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首页> 外文期刊>Environmental Science & Technology >Modeling the Formation, Degradation, and Spatiotemporal Distribution of 2-Nitrofluoranthene and 2-Nitropyrene in the Global Atmosphere
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Modeling the Formation, Degradation, and Spatiotemporal Distribution of 2-Nitrofluoranthene and 2-Nitropyrene in the Global Atmosphere

机译：在全球气氛中建模2-硝基氟蒽和2-硝基丁烯的形成，降解和时空分布

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摘要

Polycyclic aromatic hydrocarbons (PAHs) are common atmospheric pollutants and known to cause adverse health effects. Nitrated PAHs (NPAHs) are formed in combustion activities and by nitration of PAHs in the atmosphere and may be equally or more toxic, but their spatial and temporal distribution in the atmosphere is not well characterized. Using the global EMAC model with atmospheric chemistry and surface compartments coupled, we investigate the formation, abundance, and fate of two secondarily formed NPAHs, 2-nitrofluoranthene (2-NFLT) and 2-nitropyrene (2-NPYR). The default reactivity scenario, the model with the simplest interpretation of parameters from the literature, tends to overestimate both absolute concentrations and NPAH/PAH ratios at observational sites. Sensitivity scenarios indicate that NO_2-dependent NPAH formation leads to better agreement between measured and predicted NPAH concentrations and that photodegradation is the most important loss process of 2-NFLT and 2-NPYR. The highest concentrations of 2-NFLT and 2-NPYR are found in regions with strong PAH emissions, but because of continued secondary formation from the PAH precursors, these two NPAHs are predicted to be spread across the globe.
机译：多环芳烃（PAHS）是常见的大气污染物，已知会导致不良健康影响。硝化的PAHS（NPAH）形成在燃烧活动中，并通过大气中的PAHS硝化，并且可以同样或更大毒性，但它们在大气中的空间和时间分布并不具备很好的表征。使用具有大气化学和表面隔间的全球EMAC模型耦合，我们研究了两种形成的NPAH，2-氮氟（2-NFLT）和2-硝基（2-NPYR）的形成，丰度和命运。默认反应性方案，具有最简单解释的模型来自文献的最简单解释，往往估计观察位点的绝对浓度和NPAH / PAH比率。敏感性情景表明，NO_2依赖性NPAH形成导致测量和预测的NPAH浓度之间更好地同意，并且光降解是2-NFLT和2-NPYR最重要的损失过程。在具有强大的PAH排放的区域中发现了2-NFLT和2-NPYR的最高浓度，但由于PAH前体的持续二次形成，预计这两个NPAA草将遍布全球。

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  • 来源
    《Environmental Science & Technology》 |2020年第22期|14224-14234|共11页
  • 作者

    Jake Wilson; Mega Octaviani; Benjamin A. Musa Bandowe; Marco Wietzoreck; Cornelius Zetzsch; Ulrich Poeschl; Thomas Berkemeier; Gerhard Lammel;

  • 作者单位

    Multiphase Chemistry Department Max Planck Institute for Chemistry 55128 Mainz Germany;

    Multiphase Chemistry Department Max Planck Institute for Chemistry 55128 Mainz Germany;

    Multiphase Chemistry Department Max Planck Institute for Chemistry 55128 Mainz Germany;

    Multiphase Chemistry Department Max Planck Institute for Chemistry 55128 Mainz Germany;

    Multiphase Chemistry Department Max Planck Institute for Chemistry 55128 Mainz Germany Bayreuth Centre for Ecology and Environmental Research University of Bayreuth 95448 Bayreuth Germany;

    Multiphase Chemistry Department Max Planck Institute for Chemistry 55128 Mainz Germany;

    Multiphase Chemistry Department Max Planck Institute for Chemistry 55128 Mainz Germany;

    Multiphase Chemistry Department Max Planck Institute for Chemistry 55128 Mainz Germany Research Centre for Toxic Compounds in the Environment Masaryk University 62500 Brno Czech Republic;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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