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Compilation of a source profile database for hydrocarbon and OVOC emissions in China

机译：编制了中国碳氢化合物和OVOC排放量的来源资料数据库

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摘要

Source profiles are essential for quantifying the role of volatile organic compound (VOC) emissions in air pollution. This study compiled a database of VOC source profiles in China, with 75 species drawn from five major categories: transportation, solvent use, biomass burning, fossil fuel burning, and industrial processes. Source profiles were updated for diesel vehicles, biomass burning, and residential coal burning by measuring both hydrocarbons and oxygenated VOCs (OVOCs), while other source profiles were derived from the available literature. The OVOCs contributed 53.8% of total VOCs in the profiles of heavy duty diesel vehicle exhaust and 12.4%-46.3% in biomass and residential coal burning, which indicated the importance of primary OVOCs emissions from combustion-related sources. Taking the national emission inventory from 2008 as an example, we established an approach for assigning source profiles to develop a speciation-specific VOC and OVOC emission inventory. The results showed that aromatics contributed 30% of the total 26 Tg VOCs, followed by alkanes (24%), alkenes (19%) and OVOCs (12%). Aromatics (7.9 Tg) were much higher than in previous results (1.1 Tg and 3.4 Tg), while OVOCs (3.1 Tg) were comparable with the 33 Tg and 43 Tg reported in studies using, profiles from the US. The current emission inventories were built based on emission factors from non-methane hydrocarbon measurements, and therefore the proportions from OVOC emissions was neglected, leading to up to 30% underestimation of total VOC emissions. As a result, there is a need to deploy appropriate emission factors and source profiles that include OVOC measurements to reduce the uncertainty of estimated emissions and chemical reactivity potential. (C) 2016 Published by Elsevier Ltd.
机译：源轮廓对于量化挥发性有机化合物（VOC）排放在空气污染中的作用至关重要。这项研究建立了中国VOC来源概况数据库，该数据库从以下五个主要类别中提取了75种：运输，溶剂使用，生物质燃烧，化石燃料燃烧和工业过程。通过测量碳氢化合物和含氧挥发性有机化合物（OVOC），更新了柴油车，生物质燃烧和民用燃煤的排放源资料，而其他排放源资料则来自现有文献。在重型柴油车辆尾气中，挥发性有机化合物占总挥发性有机化合物的53.8％，在生物质和民用燃煤中占12.4％-46.3％，这表明燃烧相关来源的主要挥发性有机化合物的重要性。以2008年以来的国家排放清单为例，我们建立了一种分配源配置文件的方法，以开发针对特定物种的VOC和OVOC排放清单。结果表明，芳烃占26 Tg VOC总量的30％，其次是烷烃（24％），烯烃（19％）和OVOC（12％）。芳香族化合物（7.9 Tg）比以前的结果（1.1 Tg和3.4 Tg）要高得多，而OVOC（3.1 Tg）与美国研究报告的33 Tg和43 Tg相当。当前的排放清单是基于非甲烷碳氢化合物测量的排放因子建立的，因此忽略了OVOC排放的比例，导致低估了VOC总排放量30％。结果，需要部署包括OVOC测量值在内的合适的排放因子和源剖面，以减少估计的排放量和化学反应潜力的不确定性。 （C）2016由Elsevier Ltd.出版

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  • 来源
    《Atmospheric environment》 |2016年第10期|209-217|共9页
  • 作者

    Mo Ziwei; Shao Min; Lu Sihua;

  • 作者单位

    Peking Univ, Coll Environm Sci & Engn, State Joint Key Lab Environm Simulat & Pollut Con, Beijing 100871, Peoples R China;

    Peking Univ, Coll Environm Sci & Engn, State Joint Key Lab Environm Simulat & Pollut Con, Beijing 100871, Peoples R China;

    Peking Univ, Coll Environm Sci & Engn, State Joint Key Lab Environm Simulat & Pollut Con, Beijing 100871, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    VOC; OVOC; Source profile; Speciated emission inventory; China;

    机译：挥发性有机化合物;挥发性有机化合物;来源概况;特定排放清单;中国;

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