SO2 OXIDATION AND H2O-H2SO4 BINARY NUCLEATION BY RADON DECAY

被引:5
作者
HE, F
HOPKE, PK
机构
[1] CLARKSON UNIV, DEPT CHEM ENGN, POTSDAM, NY 13699 USA
[2] CLARKSON UNIV, DEPT CHEM, POTSDAM, NY 13699 USA
关键词
D O I
10.1080/02786829508965324
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The oxidation of SO2 by . OH radical produced by radon decay and binary nucleation of H2SO4-H2O were studied using a thermal diffusion cloud chamber. A kinetic model was developed to examine the oxidation of SO2 by . OH to H2SO4 to estimate airborne concentration of the critical species. The kinetic modelling calculations suggested that . OH radical production is the rate control step among the gas-phase reactions proposed. The experimental results showed that nucleation rates increase with increasing radon and SO2 concentrations. Two distinct types of nucleation, mist and rain, were observed at different supersaturation in the thermal diffusion cloud chamber. The experimental observations suggest that both SO2 and H2SO4 can cause binary nucleation with water vapor. It is necessary to further distinguish between these two nucleation mechanisms in the future in order to obtain a better understanding of this combined oxidation and nucleation mechanism.
引用
收藏
页码:411 / 421
页数:11
相关论文
共 25 条
[1]  
ADACHI M, 1994, 4TH INT AER C LOS AN
[2]  
CHU KD, 1987, ACS SYM SER, V331, P365
[3]   HO(X) PRODUCTION DUE TO RADON DECAY IN AIR [J].
DING, HL ;
HOPKE, PK .
JOURNAL OF ATMOSPHERIC CHEMISTRY, 1993, 17 (04) :375-390
[4]  
Finlayson-Pitts B.J., 1986, ATMOSPHERIC CHEM
[5]   EXPERIMENTAL-STUDY OF ION-INDUCED NUCLEATION BY RADON DECAY [J].
HE, F ;
HOPKE, PK .
JOURNAL OF CHEMICAL PHYSICS, 1993, 99 (12) :9972-9978
[6]  
HE F, 1994, THESIS CLARKSON U PO
[7]  
Hirschfelder JO, 1954, MOL THEORY GASES LIQ
[8]  
Hoffmann MR, 1984, SO2 NO NO2 OXIDATION, P101
[9]   PRODUCTION OF ULTRAFINE PARTICLES BY RADON RADIOLYSIS [J].
HOPKE, PK ;
RAMAMURTHI, M .
JOURNAL OF AEROSOL SCIENCE, 1988, 19 (07) :1323-1325
[10]  
HOPKE PK, 1987, 1987 ANN M AM ASS AE