Organic Solvents-Based Offline Aerosol Mass Spectrometry (SOff-AMS) for Comprehensive Chemical Characterization of Ambient Organic Aerosol.

ABSTRACT: The chemical composition of atmospheric aerosols is frequently investigated offline via mass spectrometry techniques. The established offline aerosol mass spectrometry (Off-AMS) uses water for extracting airborne particulate filter samples, efficiently detecting water-soluble constituents of organic aerosols (OA), which are prevalent in secondary OA (SOA), oxygenated primary OA (POA), and aged POA. Consequently, sources with substantial water-insoluble fraction may be undetectable via Off-AMS or be subject to increased uncertainties due to the absence of useful markers (e.g., polycyclic aromatic and aliphatic hydrocarbons). This potentially compromises the investigation of primary and less-aged OA from diverse anthropogenic sources (e.g., traffic, coal combustion, waste burning, tire wear,

SUBMITTER: Khare P 

PROVIDER: S-EPMC12409874 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature