Modeling Novel Aqueous Particle and Cloud Chemistry Processes of Biomass Burning Phenols and Their Potential to Form Secondary Organic Aerosols DOI
Jie Zhang, Manish Shrivastava, Lan Ma

et al.

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(8), P. 3776 - 3786

Published: Feb. 12, 2024

Phenols emitted from biomass burning contribute significantly to secondary organic aerosol (SOA) formation through the partitioning of semivolatile products formed gas-phase chemistry and multiphase in liquid water clouds. The aqueous-phase SOA (aqSOA) via hydroxyl radical (•OH), singlet molecular oxygen (1O2*), triplet excited states compounds (3C*), which oxidize dissolved phenols aqueous phase, might play a significant role evolution (OA). However, quantitative predictive understanding aqSOA has been challenging. Here, we develop stand-alone box model investigate •OH by dissolution followed their reactions with •OH, 1O2*, 3C* cloud droplets water. We four phenolic compounds, i.e., phenol, guaiacol, syringol, guaiacyl acetone (GA), represent some key potential sources For same initial precursor gas that dissolves aerosol/cloud subsequently reacts phase oxidants, predict (defined as per unit concentration) these is higher than isoprene-epoxydiol (IEPOX), well-known precursor. Cloud can dissolve broader range soluble compared aerosols, since contents aerosols are orders magnitude smaller droplets. Our simulations suggest highly reactive multifunctional like GA would predominantly undergo within layers, while likely be more important for less phenols. But absence clouds, condensation low-volatility oxidation reversible dominates formation, increases relative humidity (RH), approaching 40% sum at 95% RH GA. developments biomass-burning readily implemented regional global atmospheric models gases atmosphere.

Language: Английский

Persistent Influence of Wildfire Emissions in the Western United States and Characteristics of Aged Biomass Burning Organic Aerosols under Clean Air Conditions DOI
Ryan Farley,

Noah Bernays,

Daniel A. Jaffe

et al.

Environmental Science & Technology, Journal Year: 2022, Volume and Issue: 56(6), P. 3645 - 3657

Published: March 1, 2022

Wildfire-influenced air masses under regional background conditions were characterized at the Mt. Bachelor Observatory (∼2800 m a.s.l.) in summer 2019 to provide a better understanding of aging biomass burning organic aerosols (BBOAs) and their impacts on remote troposphere western United States. Submicron aerosol (PM1) concentrations low (average ± 1σ = 2.2 1.9 μg sm–3), but oxidized BBOAs O/C 0.84) constantly detected throughout study. The BBOA correlated well with black carbon, furfural, acetonitrile comprised above 50% PM1 during plume events when peak concentration reached 18.0 sm–3. Wildfire plumes estimated transport times varying from ∼10 h >10 days identified. showed ΔOA/ΔCO values ranging 0.038 0.122 ppb ppb–1 significant negative relation age, indicating loss relative CO long-range transport. Additionally, increases average sizes seen more aged plumes. mass-based size mode was approximately 700 nm (Dva) most that likely originated Siberia, suggesting aqueous-phase processing This work highlights widespread wildfire emissions have properties, thus climate,

Language: Английский

Citations

42
Aqueous ·OH Oxidation of Highly Substituted Phenols as a Source of Secondary Organic Aerosol DOI

Stephanie Arciva,

Christopher Niedek,

Camille Mavis

et al.

Environmental Science & Technology, Journal Year: 2022, Volume and Issue: 56(14), P. 9959 - 9967

Published: July 1, 2022

Biomass burning (BB) releases large quantities of phenols (ArOH), which can partition into cloud/fog drops and aerosol liquid water (ALW), react, form aqueous secondary organic (aqSOA). While simple are too volatile to significantly particle water, highly substituted ArOH more strongly might be important sources aqSOA in ALW. To investigate this, we measured the ·OH oxidation kinetics yields for six from BB. Second-order rate constants high, range (1.9-14) × 109 M-1 s-1 at pH 2 (14-25) 5 6. Mass also with an average (±1σ) value 82 (±12)%. ALW solutes have a impacts on phenol by ·OH: BB sugar some inorganic salts suppress oxidation, while nitrate salt transition metals enhance oxidation. Finally, estimated rates aqueous- gas-phase formation SOA single as function content (LWC), conditions (0.1 g-H2O m-3) (10 μg-H2O m-3). Formation is significant across LWC range, although becomes dominant under conditions. We see generally discrepancy between modeled concentrations range.

Language: Английский

Citations

40
Rapid night-time nanoparticle growth in Delhi driven by biomass-burning emissions DOI
Suneeti Mishra, S. N. Tripathi, Vijay P. Kanawade

et al.

Nature Geoscience, Journal Year: 2023, Volume and Issue: 16(3), P. 224 - 230

Published: March 1, 2023

Language: Английский

Citations

31
Air Pollution Interactions with Weather and Climate Extremes: Current Knowledge, Gaps, and Future Directions DOI
Cenlin He, Rajesh Kumar, Wenfu Tang

et al.

Current Pollution Reports, Journal Year: 2024, Volume and Issue: 10(3), P. 430 - 442

Published: Feb. 22, 2024

Language: Английский

Citations

15
Modeling Novel Aqueous Particle and Cloud Chemistry Processes of Biomass Burning Phenols and Their Potential to Form Secondary Organic Aerosols DOI
Jie Zhang, Manish Shrivastava, Lan Ma

et al.

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(8), P. 3776 - 3786

Published: Feb. 12, 2024

Phenols emitted from biomass burning contribute significantly to secondary organic aerosol (SOA) formation through the partitioning of semivolatile products formed gas-phase chemistry and multiphase in liquid water clouds. The aqueous-phase SOA (aqSOA) via hydroxyl radical (•OH), singlet molecular oxygen (1O2*), triplet excited states compounds (3C*), which oxidize dissolved phenols aqueous phase, might play a significant role evolution (OA). However, quantitative predictive understanding aqSOA has been challenging. Here, we develop stand-alone box model investigate •OH by dissolution followed their reactions with •OH, 1O2*, 3C* cloud droplets water. We four phenolic compounds, i.e., phenol, guaiacol, syringol, guaiacyl acetone (GA), represent some key potential sources For same initial precursor gas that dissolves aerosol/cloud subsequently reacts phase oxidants, predict (defined as per unit concentration) these is higher than isoprene-epoxydiol (IEPOX), well-known precursor. Cloud can dissolve broader range soluble compared aerosols, since contents aerosols are orders magnitude smaller droplets. Our simulations suggest highly reactive multifunctional like GA would predominantly undergo within layers, while likely be more important for less phenols. But absence clouds, condensation low-volatility oxidation reversible dominates formation, increases relative humidity (RH), approaching 40% sum at 95% RH GA. developments biomass-burning readily implemented regional global atmospheric models gases atmosphere.

Language: Английский

Citations

14