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This article in JEQ

  1. Vol. 7 No. 3, p. 352-357
     
    Received: Dec 15, 1977


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doi:10.2134/jeq1978.00472425000700030012x

Precipitation and Throughfall Chemistry in the San Francisco Bay Area1

  1. J. G. McColl and
  2. D. S. Bush2

Abstract

Abstract

At Berkeley, California, main ionic constituents of bulk precipitation during the wet season of 1974–1975 were SO42-, Cl, HCO3, Na+, and Ca2+, and mean H+ concentration was 10.7 ± 1.5 µeq/liter (pH 5.0). Although SO42- comprised 50% of the anions in bulk precipitation, H+ concentration had the highest correlation with NO3. Impacted air pollutants accumulated on tree leaves between major rainstorms. Atmospheric N and S were correlated with NO3 and SO42- in bulk precipitation and leafwash in a Eucalyptus globulus forest. Ionic composition of bulk precipitation resembled that of surface-soil solution in an adjoining, recently clear-cut area.

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