The Interplay of Brown Carbon (BrC) Surrogates and Copper: Implications for the Oxidative Potential of Ambient Particles DOI
Danni Wu, Haonan Wu, Yan Lyu

et al.

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 480, P. 136276 - 136276

Published: Oct. 24, 2024

Language: Английский

Molecular insights into the composition, sources, and aging of atmospheric brown carbon DOI Creative Commons
Alexander Laskin, Christopher P. West, Anusha P. S. Hettiyadura

et al.

Chemical Society Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 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.

Language: Английский

Citations

4
Redox Potential and Cytotoxicity of N-heterocyclic Aromatic SOA from Indole oxidation in the Atmosphere DOI
Chunlin Li, Dongmei Cai, Michal Pardo

et al.

Atmospheric Environment, Journal Year: 2025, Volume and Issue: unknown, P. 121049 - 121049

Published: Jan. 1, 2025

Language: Английский

Citations

1
Predictions of the Optical Properties of Brown Carbon Aerosol by Machine Learning with Typical Chromophores DOI
Ying Wang, Ru‐Jin Huang, Haobin Zhong

et al.

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(46), P. 20588 - 20597

Published: Nov. 7, 2024

The linkages between BrC optical properties and chemical composition remain inadequately understood, with quantified chromophores explaining less than 25% of ambient aerosol light absorption. This study characterized 38 typical in aerosols collected Xi'an, absorption contributions to ranging from 1.6 ± 0.3 5.8 2.6% at 365 nm. Based on these chromophores, an interpretable machine learning model the Shapley Additive Explanation (SHAP) method were employed explore relationships composition. attained high accuracy Pearson correlation coefficients (

Language: Английский

Citations

4
Nontargeted Screening Nitrogen-Containing Organic Compounds in Frost and Wet Deposition in Rural Northeast China DOI
Runqi Zhang, Dongmei Cai, Lina Wang

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 7, 2025

Nitrogen-containing organic compounds (NOCs) in frost serve as a critical pathway for atmospheric nitrogen deposition, significantly impacting the biogeochemical cycles of nitrogen. However, molecular characteristics NOCs and their deposition fluxes are scarcely studied. In this work, samples, collected rural Northeast China winter 2023, were analyzed using nontargeted ultrahigh performance liquid chromatography-orbitrap mass spectrometry (UHPLC-Orbitrap MS) to reveal content nitrogen-containing explore wet fluxes. The average number assigned formulas lager on hazy days compared nonhazy both water-soluble (WSOM) water-insoluble matter (WISOM) (3114 vs. 1934 WSOM 3042 2224 WISOM electrospray ionization (ESI−); 6921 5954 6629 5547 ESI+). Specifically, proportions CHON 35.6–49.9% (724–1517) 47–51.1% (2686–3388) ESI– ESI+ modes, respectively. Nitrophenol (C6H5NO3) methyl nitrophenol (C7H7NO4) most abundant NOCs, with (at maximum concentrations) 22.2 21.2 μg m–2·h–1, On days, reached up 1.73 times that indicating significant ambient during haze episode. This flux positively correlated PM2.5 concentration, implying important role particulates influencing NOC through frost. These findings highlight susceptibility capturing from atmosphere, potentially cycling ecosystems.

Language: Английский

Citations

0
Molecular characterization of atmospheric organic aerosols in typical megacities in China DOI Creative Commons
Miaomiao Zhang, Dongmei Cai,

Jingxin Lin

et al.

npj Climate and Atmospheric Science, Journal Year: 2024, Volume and Issue: 7(1)

Published: Oct. 1, 2024

Language: Английский

Citations

3
Molecular composition of secondary brown carbon from styrene at low-to-high oxidation degrees DOI

Shan Zhang,

Kun Li, Xiaowen Chen

et al.

Environmental Pollution, Journal Year: 2025, Volume and Issue: 368, P. 125795 - 125795

Published: Feb. 3, 2025

Language: Английский

Citations

0
The Interplay of Brown Carbon (BrC) Surrogates and Copper: Implications for the Oxidative Potential of Ambient Particles DOI
Danni Wu, Haonan Wu, Yan Lyu

et al.

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 480, P. 136276 - 136276

Published: Oct. 24, 2024

Language: Английский

Citations

2