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首页> 外文期刊>Environmental Science & Technology >Antarctic Research Bases: Local Sources of Polybrominated Diphenyl Ether (PBDE) Flame Retardants
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Antarctic Research Bases: Local Sources of Polybrominated Diphenyl Ether (PBDE) Flame Retardants

机译：南极研究基地：多溴联苯醚（PBDE）阻燃剂的本地来源

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Contemporary studies of chemical contamination in Antarctica commonly focus on remnants of historical local releases or long-range transport of legacy pollutants. To protect the continent's pristine status, the Antarctic Treaty's Protocol on Environmental Protection prohibits importation of persistent organic pollutants. However, some polybrominated diphenyl ether (PBDE) congeners exhibit similar properties. Many modern polymer-containing products, e.g., home/office furnishings and electronics, contain percent levels of flame retardant PBDEs. PBDE concentrations in indoor dust and wastewater sludge from the U.S. McMurdo and New Zealand-operated Scott Antarctic research bases were high. Levels tracked those in sludge and dust from their respective host countries. BDE-209, the major constituent in the commercial deca-PBDE product, was the dominant congener in sludge and dust, as well as aquatic sediments collected near the McMurdo wastewater outfall. The pattern and level of BDE-209 sediment concentrations, in conjunction with its limited environmental mobility, suggest inputs from local sources. PBDE concentrations in fish and invertebrates nearthe McMurdo outfall rivaled those in urbanized areas of North America and generally decreased with distance. The data indicate that reliance on wastewater maceration alone, as stipulated by the Protocol, may permit entry of substantial amounts of PBDEs and other chemicals to the Antarctic environment.
机译：对南极洲化学污染的当代研究通常集中在历史性本地排放或遗留污染物的长距离运输的残余物上。为了保护非洲大陆的原始地位，《南极条约环境保护议定书》禁止进口持久性有机污染物。但是，某些多溴二苯醚（PBDE）同源物表现出相似的特性。许多现代的含聚合物产品，例如家庭/办公室家具和电子产品，都含有百分含量的阻燃多溴二苯醚。美国麦克默多和新西兰经营的斯科特南极研究基地的室内灰尘和废水污泥中的多溴二苯醚浓度很高。水平跟踪了各自东道国的污泥和灰尘中的污染物。 BDE-209是商用十溴联苯醚产品中的主要成分，是污泥和灰尘以及在麦克默多废水排放口附近收集的水生沉积物的主要同源物。 BDE-209沉积物浓度的模式和水平，以及其有限的环境流动性，提示了当地来源的投入。麦克默多（McMurdo）出水口附近鱼类和无脊椎动物中的多溴二苯醚浓度与北美城市地区的多溴二苯醚浓度相当，并且随着距离的增加而降低。数据表明，根据《议定书》的规定，仅依靠废水浸渍就可以使大量的多溴二苯醚和其他化学品进入南极环境。

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