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Updated: Sep 15, 2025

Composition and Distribution Analysis of Bioaerosols Under Different Environmental Conditions
Published on: January 7, 2019
Volatile organic compounds from typical industries in North China Plain: emissions, air pollution contribution,
Jiqi Zhu1, Shoujun Xia1, Hejingying Niu1
1School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, PR China.
Abstract:
Volatile Organic Compounds (VOCs) are key precursors of ozone (O3) and secondary organic aerosols (SOA), which significantly impact air quality, human health, and climate. As China enhances VOCs emissions control, industry-specific strategies integrating emission characteristics, air pollution contribution, health risks and warming potential are urgently needed. This study measured VOCs emissions in 28 typical enterprises across 13 industries in an industrial city in Noth China Plain (NCP) through in-situ sampling to investigate the comprehensive impact of VOCs from industries. The entropy weight method is further utilized to investigate the integrated impacts and identify priorities of VOCs from industrial sectors. Results indicate that: (1) Current emission factors of industrial VOCs diverged substantially, with petrochemical (15.93 kg/t) and pharmaceutical (135 kg/t) industries being the most obvious emission sectors. (2) Chemical composition of VOCs varied across different industries, with surface coating emitting 69 % halogenated hydrocarbons, petrochemicals releasing 58 % aromatics, and pharmaceuticals discharging 53 % oxygenated VOCs (OVOCs). (3) Ozone formation potential peaked in surface coating (351.9 mg/m3, aromatics-driven) and olefin-rich organic chemical processes, while secondary organic aerosol potential was dominated by petrochemical aromatics (5,750 μg/m3). (4) Health risks are high in resin and plastic, pharmaceutical, and petroleum industries, with acrolein (HQ = 0.96) and acetaldehyde (cancer risk = 3.9 × 10-7) as priority hazards. (5) Based on detected greenhouse-effect VOCs, Freon-12/11 emissions dominated climate impacts (83 %, 467.1 tCO2-eq) in the petrochemical industry. (6) Entropy-weighted analysis prioritized petroleum for Tier-1 controls. Our results highlight the necessity of industry-specific emission factor revisions, reactivity-oriented controls, and multi-pollutant synergies in policy frameworks to address air quality, health, and climate challenges in the future.
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