Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Techniques for the measurement of aerosol carbon content /
Author Macias, Edward S.,
CORP Author Washington Univ., St. Louis, MO.;Environmental Sciences Research Lab., Research Triangle Park, NC.
Publisher U.S. Environmental Protection Agency, Environmental Sciences Research Laboratory,
Year Published 1981
Report Number EPA/600/2-81/237; EPA-R-806005
Stock Number PB82-249152
Subjects Aerosols. ; Carbon. ; Air--Pollution--United States--Measurement. ; Air--Pollution--Measurement.
Additional Subjects Carbon ; Aerosols ; Chemical analysis ; Fines ; Particles ; Gamma ray spectroscopy ; Urban areas ; Air pollution ; Reflectance ; Laboratory equipment ; Air filters ; Sampling ; Air pollution detection
Library Call Number Additional Info Location Last
NTIS  PB82-249152 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation 28 pages : illustrations ; 28 cm
The report describes two different techniques for total and elemental carbon analysis developed under this grant. Both methods are totally instrumental, automated, and non-destructive. Total carbon is determined using the gamma ray analysis of light elements (GRALE) technique. This method involves the in-beam measurement of Theta rays emitted during the inelastic scattering of protons accelerated in a cyclotron. Elemental carbon is determined by a light reflectance method. Much of the analysis has been of aerosols deposited on low carbon glass and quartz filters. The extension of the method to Teflon filters is also described. An emission inventory for fine particle aerosol carbon has been constructed for the Metropolitan Los Angeles area and compared to the results of ambient sampling. The relative contribution of primary and secondary carbon to urban aerosol has also been studied in this project. The various portions of this work are published in the open literature as indicated in the text. This report is intended to serve as a guide to that literature.
Caption title. "October 1981." "EPA-600/2-81-237." Microfiche.