Oxidation of SO2 by NO2 and air in an aqueous suspension of carbon

  1. David R. Schryer
  1. Robert S. Rogowski1,
  2. David R. Schryer1,
  3. Wesley R. Cofer III1,
  4. Robert A. Edahl Jr.1 and
  5. Shekhar Munavalli2

Published Online: 21 MAR 2013

DOI: 10.1029/GM026p0174

Heterogeneous Atmospheric Chemistry

Heterogeneous Atmospheric Chemistry

How to Cite

Rogowski, R. S., Schryer, D. R., Cofer, W. R., Edahl, R. A. and Munavalli, S. (1982) Oxidation of SO2 by NO2 and air in an aqueous suspension of carbon, in Heterogeneous Atmospheric Chemistry (ed D. R. Schryer), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM026p0174

Author Information

  1. 1

    NASA Langley Research Center, Hampton, Virginia 23665

  2. 2

    Livingstone College, Salisbury, North Carolina 28144

Publication History

  1. Published Online: 21 MAR 2013
  2. Published Print: 1 JAN 1982

ISBN Information

Print ISBN: 9780875900513

Online ISBN: 9781118663813



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A series of experiments has been performed using carbon black as a surrogate for soot particles. Carbon black was suspended in water and gas mixtures were bubbled into the suspensions to observe the effect of carbon particles on the oxidation of SO2 by air and NO2. Identical gas mixtures were bubbled into a blank containing only pure water. After exposure each solution was analyzed for pH and sulfate. It was found that NO2 greatly enhances the oxidation of SO2 to sulfate in the presence of carbon black. The amount of sulfate in the blanks was significantly less. Under the conditions of our experiments no saturation of the reaction was observed and SO2 was converted to sulfate even in a highly acid medium (pH ≥ 1.5).