水生态系统中传统和新兴阻燃剂（FR）的污染情况，从加拿大从太平洋到大西洋的 26 个殖民地（包括大湖区）收集了四种海鸥物种（鸥科）的卵。分析了 14 种多溴二苯醚（PBDE）同系物和 20 种非 PBDE FRs，但 BDE-47、-99、-100、-153、-154 和 -209、六溴环十二烷（HBCD）和 Dechlorane Plus（DP）顺式和反式异构体很常见，而且∑PBDEs（37-610 ng/g 湿重，ww）的浓度> HBCD（0.5-12 ng/g ww）>∑DP（不可量化-5.5 ng/g ww）。其他所有 FR 通常都无法检测到。用作饮食示踪剂的稳定氮和碳同位素为了解个体海鸥从同一殖民地的饮食选择对暴露源和污染模式（例如 PBDE 同系物组成）的影响提供了线索。在人类密度较高的大都市区附近繁殖的海鸥的卵中，PBDE 含量高于其他生态系统。
