Molecular insights into the composition, sources, and aging of atmospheric brown carbon

Chemical Society Reviews, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

The light-absorbing chemical components of atmospheric organic aerosols are commonly referred to as Brown Carbon (BrC), reflecting the characteristic yellowish brown appearance aerosol.

Язык: Английский

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Inversion of the global carbonaceous aerosol components (CACs) based on ground-based remote sensing of AERONET

Environment International, Год журнала: 2025, Номер unknown, С. 109432 - 109432

Опубликована: Апрель 1, 2025

Язык: Английский

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Profiling aerosol Polycyclic Aromatic Compounds (PACs) in a severely polluted European city: A comprehensive assessment of the residential biomass burning impact on atmospheric toxicity

Journal of Hazardous Materials, Год журнала: 2025, Номер 494, С. 138431 - 138431

Опубликована: Апрель 28, 2025

Fine aerosol Polycyclic Aromatic Hydrocarbons (PAHs), Oxygenated (OPAHs) and other PM2.5 components were quantified in Ioannina, a Southeastern European city facing severe air quality degradation due to residential biomass burning (BB). Compound (PAC) seasonal means extremely enhanced winter compared summer (by 98 88 times for PAHs OPAHs, respectively). Benzo(a)pyrene (BaP) registered 347-fold increase, its estimated annual mean was 2.4 higher than the EU standard. Medium- high-molecular weight PAC species correlated well with DTTv activity (R2: 0.48 0.54, respectively), suggesting also their significant non-carcinogenic potential. These groups strongly associated methanol- water-soluble Brown Carbon absorption (R2 > 0.7). Source apportionment by Positive Matrix Factorization (PMF) on speciation dataset indicated BB as major source, contributing 80 % average Σ-PAC concentrations carcinogenic potential during study period. The risk assessment highlighted importance of considering inclusion not only legacy but emerging very high toxicity, such Benzo(c)fluorene Dibenzo-pyrenes. Observed alarming, posing substantial short- especially long-term risks. Therefore, there is an urgent need regulate Ioannina similar urban environments SE Europe.

Язык: Английский

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Molecular Characterization of Atmospheric Organic Aerosols: Contemporary Applications of High-resolution Mass Spectrometry

TrAC Trends in Analytical Chemistry, Год журнала: 2024, Номер 181, С. 117986 - 117986

Опубликована: Сен. 25, 2024

Язык: Английский

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