Record Display for the EPA National Library Catalog


Main Title Proton Induced Gamma-Ray Analysis of Atmospheric Aerosols for Carbon, Nitrogen, and Sulfur Composition.
Author Macias, Edward S. ; Radcliffe, C. David ; Lewis, Charles W. ; Sawicki, Carole R. ;
CORP Author Environmental Sciences Research Lab., Research Triangle Park, NC.
Year Published 1978
Report Number EPA/600/J-78/158;
Stock Number PB80-128358
Additional Subjects Gas analysis ; Gamma ray spectroscopy ; Carbon ; Nitrogen ; Sulfur ; Samples ; Aerosols ; Chemical analysis ; Inelastic scattering ; Reprints ; Air pollution detection
Library Call Number Additional Info Location Last
NTIS  PB80-128358 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 7p
A technique for the simultaneous quantitative analysis of carbon, nitrogen, and sulfur using in-beam gamma-ray spectrometry has been developed for use with atmospheric aerosol samples. Samples are collected on quartz filters, and the aerosol composition is determined by analyzing the gamma-rays emitted following the inelastic scattering of 7.3-MeV protons. Samples are nondestructively irradiated for 1000 s in a helium atmosphere, are not subjected to reduced pressures, and can be used for subsequent analysis. Detection limits for atmospheric sampls are in the microgram per sq cm range with a precision of 5%. The technique is compared with several more conventional methods of analysis. (Copyright (c) 1978 by the American Chemical Society.)