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首页> 外文期刊>The Science of the Total Environment >Improving VOCs control strategies based on source characteristics and chemical reactivity in a typical coastal city of South China through measurement and emission inventory
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Improving VOCs control strategies based on source characteristics and chemical reactivity in a typical coastal city of South China through measurement and emission inventory

机译：通过测量和排放清单，改善基于源特征和化学反应性的VOCS控制策略

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摘要

In China, the corresponding control directives for volatile organic compounds (VOCs) have been based on primary emissions, rarely considering reactive speciation. To seek more effective VOCs control strategies, we investigated 107 VOC species in a typical coastal city (Beihai) of South China, from August to November 2018. Meanwhile, a high-resolution anthropogenic VOCs monthly emission inventory (EI) was established for 2018. For source apportionments (SAs) reliability, comparisons of source structures derived from positive matrix factorization (PMF) and EI were made mainly in terms of reaction losses, uncertainties and specific ratios. Finally, for the source-end control, a comprehensive reactivity control index (RCI) was established by combing SAs with reactive speciation profiles. Ambient measurements showed that the average concentration of VOCs was 26.38 ppbv, dominated by alkanes (36.7%) and oxygenated volatile organic compounds (OVOCs) (29.4%). VOC reactivity was estimated using ozone formation potential (52.35 ppbv) and propylene-equivalent concentration (4.22 ppbv). EI results displayed that the entire VOC, OFP, and propylene-equivalent emissions were 40.98 Gg, 67.98 Gg, and 105.93 Gg, respectively. Comparisons of source structures indicated that VOC SAs agreed within ±100% between two perspectives. Both PMF and EI results showed that petrochemical industry (24.0% and 33.0%), food processing and associated combustion (19.1% and 29.2%) were the significant contributors of anthropogenic VOCs, followed by other industrial processes (22.2% and 13.3%), transportation (18.9% and 12.0%), and solvent utilization (9.1% and 10.5%). Aimed at VOCs abatement according to RCI: for terminal control, fifteen ambient highly reactive species (predominantly alkenes and alkanes) were targeted; for source control, the predominant anthropogenic sources (food industry, solvent usage, petrochemical industry and transportation) and their emitted highly reactive species were determined. Particularly, with low levels of ambient VOC and primary emissions, in this VOC and NOx double-controlled regime, crude disorganized emission from food industry contributed a high RCI.
机译：在中国，挥发性有机化合物（VOC）的相应对照指令已经基于初级排放，很少考虑反应性。为了寻求更有效的VOCS控制策略，我们从8月到2018年11月在南方南方典型的沿海城市（北海）调查了107张VOC物种。同时，2018年成立了高分辨率人为VOCS月度排放量库存（EI）。对于源分配（SAS）可靠性，主要就反应损失，不确定性和特定比率而产生的源极矩阵分解（PMF）和EI的源结构的比较。最后，对于源极控制，通过将SA与无功形态谱进行梳理SA来建立综合反应性控制指数（RCI）。环境测量结果表明，VOC的平均浓度为26.38ppbv，由烷烃（36.7％）和含氧挥发性有机化合物（OVOC）为主（29.4％）。使用臭氧地层电位（52.35ppbv）和丙烯 - 当量浓度（4.22ppbv）估计VOC反应性。 EI结果显示，整个VOC，OFP和丙烯 - 等效排放分别为40.98gg，67.98 gg和105.93 gg。源结构的比较表明，VOC SAS在两个观点之间的±100％内商定。 PMF和EI结果表明，石化工业（24.0％和33.0％），食品加工和相关燃烧（19.1％和29.2％）是人为VOCs的重要贡献，其次是其他工业过程（22.2％和13.3％），运输（18.9％和12.0％）和溶剂利用率（9.1％和10.5％）。旨在根据RCI的VOCS减少：对于终端控制，靶向十五个环境高度反应性物质（主要是烯烃和烷烃）;对于源对照，确定主要的人体化源（食品工业，溶剂使用，石化工业和运输）及其发出的高反应性物种。特别是，在这个VOC和NOX双控制度中，食品工业的原油紊乱排放较低，尤其是环境VOC和初级排放量低，贡献了高RCI。

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  • 来源
    《The Science of the Total Environment》 |2020年第20期|140825.1-140825.12|共12页
  • 作者

    Shuang Fu; Meixiu Guo; Jinmin Luo; Deming Han; Xiaojia Chen; Haohao Jia; Xiaodan Jin; Haoxiang Liao; Xin Wang; Linping Fan; Jinping Cheng;

  • 作者单位

    School of Environmental Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China;

    Beihai Ecology and Environment Agency Beihai Guangxi 536000 China;

    Beihai Ecology and Environment Agency Beihai Guangxi 536000 China;

    School of Environmental Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China;

    School of Environmental Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China;

    School of Environmental Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China;

    Environmental Protection Research Institute of Guangxi Nanning Guangxi 530022 China;

    School of Environmental Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China;

    School of Environmental Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China;

    School of Environmental Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China;

    School of Environmental Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Volatile organic compounds; Emission inventory; Source apportionment; VOCs reactivity;

    机译：挥发性有机化合物;排放库存;来源分配;VOCS反应性;

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