Record Display for the EPA National Library Catalog


Main Title Mathematical techniques for X-ray analyzers /
Author Gardner, Robin P. ; Verghese, Kuruvilla
Other Authors
Author Title of a Work
Verghese, Kuruvilla.
Dzubay, T. G.
CORP Author North Carolina State Univ. at Raleigh. Center for Engineering Applications of Radioisotopes.;Environmental Sciences Research Lab., Research Triangle Park, NC.
Publisher Environmental Sciences Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1980
Report Number EPA/600-2-80-070; R-802759; EPA-R-802759
Stock Number PB80-192487
OCLC Number 32378047
Subjects X-ray spectroscopy--Mathematical models
Additional Subjects Gas analysis ; X ray analysis ; Particles ; Air pollution ; Chemical analysis ; X ray fluorescence ; Calibrating ; Least squares method ; Air filters ; Sampling ; Computer aided analysis ; Air pollution detection
Internet Access
Description Access URL
Local Library Info
Library Local Subject Local Note
N/A X-ray spectroscopy--Statistical analysis
Library Call Number Additional Info Location Last
EHAM  EPA-600/2-80-070 Region 1 Library/Boston,MA 05/25/2016
EJBD ARCHIVE EPA 600-2-80-070 Headquarters Library/Washington,DC 03/21/2011
EJBD  EPA 600-2-80-070 Headquarters Library/Washington,DC 12/16/2019
EJED  EPA-600/2-80-070 OCSPP Chemical Library/Washington,DC 04/28/1995
EKBD  EPA-600/2-80-070 Research Triangle Park Library/RTP, NC 07/04/2003
ESAD  EPA 600-2-80-070 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB80-192487 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation ix, 31 pages : illustrations ; 28 cm.
Mathematical techniques and subsequent computer software were developed to process energy-dispersive x-ray fluorescence spectra for elemental analysis of airborne particulate matter collected on filters. The research concerned two areas: (1) determination of characteristic x-ray intensities and (2) determination of elemental amounts from the known characteristic x-ray intensities. In the first area, efforts primarily concentrated on developing and implementating of the library, linear least-squares method and included the two common non-linear aspects of XRF pulse-height spectra: excitation source background and pulse pile up. A detector response function model was also developed for si(Li) detectors to alleviate the necessity for obtaining and storing extensive complete library spectra for every element of interest. This approach gives improved accuracy, greatly reduces the experimental effort required, and is capable of accounting for variations in detector calibration and resolution without requiring extensive additional experimental effort. In the second research area the fundamental parameters method was developed by Monte Carlo simulation. Data were collected for several shapes of particles deposited on filters. Empirical correction factors for various practical cases of interest based on these simulations are reported.
"EPA/600-2-80-070." "April 1980." "This report was submitted in fulfillment of grant no. R-802759 by North Carolina State University under the partial sponsorship of the U.S. Environmental Protection Agency." "Grant no. R-802759." Includes bibliographical references (pages 25-30).