||Proton Induced Gamma-Ray Analysis of Atmospheric Aerosols for Carbon, Nitrogen, and Sulfur Composition.
Macias, Edward S. ;
Radcliffe, C. David ;
Lewis, Charles W. ;
Sawicki, Carole R. ;
||Environmental Sciences Research Lab., Research Triangle Park, NC.
Gas analysis ;
Gamma ray spectroscopy ;
Chemical analysis ;
Inelastic scattering ;
Air pollution detection
||Some EPA libraries have a fiche copy filed under the call number shown.
||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.)
||Prepared in cooperation with Washington Univ., St. Louis, MO. Dept. of Chemistry.
||Pub. in Analytical Chemistry, v50 n8 p1120-1124 Jul 78.
||Reprint: Proton Induced Gamma-Ray Analysis of Atmospheric Aerosols for Carbon, Nitrogen, and Sulfur Composition,
|PUB Date Free Form
||7D; 68A; 99A
||Not available NTIS