加拿大各地掠食性淡水鱼中的有机磷阻燃剂和有机硅氧烷。
Organophosphate flame retardants and organosiloxanes in predatory freshwater fish from locations across Canada.
机构信息
Water Science and Technology Directorate, Environment Canada, Burlington, ON, L7R 4A6, Canada.
Ecotoxicology and Wildlife Health Division, Science and Technology Branch, Environment Canada, National Wildlife Research Centre, Carleton University, Ottawa, ON, K1A 0H3, Canada.
出版信息
Environ Pollut. 2014 Oct;193:254-261. doi: 10.1016/j.envpol.2014.06.024. Epub 2014 Jul 24.
Whole body homogenates of Lake Trout (Salvelinus namaycush) or Walleye (Sander vitreus) collected from Canadian lakes were screened for organophosphate flame retardant (OPFR) and organosiloxane compounds. Six OPFR and five siloxane compounds were detected above quantitation limits in at least one individual fish from sampled lakes. The OPFRs, tris(2-chloroethyl) phosphate (TCEP) and tris(2-butoxyethyl) phosphate (TBOEP), were most frequently quantified with concentrations ranging from <0.07 to 9.8 ng/g (ww). Levels of TBOEP were highest in fish from the Great Lakes region while TCEP was detected only in fish from the northernmost lakes in our network. Concentrations of the cyclic siloxanes, octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5) and dodecamethylcyclohexasiloxane (D6), were above quantitation limits in all fish. D5 was the most abundant siloxane across all sampling locations with the highest concentrations (45-719 ng/g ww) observed in Lake Trout from the western end of Lake Ontario near the mouth of the Niagara River.
从加拿大湖泊中采集的湖鳟（Salvelinus namaycush）或大眼梭鲈（Sander vitreus）的全身匀浆被筛选出有机磷酸酯阻燃剂（OPFR）和有机硅氧烷化合物。在采样湖中至少有一个个体鱼的样本中检测到六种 OPFR 和五种硅氧烷化合物超过定量限。OPFR 中，三（2-氯乙基）磷酸酯（TCEP）和三（2-丁氧基乙基）磷酸酯（TBOEP）的浓度范围为<0.07 至 9.8ng/g（ww），是最常被定量检测到的。TBOEP 的水平在五大湖地区的鱼类中最高，而 TCEP 仅在我们网络中最北部湖泊的鱼类中检测到。环状硅氧烷，八甲基环四硅氧烷（D4）、十甲基环五硅氧烷（D5）和十二甲基环己硅氧烷（D6）的浓度在所有鱼类中均超过定量限。在所有采样地点，D5 都是最丰富的硅氧烷，在尼亚加拉河河口附近安大略湖西端的湖鳟中观察到的浓度最高（45-719ng/g ww）。
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