Gas-particle partitioning of low-molecular-weight organic acids in ...
网页2024年8月20日 · The gas phase exhibited formic acid as the most prevalent LMW organic acid (1245 ± 953 ng m −3), followed by acetic acid (899 ± 662 ng m −3), oxalic acid (22 ± 8 ng m −3), and methanesulfonic acid (14 ± 11 ng m −3) during the observation period.
网页Both the Debye-Hiickel theory and Pitzer's expression are used to calculate the electrostatic contribution to the single-ion activity coefficients. Calculations have been perform~d on aqueous sulfuric acid, acetic acid, hydrofluoric acid, cadmium chloride, copper sulfate, and sodium carbonate.
Particle size variations in different molar ratios of acetic acid ...
网页The results from this study showed that two of the novel materials comprising acetic acid-chitosan and a combination of equimolar ratios of acetic acid-TEOS-chitosan could be useful...
Experimental data for CH 3 COOH (Acetic acid) - NIST
网页Calculated geometries for CH 3 COOH (Acetic acid). Bond descriptions. Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Molecular insights into organic particulate formation
网页2019年7月26日 · Here, we use experiments and Born–Oppenheimer molecular dynamics simulations to better understand the mechanism of particle formation from gas phase mixtures of formic acid (HCOOH), (CH3)3N,...
Gas-particle partitioning of low-molecular-weight organic acids in ...
网页2024年8月20日 · Gas-to-particle partitioning is a key process controlling the lifetime of organic acids in the atmosphere, depending on ambient meteorological conditions (temperature, relative humidity), particle phase state, and their physicochemical properties (specifically, Henry's law constants, dissociation constants, and …
Gibbs ensemble Monte Carlo simulation using an optimized …
网页2016年6月21日 · Gibbs ensemble Monte Carlo simulation with configurational bias was employed to study the vapor–liquid equilibrium (VLE) for pure acetic acid and for a mixture of acetic acid and ethylene. An improved united-atom force field for acetic acid based on a Lennard-Jones functional form was proposed.
ACP - The acidity of atmospheric particles and clouds
网页Abstract. Acidity, defined as pH, is a central component of aqueous chemistry. In the atmosphere, the acidity of condensed phases (aerosol particles, cloud water, and fog droplets) governs the phase partitioning of semivolatile gases such as HNO3, NH3, HCl, and organic acids and bases as well as chemical reaction rates.
Synergistic effects of acetic acid and nitric acid in water-based sol ...
网页2021年7月31日 · Investigating the particle growth and the polydispersity by dynamic light scattering revealed synergistic effects when both acetic acid and nitric acid were present, resulting in separating the two steps of the sol–gel reaction, namely the hydrolysis and condensation steps.
Infrared spectroscopy of acetic acid and formic acid aerosols: …
网页Acetic acid aerosol particles, formic acid aerosol particles and mixed acid/ice particles were generated in a collisional cooling cell at a temperature of 78 K and investigated using in situ rapid scan Fourier transform infrared spectroscopy. The infrared spectra reveal that the internal structure of the par.
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