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This article in JEQ

  1. Vol. 11 No. 4, p. 585-590
     
    Received: May 4, 1981
    Published: Oct, 1982


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doi:10.2134/jeq1982.00472425001100040007x

Chemical Characteristics of Wet and Dry Atmospheric Fallout in Northern California1

  1. John G. Mc Coll,
  2. Larry K. Monette and
  3. Douglas S. Bush2

Abstract

Abstract

Wet and dry atmospheric fallout were monitored on an event basis at eight locations during the wet season, November 1978–May 1979. Nine different ionic species, plus conductivity and volume, were determined. Wet fallout was commonly acid (pH < 5.6) at all sites, although there was considerable variation between sites, and temporal variation within sites. At most sites H+ was highly correlated with NO3 but not with SO42−, and NO3/SO42− equivalent ratios exceeded 1.0, indicating that HNO3 was predominant and H2SO4 secondary. Dry fallout comprises a large proportion of total atmospheric fallout.

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