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首页> 外文期刊>Environmental Science & Technology >Source Apportionment of Atmospheric PAHs in the Western Balkans by Natural Abundance Radiocarbon Analysis
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Source Apportionment of Atmospheric PAHs in the Western Balkans by Natural Abundance Radiocarbon Analysis

机译：利用自然丰度放射性碳分析法分析巴尔干西部大气中多环芳烃的来源

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摘要

Progress in source apportionment of priority combustion-derived atmospheric pollutants can be made by an inverse approach to inventory emissions, namely, receptor-based compound class-specific radiocarbon analysis (CCSRA) of target pollutants. In the present study, CCSRA of the combustion-derived polycyclic aromatic hydrocarbons (PAHs) present in the atmosphere of the countries of the former republic of Yugoslavia was performed. The carbon stable isotope composition (δ~(13)C) of PAHs varied between -27.68 and -27.19per thousand, whereas Δ~(14)C values ranged from -568per thousand for PAHs sampled in Kosovo to -288per thousand for PAHs sampled in the Sarajevo area. The application of an isotopic mass balance model to these Δ~(14)C data revealed a significant contribution (35-65%) from the combustion of non-fossil material to the atmospheric PAH pollution, even in urban and industrialized areas. Furthermore, consistency was observed between the isotopic composition of PAHs obtained by high-volume sampling and those collected by passive sampling. This encourages the use of passive samplers for CCSRA applications. This marks the first time that a CCSRA investigation could be executed on a geographically wide scale, providing a quantitative field-based source apportionment, which points outthat also non-fossil combustion processes should be targeted for remedial action.
机译：优先燃烧衍生的大气污染物的源分配可以通过清单排放的逆向方法来实现，即目标污染物的基于受体的化合物类别特异性放射性碳分析（CCSRA）。在本研究中，对存在于前南斯拉夫共和国国家大气中的燃烧衍生的多环芳烃（PAH）进行了CCSRA。 PAHs的碳稳定同位素组成（δ〜（13）C）在-27.68和-27.19 /千之间变化，而Δ〜（14）C值的范围从科索沃采样的PAH的-568 /千到采样PAHs的-288 /千在萨拉热窝地区。同位素质量平衡模型在这些Δ〜（14）C数据中的应用表明，即使在城市和工业化地区，非化石材料燃烧对大气PAH污染的贡献也很大（35-65％）。此外，在通过大量采样获得的PAHs的同位素组成与通过被动采样获得的PAHs的同位素组成之间观察到一致性。这鼓励在CCSRA应用中使用无源采样器。这标志着CCSRA调查首次可以在地理上广泛地进行，提供了基于现场的定量源分配，这指出非化石燃烧过程也应以补救行动为目标。

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