Record Display for the EPA National Library Catalog

RECORD NUMBER: 4 OF 7

OLS Field Name OLS Field Data
Main Title Dimethyl and Methyl Hydrogen Sulfate in the Atmosphere.
Author Durham, J. L. ; Spiller, L. L. ; Eatough, D. J. ; Hansen, L. D. ;
CORP Author Environmental Sciences Research Lab., Research Triangle Park, NC. ;Brigham Young Univ., Provo, UT.
Year Published 1984
Report Number EPA-600/D-84-115;
Stock Number PB84-190511
Additional Subjects Air pollution ; Laboratory equipment ; Chemical analysis ; Concentration(Composition) ; Diffusion ; Industrial wastes ; Transport properties ; Organic sulfates ; Sulfur dioxide ; Electric power plants ; Sulfate/dimethyl ; Sulfate/hydroxy-methyl ; Air pollution detection ; Air pollution sampling ; Ion chromatography
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB84-190511 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 16p
Abstract
A novel technique of using the sample tube penetration profile of trace reactive gases has been applied to the sampling and indirect identification of candidate species through their diffusion coefficients. Laboratory studies of trace dimethyl and methyl hydrogen sulfate flow and their deposition as sulfate to a nylon wall demonstrated that this system can be described theoretically by the modified Gormley-Kennedy equation. Atmospheric samples taken with the penetration sampler in Elkmont, Tennessee, Riverside, California, and Detroit, Michigan exhibited mass deposition spectra that correspond to those of dimethyl and methyl hydrogen sulfate. The profiles were used to estimate the apparent gaseous diffusion coefficient and ambient mass concentration. The estimated diffusion coefficients agree well with semi-empirical theoretical estimates from gas kinetic theory. The estimates of ambient mass of the trace sulfate gas equal or exceed the measurements of fine particulate sulfate; these two variables are not correlated.