Influence of Soluble Surfactant Properties on the Activation of Aerosol Particles Containing Inorganic Solute

Autor:	Zhidong Li, Allen L. Williams, Mark J. Rood
Rok vydání:	1998
Předmět:	Atmospheric Science Ammonium sulfate Supersaturation Chemistry Köhler theory Aerosol symbols.namesake chemistry.chemical_compound Gibbs isotherm Chemical engineering Pulmonary surfactant Critical micelle concentration symbols Sodium dodecyl sulfate
Zdroj:	Journal of the Atmospheric Sciences. 55:1859-1866
ISSN:	1520-0469 0022-4928
Popis:	Atmospheric aerosol particles consisting of ammonium sulfate [(NH4)2SO4] or sodium chloride (NaCl) have reasonably well-defined hygroscopic properties compared to other materials in aerosol particles, such as organic material. The effect of internally mixing organic compounds with these salts is not clear when considering the hygroscopic properties of the resulting particles, including activation of particles in clouds. This research describes the activation of aerosol particles consisting of sodium dodecyl sulfate (SDS) and NaCl solute. SDS is used as a surrogate for soluble atmospheric surfactants. Kohler theory is used to model droplet activation while considering droplet properties such as surface tension (σ), surface excess surfactant concentration, and critical micelle concentration (CMC). Reduction in critical supersaturation (Sc) caused by the reduction in σ (Kelvin effect) associated with the surfactant is dominated by the increase in Sc with the decreasing number of moles of solute in t...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d24879be018c85f04d89cc69efbd251b https://doi.org/10.1175/1520-0469(1998)055<1859:iosspo>2.0.co Zobrazit plný text záznamu Plný text ve formátu PDF