Chemical Thermodynamics Pitzer approach Computer Chemical and Geochemical modeling Ozone layer depletion
Issue Date:
5-May-2020
Publisher:
Institute of Mathematics and Informatics Bulgarian Academy of Sciences, Association for the Development of the Information Society
Citation:
Proceedings of the National Conference on "Education and Research in the Information Society", Plovdiv, November, 2020, 037p-050p
Series/Report no.:
ADIS;2020
Abstract:
Sea salts aerosols are highly hygroscopic and exhibit changes as a function of
relative humidity. Solid sea salt particles take up water in the atmosphere and form aqueous
droplets. Deliquescence is a process in which a soluble solid substance sorbs water vapor from
the air to form a very stable saturated aqueous solution on the particle’s surface. The uptake
of water by hygroscopic constituents of airborne particles significantly alters particle reactivity,
radiative properties, and cloud-droplet nucleation efficiency. This process is of interest in many
areas, such as chemistry of sea-salt aerosols in the marine boundary layer and clouds
formation in coastal areas, heterogeneous chemistry of inorganic salts, corrosion of metals in
atmosphere. The main purpose of this study is to develop a Pitzer approach based
thermodynamic model for stable (laboratory) and metastable (natural) equilibrium in extended
brine system and to build theoretically “solar evaporation diagram”. We apply the resulting
model for accurate thermodynamic description of highly non-ideal atmospheric aerosol system,
and an accurate estimation of solid-liquid phase change of sea type aerosols as function of
temperature (from 0оС to 75оС) and рН at wet natural conditions.
Description:
Report published in the Proceedings of the National Conference on "Education and Research in the Information Society", Plovdiv, November, 2020