Record Display for the EPA National Library Catalog

RECORD NUMBER: 7 OF 26

OLS Field Name OLS Field Data
Main Title Atmospheric Weathering Caused by Dry Deposition of Acidic Compounds.
Author Cheek, S. F. ; Edney, E. O. ; Spence, J. W. ; Haynie, F. ; Corse, E. W. ;
CORP Author NSI Technology Services Corp., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Publisher c1989
Year Published 1989
Report Number EPA-68-02-4443; EPA/600/J-89/296;
Stock Number PB90-197740
Additional Subjects Weathering ; Corrosion tests ; Acids ; Paint ; Tables(Data) ; Graphs(Charts) ; Acid rain
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB90-197740 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/15/1990
Collation 21p
Abstract
The study was conducted to investigate the effects of deposition on galvanized steel and painted panels using mobile covering/deionized spray devices at exposure sites located at Steubenville, OH and Research Triangle Park (RTP), NC. Ambient rain and deionized spray runoff samples from the panels were collected on an event basis for seven months and underwent detailed chemical analysis. The analysis indicated that the dry deposition of acid gases at the sites increased the dissolution rate of galvanized steel corrosion products. Although the average SO2 level in Steubenville was ten times the RTP value, the rate of Zn dissolution was only 1.9. This result in conjunction with the presence of large amounts of Ca in the Steubenville runoff samples suggest that neutralization of acidic gases by dry deposited basic particulates may be important at the Steubenville site. At the RTP site low levels of anions were found in the runoff from the painted panel with H(1+) as the most abundant cation. This result is consistent with the lack of reactivity towards acidic gases due to the absence of alkaline paint components. (Copyright (c) 1989 Marcel Dekker, Inc.)