The Intrinsic Link between Optical Properties and Toxicity of Extractable Organic Matter in Combustion Particles: Mediated by Polycyclic Aromatic Compounds.

ABSTRACT: Organic compounds are important contributors to the optical properties and health effects of combustion-derived particles. However, the connection between optical properties and toxicity of combustion particles remains a matter of little concern. In this study, combustion particles were collected from 11 primary sources, including biomass burning, coal combustion, and vehicle exhaust. The extractable organic matter (EOM) in bituminous coal combustion particles shows the highest light-absorption, fluorescence properties, and toxicity among samples. Parallel factor (PARAFAC) analysis combined excitation-emission matrix (EEM) spectroscopy resolved 4 types of basic chromophore components in EOM. Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) analysis further resolved ∼

SUBMITTER: Yao C 

PROVIDER: S-EPMC12281203 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature