Publications by authors named "Benjamin R Ayres"
Dark chamber experiments were conducted to study the SOA formed from the oxidation of α-pinene and Δ-carene under different peroxy radical (RO) fate regimes: RO + NO, RO + RO, and RO + HO. SOA mass yields from α-pinene oxidation were <1 to ∼25% and strongly dependent on available OA mass up to ∼100 μg m. The strong yield dependence of α-pinene oxidation is driven by absorptive partitioning to OA and not by available surface area for condensation.
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- Organic nitrates play a crucial role in aerosol composition, especially in areas where natural hydrocarbons mix with human-made nitrogen oxides (NOx), like in the Southeast U.S.
- Previous models have tended to underestimate organic aerosol yields by not fully considering gas-phase organic nitrates or the rapid breakdown of particulate organic nitrates.
- A new model developed for the region showed that accounting for the rapid conversion of organic nitrates can significantly improve predictions of aerosol concentrations and their impact on air quality, indicating that reducing NOx emissions could lower organic aerosol levels.
Phosphatidylcholine (PC) is a versatile ligand for synthesizing gold nanoparticles that are soluble in either organic or aqueous media. Here we report a novel route to organic-soluble, PC-stabilized gold nanoparticles that can be re-suspended in water after removal of the organic solvent. Similarly, we show that PC-stabilized gold nanoparticles synthesized in water can be re-suspended in organic solvents after complete removal of water.
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