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April 13, 2026ACS ES&T AirOpen Access

Emission Characteristics of Volatile Organic Compounds and Organic Aerosol Evolution with OH Exposure in Seoul During Winter

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Authors

HKHwajin KimQHQihua HuHKHyungu Kang

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Overview

The study characterizes SOA formation in Seoul, showing the impact of oxidative aging on pollution levels.

Key Points

  • The research aims to characterize VOC emissions and SOA formation during winter in Seoul.
  • High-resolution, real-time measurements of VOCs and SOA were conducted.
  • Two hydrocarbon photochemical clocks were used to assess air mass aging.
  • Compositional analysis tracked the evolution of organic aerosol components.
  • A semiempirical volatility basis set model was applied to analyze SOA mass.
  • Stagnant weather conditions led to high VOC emissions dominated by BTEX compounds.
  • Short-lived aromatics were identified as key drivers for local SOA.
  • SOA was formed rapidly from less-oxidized organic aerosols, which then evolved into more-oxidized forms.
  • The model captured 50–60% of ambient SOA mass, but underperformed during peak pollution events.

Cite This Study

Kim et al. (2026) studied this question.

synapsesocial.com/papers/69dc87ea3afacbeac03e9f00https://doi.org/10.1021/acsestair.6c00119
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Source-resolved volatility and oxidation state decoupling in wintertime organic aerosols in Seoul2026
  2. 2Source-Resolved Volatility and Oxidation State Decoupling in Wintertime Organic Aerosols in Seoul2025
  3. 3Secondary Organic Aerosol Formation from Ambient Air in Summer in Urban Beijing: Contribution of S/IVOCs and Impacts of Heat Waves2024 · 27 citations
  4. 4Synoptic-scale transport drives wintertime secondary organic aerosol variability and high-PM episodes in Seoul2026
  5. 5Unified modeling of the formation and evolution of secondary organic aerosol from oxygenated aliphatic precursors over long-time oxidation2026