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<p>Chlorinated and brominated polycyclic aromatic hydrocarbons (Cl/BrPAHs) are emerging organic pollutants that pose severe risks to both the natural environment and public health. However, the limited understanding of their global emission sources and levels hinders effective control measures. Here we present a comprehensive global inventory and source attribution analysis of Cl/BrPAH emissions from 11 key industrial sectors. By integrating emission data with machine learning models, we estimate that global industrial Cl/BrPAH emissions in 2018 were 5,143 kg (94.3% ClPAHs and 5.7% BrPAHs) across 184 countries. Emission hotspots, in terms of total estimated Cl/BrPAH emissions, were concentrated in Oceania, East Asia and Latin America, collectively accounting for over 66% of the global total emissions. Iron ore sintering was identified as the largest industrial source (86.1% of total emissions). These findings can facilitate policy-making and the development of mitigation strategies for Cl/BrPAH emissions, and eventually contribute to greener industries.</p>

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Global industrial emissions of chlorinated and brominated polycyclic aromatic hydrocarbons

  • 期刊论文

  • 发表日期：

    2025年10月15日

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  • Yueyao Yang,
  • Yahui Liu,
  • Zhefu Yu,
  • Guohua Zhu,
  • Bingcheng Lin,
  • Yunfeng Ma,
  • Guorui Liu,
  • Rong Jin,
  • Minghui Zheng

摘要

Chlorinated and brominated polycyclic aromatic hydrocarbons (Cl/BrPAHs) are emerging organic pollutants that pose severe risks to both the natural environment and public health. However, the limited understanding of their global emission sources and levels hinders effective control measures. Here we present a comprehensive global inventory and source attribution analysis of Cl/BrPAH emissions from 11 key industrial sectors. By integrating emission data with machine learning models, we estimate that global industrial Cl/BrPAH emissions in 2018 were 5,143 kg (94.3% ClPAHs and 5.7% BrPAHs) across 184 countries. Emission hotspots, in terms of total estimated Cl/BrPAH emissions, were concentrated in Oceania, East Asia and Latin America, collectively accounting for over 66% of the global total emissions. Iron ore sintering was identified as the largest industrial source (86.1% of total emissions). These findings can facilitate policy-making and the development of mitigation strategies for Cl/BrPAH emissions, and eventually contribute to greener industries.