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首页> 外文期刊>Ambio: A Journal of the Human Environment >Sources, Fate, and Toxic Hazards of Oxygenated Polycyclic Aromatic Hydrocarbons (PAHs) at PAH-contaminated Sites
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Sources, Fate, and Toxic Hazards of Oxygenated Polycyclic Aromatic Hydrocarbons (PAHs) at PAH-contaminated Sites

机译：受到多环芳烃污染的场所中的氧化多环芳烃（PAHs）的来源，命运和有毒危害

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In this paper we show that oxygenated polycyclic aromatic hydrocarbons (oxy-PAHs) are important cocon-taminants that should be taken into account during risk assessment and remediation of sites with high levels of PAHs. The presented data, which have been collected both from our own research and the published literature, demonstrate that oxy-PAHs are abundant but neglected contaminants at these sites. The oxy-PAHs show relatively high persistency and because they are formed through transformation of PAHs, their concentrations in the environment may even increase as the sites are remediated by methods that promote PAH degradation. Furthermore, we show that oxy-PAHs are toxic to both humans and the environment, although the toxicity seems to be manifested through other effects than those known to be important for polycyclic aromatic compounds in general, that is, mutagenicity and carcinogenicity. Finally, we present data that support the hypothesis that oxy-PAHs are more mobile in the environment than PAHs, due to their polarity, and thus have a higher tendency to spread from contaminated sites via surface water and groundwater. We believe that oxy-PAHs should be included in monitoring programs at PAH-contaminated sites, even if a number of other toxicologically relevant compounds that may also be present, such as nitro-PAHs and azaarenes, are not monitored. This is because oxy-PAH levels are difficult to predict from the PAH levels, because their environmental behavior differs substantially from that of PAHs, and oxy-PAHs may be formed as PAHs are degraded.
机译：在本文中，我们证明了氧化多环芳烃（oxy-PAHs）是重要的共污染物，应在风险评估和高PAHs位点修复过程中予以考虑。所提供的数据已从我们自己的研究和已发表的文献中收集，表明在这些位置上氧-PAHs含量很高，但被忽略了污染物。氧基-PAHs表现出较高的持久性，并且由于它们是通过PAHs的转化形成的，因此在环境中它们的浓度甚至可能随着促进PAH降解的方法修复位点而增加。此外，我们证明了氧基-PAHs对人类和环境均具有毒性，尽管该毒性似乎是通过其他作用而不是通常对多环芳族化合物重要的那些作用来表现出来的，即致突变性和致癌性。最后，我们提供的数据支持以下假设，即氧-PAHs由于其极性在环境中比PAHs具有更多的移动性，因此有更高的趋势从受污染的地方通过地表水和地下水扩散。我们认为，即使未监测到许多其他可能与毒性相关的化合物，例如硝基-PAHs和氮杂，也应将氧-PAHs纳入受PAH污染的场所的监测程序中。这是因为难以根据PAH的含量预测oxy-PAH的含量，因为它们的环境行为与PAH的行为大不相同，并且随着PAH的降解可能会形成oxy-PAHs。

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