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<p>The petrochemical industry is a cornerstone of Taiwan’s economy, yet its potential impacts on surrounding communities have drawn sustained public scrutiny. To characterize hazardous air pollutants (HAPs) in the ambient atmosphere around the Linyuan Petrochemical Industrial Park, we deployed nine monitoring stations in the surrounding area. Using a combination of continuous automatic instruments and manual sampling, we measured specific pollutant classes, including 54 species of photochemical volatile organic compounds (VOCs) precursors, 52 HAPs, aldehydes, sulfides, 7 heavy metals, dioxins, and other atmospheric contaminants. Data were processed in accordance with procedures described in the U.S. EPA National Monitoring Programs annual report, and concentration patterns from 2019 to 2024 were analyzed for six key stations adjacent to the industrial park. We further compared observed levels with international reference values to identify priority pollutants and potential health implications.</p><p><?noindent??>Annual average concentrations of heavy metals at all stations remained consistently below international reference values, suggesting that emissions from the petrochemical complex are unlikely to drive metal-related health risks for nearby residents. By contrast, annual average concentrations of benzene and formaldehyde at most stations exceeded international reference values, indicating potential health concerns associated with these hazardous VOCs. In addition, elevated concentrations of 1,2-dichloroethane, vinyl chloride, and acrylonitrile were observed at one station (Station A), warranting targeted investigation. Overall, benzene, formaldehyde, 1,2-dichloroethane, and vinyl chloride emerged as priority pollutants in the ambient environment surrounding the complex, with localized hotspots (e.g., Station A) requiring focused assessment and the implementation of site-specific mitigation measures.</p>

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Characteristics of hazardous air pollutant in the vicinity of petrochemical industrial district

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月1日

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  • Jiun-Horng Tsai,
  • Cih-Syuan Tseng,
  • I-Chen Yeh,
  • Hung-Lung Chiang

摘要

The petrochemical industry is a cornerstone of Taiwan’s economy, yet its potential impacts on surrounding communities have drawn sustained public scrutiny. To characterize hazardous air pollutants (HAPs) in the ambient atmosphere around the Linyuan Petrochemical Industrial Park, we deployed nine monitoring stations in the surrounding area. Using a combination of continuous automatic instruments and manual sampling, we measured specific pollutant classes, including 54 species of photochemical volatile organic compounds (VOCs) precursors, 52 HAPs, aldehydes, sulfides, 7 heavy metals, dioxins, and other atmospheric contaminants. Data were processed in accordance with procedures described in the U.S. EPA National Monitoring Programs annual report, and concentration patterns from 2019 to 2024 were analyzed for six key stations adjacent to the industrial park. We further compared observed levels with international reference values to identify priority pollutants and potential health implications.

Annual average concentrations of heavy metals at all stations remained consistently below international reference values, suggesting that emissions from the petrochemical complex are unlikely to drive metal-related health risks for nearby residents. By contrast, annual average concentrations of benzene and formaldehyde at most stations exceeded international reference values, indicating potential health concerns associated with these hazardous VOCs. In addition, elevated concentrations of 1,2-dichloroethane, vinyl chloride, and acrylonitrile were observed at one station (Station A), warranting targeted investigation. Overall, benzene, formaldehyde, 1,2-dichloroethane, and vinyl chloride emerged as priority pollutants in the ambient environment surrounding the complex, with localized hotspots (e.g., Station A) requiring focused assessment and the implementation of site-specific mitigation measures.