Environment Canada, Centre Saint-Laurent, 105 McGill Street, Montreal, QC H2Y 2E7, Canada.
Direction du suivi de l'état de l'environnement, Ministère du Développement durable, de l'Environnement, de la Faune et des Parcs, 675, boul. René-Lévesque Est, 7e étage, Québec, QC G1R 5V7, Canada.
Sci Total Environ. 2014 May 1;479-480:48-56. doi: 10.1016/j.scitotenv.2014.01.105. Epub 2014 Feb 15.
Restrictions in the utilization of polybrominated diphenyl ether (PBDE) mixtures have led to the increased usage of alternative flame retardant additives in a wide range of commercial applications. The present study examined the occurrence of established and emerging flame retardants (FRs) in fish from a densely-populated urbanized sector of the St. Lawrence River (Montreal, Quebec, Canada). Thirty-eight PBDE congeners and sixteen emerging FRs were determined in fish belonging to three predatory species (yellow perch, northern pike, and muskellunge). The ∑PBDE in fish were up to 24,115 ng/g lipid weight (l.w.) in the apex predator muskellunge. Twelve emerging FRs including bis(2-ethylhexyl)-tetrabromophthalate (BEHTBP), pentabromoethylbenzene (PBEB), Dechlorane Plus (anti and syn), dechloranes (Dec) 602, Dec 604, Dec 604 Compound B (Dec 604 CB), and Chlordene Plus (CP) were detected (>0.01 ng/gl.w.) in the liver of muskellunge and northern pike but not in yellow perch homogenates. This is the first report of Dec 604 CB in any fish species. The bioavailability of these FRs in human-impacted aquatic ecosystems warrants further environmental assessment and toxicity testing.
多溴二苯醚 (PBDE) 混合物的使用限制导致各种商业应用中替代阻燃添加剂的使用增加。本研究调查了圣劳伦斯河（加拿大魁北克省蒙特利尔市）城市化程度较高的区域鱼类中已确立和新兴阻燃剂 (FRs) 的存在情况。对属于三种掠食性鱼类（黄鲈、北方梭鲈和大口黑鲈）的鱼进行了 38 种 PBDE 同系物和 16 种新兴 FR 的测定。在顶级掠食者大口黑鲈中，∑PBDE 达 24115ng/g 脂质重量 (l.w.)。在大口黑鲈和北方梭鲈的肝脏中检测到了 12 种新兴 FR，包括双（2-乙基己基）四溴邻苯二甲酸酯 (BEHTBP)、五溴乙基苯 (PBEB)、氯丹 Plus（反式和顺式）、氯丹（Dec）602、Dec 604、Dec 604 化合物 B (Dec 604 CB) 和氯丹加（CP）（>0.01ng/g l.w.），但在黄鲈匀浆中未检测到。这是首次在任何鱼类中报告发现 Dec 604 CB。这些 FR 在受人类影响的水生生态系统中的生物利用度需要进一步进行环境评估和毒性测试。
