Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Analysis System for Total Sulfuric Acid in Ambient Air. Development and Preliminary Evaluation.
Author Barden., James D. ;
CORP Author Versar, Inc., Springfield, VA.;Environmental Sciences Research Lab., Research Triangle Park, NC. Atmospheric Chemistry and Physics Div.
Year Published 1981
Report Number EPA-68-02-2465; EPA-600/2-81-013;
Stock Number PB81-159139
Additional Subjects Sulfuric acid ; Gas analysis ; Chemical analysis ; Air pollution ; Sampling ; Laboratory equipment ; Air pollution detection
Library Call Number Additional Info Location Last
NTIS  PB81-159139 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 69p
A total sulfuric acid analysis (TSAA) system was developed and shown to provide quantitative determinations of sulfuric acid in air at concentrations as low as 0.26 micrograms/cu m. Quantitation at lower concentrations appears to be possible. The general approach in the design and development effort emphasized sample conditioning, rather than detector selectivity, to provide unambiguous detection. Separation of the acid from other sample components was accomplished by stagewise condensation and revaporization; therefore, particulate filters were not required. Effects of major potential interferences (SO2, NH3, and ammonium sulfates) apparently were eliminated by the addition of a small amount of hydrogen chloride to the sample.