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在北极大气,地表水和沉积物之间,持久有机污染物的扩散流

Ian L Moran¹, Lane Tidwell¹, Michael Barton¹

¹Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, OR, USA.

The Science of the total environment

|June 3, 2023

概括

北极社区面临来自全球交通和国防站点的污染. 这项研究在阿拉斯加加姆贝尔发现了高二乙酸 (TCEP),突出了当地和全球化学来源的风险.

科学领域:

环境科学环境科学
北极研究北极研究
毒理学毒理学毒理学

背景情况:

北极社区因全球运输和以前使用的国防站点 (FUDS) 而遭受不成比例的污染物暴露.
气候变化和北极地区的发展可能会加剧现有的污染问题.
阿拉斯加圣劳伦斯岛的尤皮克人记录了对污染物的暴露,包括来自FUDS和传统食物.

研究的目的:

评估阿拉斯加加姆贝尔附近的特劳特曼湖 (Troutman Lake) 的污染物,该湖是社区关注的地点,因为它在FUDS退役期间被用作处置区域.
调查空气,水和沉积物中的特定污染物的存在和度,包括多环芳 (PAH),阻燃剂和多双 (PCB).
了解动态的北极环境中人为污染物的来源和命运.

主要方法:

利用在特劳特曼湖部署的被动采样设备收集空气,水和沉积物样本.
对未被替代和化PAH,化和有机酸盐阻燃剂以及PCB进行分析的样本.
将检测到的度与偏远的北极地区的现有文献值进行比较.

主要成果:

度很低,与其他偏远地区相比,主要是由于大气沉积造成的.
检测到化二乙烯-47和三酸,其度与其他偏远地区发现的度相等或低.
与之前的北极研究相比,测定了显著更高的三2-乙烯酸盐 (TCEP) 大气度 (0.75-2.8 ng/m3),在特劳特曼湖 (290-1300 ng/m2/day) 沉积大量.
在分析的样本中没有检测到PCB.

结论:

研究结果表明,当代和传统的化学物质来自北极地区的本地和全球来源的相关性.
提升的TCEP水平表明潜在的当地或区域来源有助于大气污染.
该研究为了解北极系统中的污染物命运提供了关键数据,为社区,政策制定者和科学家提供了信息.

关键词:

北极地区的化学物质流动社区从事的研究.有机酸盐 Ester 是一种有机酸盐.被动抽样是一种被动抽样.多环芳香碳化合物多环芳香碳化合物

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