Environmental Fisheries and Sciences Division, Northwest Fisheries Science Center, National Marine Fisheries, National Oceanic and Atmospheric Administration, 2725 Montlake Boulevard East, Seattle, WA 98112, USA.
Environmental Fisheries and Sciences Division, Northwest Fisheries Science Center, National Marine Fisheries, National Oceanic and Atmospheric Administration, 2725 Montlake Boulevard East, Seattle, WA 98112, USA.
Mar Pollut Bull. 2020 Aug;157:111284. doi: 10.1016/j.marpolbul.2020.111284. Epub 2020 May 29.
Aluminum smelter-derived polycyclic aromatic hydrocarbons (PAHs) in outmigrant juvenile Chinook salmon were evaluated in Kitimat Arm, British Columbia, Canada from 2000 to 2004, and in 2015. Decades of continual smelter operations by Rio Tinto resulted in PAH contamination of marine sediments at levels associated with adverse effects in juvenile salmon. Recently, smelter operations have undergone process changes to reduce PAH input to the environment. The PAH concentrations in juvenile Chinook salmon observed in 2000 to 2004, at sites nearest the smelter were comparable to salmon in other urban areas where reduced disease resistance was observed; the levels were lower in 2015 than 2000-2004 suggesting that the recent process changes were effective. Further, these data establish a benchmark for assessing any future changes affecting PAH input and the potential risks to the receiving environment.
2000 年至 2004 年期间，在加拿大不列颠哥伦比亚省基蒂马特湾评估了来自炼铝厂的多环芳烃 (PAH) 在洄游幼三文鱼中的情况，并于 2015 年再次进行了评估。几十年来，力拓公司持续的冶炼作业导致海洋沉积物中 PAH 污染程度与幼三文鱼的不良反应相关联。最近，冶炼作业已经进行了工艺改革，以减少对环境的 PAH 输入。在最接近冶炼厂的地点，2000 年至 2004 年期间观察到的幼三文鱼体内的 PAH 浓度与在其他观察到抗病能力降低的城市地区的三文鱼相当；2015 年的浓度低于 2000-2004 年，这表明最近的工艺改革是有效的。此外，这些数据为评估任何未来影响 PAH 输入和接收环境潜在风险的变化建立了基准。
