Record Display for the EPA National Library CatalogRECORD NUMBER: 26 OF 204
|Main Title||Background concentration of sulfate in precipitation along with west coast of North America /|
|Author||Vong, Richard J.|
|CORP Author||Oregon State Univ., Corvallis. Dept. of Atmospheric Sciences.;Corvallis Environmental Research Lab., OR.|
|Publisher||U.S. Environmental Protection Agency, Environmental Research Laboratory,|
|Additional Subjects||Precipitation(Meteorology) ; Sulfates ; Air water interactions ; Concentration(Composition) ; Rainfall ; Sites ; Water pollution ; Data processing ; Marine atmospheres ; pH ; Acid rain ; Pacific Coast(North America) ; Air pollution sampling|
|Collation||24 pages ; 28 cm|
The pH is not sufficient to characterize the acidity of precipitation, but rather its acid-base components must be described. The chemistry of natural emissions sources as well as the mechanisms of precipitation formation are key factors in determining the chemistry of precipitation along the west coast of North America. With the ocean biota as a source of atmospheric aerosol sulfate, it is expected that this 'background' chemistry will be dominated by sulfate. For the purpose of the study, 'background' was defined as a remote site generally upwind of urban areas, with the additional requirement that data with evidence of contamination by anthropogenic sources be excluded. Data from long term precipitation monitoring sites along the coasts of Oregon, Washington, and British Columbia were evaluated to estimate a background sulfate concentration in precipitation. In addition to screening the data for charge balance, collection efficiency, and anthropogenic influence, the data were corrected for sulfate associated with sea salt.
"Paper presented at the Air & Waste Management Symposium on 'The Effects of Air Pollution on Western Forests' in Anaheim, CA, June 18-30, 1989." Includes bibliographical references. "EPA/600/D-89/107"--Cover. "June 8, 1989." Microfiche.