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Published November 12, 1982 | public
Journal Article

Chemical Composition of Acid Fog

Abstract

Fog water collected at three sites in Los Angeles and Bakersfield, California, was found to have higher acidity and higher concentrations of sulfate, nitrate, and ammonium than previously observed in atmospheric water droplets. The pH of the fog water was in the range of 2.2 to 4.0. The dominant processes controlling the fog water chemistry appear to be the condensation and evaporation of water vapor on preexisting aerosol and the scavenging of gas-phase nitric acid.

Additional Information

© 1982 American Association for the Advancement of Science. Received 15 March 1982; revised 10 May 1982. Financial support was provided by the California Air Resources Board (grant AO-141-132), and logistical support was provided by the South Coast Air Quality Management District. We thank G. Cass, D. Lawson, and J. H. Seinfeld for assistance.

Additional details

Created:
August 19, 2023
Modified:
October 19, 2023