6533b835fe1ef96bd129f2f6

RESEARCH PRODUCT

A laboratory study on the scavenging of SO2 by snow crystals

S. BarthS.k. MitraH.r. Pruppacher

subject

ChemistryAnalytical chemistryGeneral Earth and Planetary SciencesAcid rainLaboratory experimentAtmospheric sciencesSnowcomplex mixtureshuman activitiesScavengingWater vaporrespiratory tract diseasesGeneral Environmental Science

description

Abstract A laboratory experiment is described where the uptake of SO2 by dendritic snow crystals was studied. In a first experimental series the uptake of SO2 was investigated during the growth of the snow crystals from water vapor with and without the presence of H2O2 in the air. In a second series of experiments we studied the uptake of SO2 by snow crystals which had completed their growth. The results of our experiments showed that under both conditions SO2 became scavenged by snow crystals. The uptake of SO2 was particularly pronounced during the growth of the snow crystals, and at temperatures close to 0°C where a quasi-liquid layer exists at the surface of ice. As expected, the SO2 uptake becomes enhanced in the presence of H2O2. The present results are in qualitative agreement with previous studies involving bulk ice.

yearjournalcountryeditionlanguage
1990-01-01Atmospheric Environment. Part A. General Topics
https://doi.org/10.1016/0960-1686(90)90324-g