Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Acidification of Rain in the Presence of SO2, H2O2, O3, and HNO3.
Author Overton, Jr., John H. ; Durham, Jack L. ;
CORP Author Northrop Services, Inc., Research Triangle Park, NC.;Environmental Sciences Research Lab., Research Triangle Park, NC.
Year Published 1982
Report Number EPA-600/D-82-150;
Stock Number PB82-167206
Additional Subjects Air pollution ; Sulfur dioxide ; Ozone ; Hydrogen peroxide ; Carbon dioxide ; Nitric acid ; Mass transfer ; Chemical reactions ; Mathematical models ; Acid rain
Library Call Number Additional Info Location Last
NTIS  PB82-167206 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 27p
The production of acid sulfate and the accumulation of acid nitrate are calculated for falling raindrops using a physico-chemical model that accounts for the mass transfer of SO2, H2O2, O3, HNO3, and CO2. The acidification is postulated to occur through the absorption of free gaseous HNO3 and the absorption and reaction of SO2, H2O2, and O3 to yield H2SO4. Investigated are the relative effectivness of H2O2(aq) and O3(aq) for oxidizing SO2(aq) to yield H(+1) and SO-2(-2), and the role of HNO3(aq) in acidifying raindrops and influencing SO4(-2) formation. Results indicate: that H2O2 is more effective than O3, HNO3 inhibits SO4(-2) formation due to O3 oxidation, and in all cases, HNO3 is important in acidifying rain.