Aerosol sulfur episodes in St. Louis, Missouri

James Huntzicker, R. S. Hoffman, R. A. Cary

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Aerosol sulfur and volatilizable sulfuric acid were measured for 8 days in Aug 1979 in St. Louis, MO, by using a quasi-continuous, in situ particulate sulfur monitor. Two types of episodes were observed. The first, which occurred during the afternoons of Aug 4-8, was characterized by rapid increases in aerosol sulfur, sulfuric acid, and sulfur dioxide but no corresponding increases in light scattering. These were hypothesized to result from gas-phase oxidation of SO2 in a point source plume with subsequent condensation onto preexisting particles or into new particles. The second type of episode occurred over several days and was characterized by a broad peak in both aerosol sulfur and light scattering, little or no volatilizable sulfuric acid, and essentially no relationship between the daily variations of sulfur dioxide and particulate sulfur. This episode was associated with the long-range transport of a polluted air mass.

Original languageEnglish (US)
Pages (from-to)962-967
Number of pages6
JournalEnvironmental Science and Technology
Volume18
Issue number12
StatePublished - Dec 1984

Fingerprint

Aerosols
Sulfur
sulfur
aerosol
Sulfuric acid
sulfuric acid
Sulfur Dioxide
Sulfur dioxide
light scattering
sulfur dioxide
Light scattering
long range transport
air mass
diurnal variation
point source
condensation
Condensation
plume
Gases
oxidation

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry
  • Environmental Engineering
  • Earth and Planetary Sciences(all)

Cite this

Aerosol sulfur episodes in St. Louis, Missouri. / Huntzicker, James; Hoffman, R. S.; Cary, R. A.

In: Environmental Science and Technology, Vol. 18, No. 12, 12.1984, p. 962-967.

Research output: Contribution to journalArticle

Huntzicker, J, Hoffman, RS & Cary, RA 1984, 'Aerosol sulfur episodes in St. Louis, Missouri', Environmental Science and Technology, vol. 18, no. 12, pp. 962-967.
Huntzicker, James ; Hoffman, R. S. ; Cary, R. A. / Aerosol sulfur episodes in St. Louis, Missouri. In: Environmental Science and Technology. 1984 ; Vol. 18, No. 12. pp. 962-967.
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