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January 25, 2026Atmospheric chemistry and physicsOpen Access

Source-resolved volatility and oxidation state decoupling in wintertime organic aerosols in Seoul

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Authors

HKHwajin KimJJJiwoo JeongJMJi-Hye Moon

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Overview

Field-based investigation shows volatility and oxidation state decoupling in organic aerosols, indicating new modeling considerations.

Key Points

  • The research aims to explore the relationship between oxidation state and volatility in organic aerosols during winter haze in Seoul.
  • Conducted field-based study during a winter haze period in Seoul
  • Used a thermodenuder coupled with high-resolution time-of-flight aerosol mass spectrometer
  • Applied positive matrix factorization to resolve OA sources
  • Identified six organic aerosol factors including hydrocarbon-like OA and more-oxidized OOA
  • More-oxidized OOA showed unexpectedly high volatility despite a high oxygen-to-carbon ratio
  • Nitrogen-containing OA was prevalent in cold, humid conditions, indicating a shared combustion origin with biomass burning

Cite This Study

Kim et al. (2026) studied this question.

synapsesocial.com/papers/6975b32bfeba4585c2d6ea3fhttps://doi.org/10.5194/acp-26-1145-2026
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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 Seoul2025
  2. 2Emission Characteristics of Volatile Organic Compounds and Organic Aerosol Evolution with OH Exposure in Seoul During Winter2026
  3. 3Synoptic-scale transport drives wintertime secondary organic aerosol variability and high-PM episodes in Seoul2026
  4. 4Formation of Oxidized Organic Aerosols in Winter Haze in a Megacity of Southwest China: Implication for the Importance of Biomass Burning2025
  5. 5Variation in chemical composition and volatility of oxygenated organic aerosol in different rural, urban, and mountain environments2024 · 3 citations