Gas/Aerosol Distribution of Formic and Acetic Acids
Titel:
Gas/Aerosol Distribution of Formic and Acetic Acids
Auteur:
Meng, Zhaoyue Seinfeld, John H. Saxena, Pradeep
Verschenen in:
Aerosol science and technology
Paginering:
Jaargang 23 (1995) nr. 4 pagina's 561-578
Jaar:
1995
Inhoud:
Data and correlations for evaluating the gas/aerosol equilibrium of formic and acetic acids are developed. The species considered include HCOOH(g), CH3COOH(g), HCOOH(aq), CH3COOH(aq), HCOO-, CH3COO-, HCOONa(s), CH3COONa(s), HCOOK(s), (HCOO)2Ca(s), and (CH3COO)2Ca(s). Based on available thermodynamic data, we show that the gas /aerosol distribution of formic and acetic acids is strongly on the gas-phase side for typical sulfate/ nitrate / ammonium / sodium / chloride / water aerosols and that dissolved formate and acetate have negligible effect on the gas/aerosol equilibrium of the other components.