Sulfuric Acid-Ammonium Sulfate Aerosol: Optical Detection in the St. Louis Region

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Science  12 Apr 1974:
Vol. 184, Issue 4133, pp. 156-158
DOI: 10.1126/science.184.4133.156


Nephelometric sensing of the deliquescence of ammonium sulfate produced by the reaction of sulfuric acid or ammonium bisulfate aerosol with ammonia provides a means for detecting these substances in air. Field experiments show them to be the dominant substances in the submicrometer, light-scattering aerosol in the St. Louis region.