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<p>In this paper, a comprehensive study of raw and auxiliary materials, coating process exhausts, combined with the ozone formation potential (OFP) was carried out with the representative automobile manufacturing enterprises in Beijing as the study object. The results showed that the actual consumption of low-VOCs products exceeded that of high-VOCs products, except for the medium paint. Most of the varnishes and cleaners still use solvent-based materials with high volatile organic compounds (VOCs) content. The VOCs components in raw and auxiliary materials were mainly ethers, esters, alkanes, benzenes and alcohols, mainly including 1,2-propanediol diacetate, 1-butoxy-2-propanol, 2-ethylhexanol, p-xylene, dimethoxymethane, ethylene glycol monobutyl ether, ethylene glycol hexyl ether and so on. The VOCs components in the exhaust gas components were mainly alkanes and benzenes, mainly including n-hexane, decane, undecane, m-(p)-xylene, 1,2,4-trimethylbenzene, 1,3,5-trimethylbenzene, and o-ethyltoluene. The substances with the largest contribution rate of OFP were the aromatic hydrocarbons (76.95 ± 5.78%), mainly 1,3,5-trimethylbenzene (9.56 ± 3.42%), and m-(p)-xylene (24.57 ± 11.22%), 1,2,4-Trimethylbenzene (20.96 ± 5.76%).</p> Graphical Abstract <p></p>

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Characteristics of VOCs emissions and environmental impact assessment of typical automobile manufacturing enterprises in Beijing, China

  • 期刊论文

  • 发表日期：

    2026年2月11日

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  • Yinquan Qiu,
  • Xinyu Zhang,
  • Rong Sun,
  • Houjian Yang,
  • Ming Liu,
  • Lianhai Ren,
  • Pan Wang

摘要

In this paper, a comprehensive study of raw and auxiliary materials, coating process exhausts, combined with the ozone formation potential (OFP) was carried out with the representative automobile manufacturing enterprises in Beijing as the study object. The results showed that the actual consumption of low-VOCs products exceeded that of high-VOCs products, except for the medium paint. Most of the varnishes and cleaners still use solvent-based materials with high volatile organic compounds (VOCs) content. The VOCs components in raw and auxiliary materials were mainly ethers, esters, alkanes, benzenes and alcohols, mainly including 1,2-propanediol diacetate, 1-butoxy-2-propanol, 2-ethylhexanol, p-xylene, dimethoxymethane, ethylene glycol monobutyl ether, ethylene glycol hexyl ether and so on. The VOCs components in the exhaust gas components were mainly alkanes and benzenes, mainly including n-hexane, decane, undecane, m-(p)-xylene, 1,2,4-trimethylbenzene, 1,3,5-trimethylbenzene, and o-ethyltoluene. The substances with the largest contribution rate of OFP were the aromatic hydrocarbons (76.95 ± 5.78%), mainly 1,3,5-trimethylbenzene (9.56 ± 3.42%), and m-(p)-xylene (24.57 ± 11.22%), 1,2,4-Trimethylbenzene (20.96 ± 5.76%).

Graphical Abstract