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首页> 外文期刊>Environmental toxicology and chemistry >Passive air sampling of polycyclic aromatic hydrocarbons and polychlorinated naphthalenes across Europe.
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Passive air sampling of polycyclic aromatic hydrocarbons and polychlorinated naphthalenes across Europe.

机译：欧洲范围内的多环芳烃和多氯萘的被动空气采样。

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摘要

This study presents concurrently sampled ambient air data for a range of polycyclic aromatic hydrocarbons (PAHs) and polychlorinated naphthalenes (PCNs) at the continental scale. This was achieved with a passive air sampling system, by deploying polyurethane foam disks, which were prepared in one laboratory, sealed to prevent contamination, sent out by courier to volunteers participating in different countries, exposed for six weeks, collected, resealed, and returned to the laboratory for analysis. The study area was Europe, a region with a history of extensive persistent organic pollutants usage and emission, and with marked national differences in population density, the degree of urbanization and industrial and agricultural development. Samplers were deployed at remote, rural, and urban locations in 22 countries. Calculated air concentrations were broadly in line with those obtained by conventional active air sampling techniques, for both compound classes and for compounds existing predominantly in the gas and particle phases. The geographical compound distribution reflected suspected regional emission patterns and highlighted localized source areas. Both PAH and PCN levels varied by more than two orders of magnitude. The implications for sources are discussed.
机译：这项研究提供了在大陆范围内同时采样的一系列多环芳烃（PAH）和多氯萘（PCN）的环境空气数据。这是通过使用被动空气采样系统来实现的，方法是部署聚氨酯泡沫盘，该泡沫盘是在一个实验室中准备的，密封以防止污染，由快递员发送给不同国家的志愿者，暴露了六周，收集，重新密封并返回到实验室进行分析。研究区域是欧洲，该地区具有广泛的持久性有机污染物使用和排放的历史，并且在人口密度，城市化程度以及工农业发展方面存在明显的国家差异。采样器部署在22个国家的偏远，农村和城市地区。对于化合物类别以及主要存在于气相和颗粒相中的化合物，计算出的空气浓度与通过常规主动空气采样技术获得的空气浓度基本一致。地理化合物分布反映了可疑的区域排放模式，并突出了局部来源区域。 PAH和PCN的水平变化都超过两个数量级。讨论了对源的影响。

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