Scholarlink

<p>Clarifying the source apportionment of volatile organic compounds (VOCs) and their correlation with photochemical losses and ozone formation is critically important. However, addressing this issue remains a significant challenge. To address this challenge, we proposed a novel photochemical ozone formation potential (PL-OFP)-oriented source apportionment method that facilitates the quantitative evaluation of VOC source contributions to ozone formation and associated health-economic burdens in the Pearl River Delta (PRD) urban agglomeration. Our findings indicate that PL-OFP values in the urban agglomeration ranged from 18.4 to 34.4 ppbv. Alkenes and aromatics were the dominant loss species because their unsaturated bonds are more susceptible to free-radical attack. Although natural gas and biomass combustion were the highest-concentration sources of VOCs, vehicle emissions had the greatest potential to form ozone. Notably, after photochemical reaction, over 70% of VOCs from biological sources were consumed, making them the dominant actual ozone contributor. Control measures should therefore prioritize these low-concentration but highly reactive VOC emissions. By quantifying health-economic burdens, it was estimated that the PRD region had 8522 O<sub>3</sub>-related mortalities annually, resulting in economic losses of $4933.4 M. Among these losses, PL-VOCs contributed $1195.6 M. This research offers critical insights for the synergistic control of VOC and ozone.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Photochemical ozone formation oriented VOC source apportionment and health economic burdens in Pearl River Delta

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年3月6日

查看全文
  • Weiqiang Deng,
  • Lu Wang,
  • Jin Huang,
  • Zhizhao Guo,
  • Jinghong Yang,
  • Jukun Xiong,
  • Hongli Liu,
  • Meicheng Wen

摘要

Clarifying the source apportionment of volatile organic compounds (VOCs) and their correlation with photochemical losses and ozone formation is critically important. However, addressing this issue remains a significant challenge. To address this challenge, we proposed a novel photochemical ozone formation potential (PL-OFP)-oriented source apportionment method that facilitates the quantitative evaluation of VOC source contributions to ozone formation and associated health-economic burdens in the Pearl River Delta (PRD) urban agglomeration. Our findings indicate that PL-OFP values in the urban agglomeration ranged from 18.4 to 34.4 ppbv. Alkenes and aromatics were the dominant loss species because their unsaturated bonds are more susceptible to free-radical attack. Although natural gas and biomass combustion were the highest-concentration sources of VOCs, vehicle emissions had the greatest potential to form ozone. Notably, after photochemical reaction, over 70% of VOCs from biological sources were consumed, making them the dominant actual ozone contributor. Control measures should therefore prioritize these low-concentration but highly reactive VOC emissions. By quantifying health-economic burdens, it was estimated that the PRD region had 8522 O3-related mortalities annually, resulting in economic losses of $4933.4 M. Among these losses, PL-VOCs contributed $1195.6 M. This research offers critical insights for the synergistic control of VOC and ozone.