Journal of Radioanalytical Chemistry

, Volume 57, Issue 2, pp 507–523 | Cite as

Improved digital filtering for automated spectral deconvolution in energy dispersive X-ray fluorescence analysis

  • W. Wegscheider
  • K. Müller
Physical Methods Section

Abstract

For the quantitation of overlapping peaks in energy dispersive X-ray fluorescence analysis, a computer program has been developped. It is based on a linear least-squares deconvolution of digitally filtered spectra. The performance of five different filters was studied on simulated spectra with respect to systematic and random errors. It is concluded that a symmetric, zero-weighted filter consisting of a Gauss-shape central lobe and a negative constant involving an energy range of 280 eV gives optimal results. The random error introduced by the filtering procedure is very moderate, so that the total error is only slightly above the value predicted from theory. A series of difficult analytical situations (S/Mo; S/Pb; Ti/V/Ba) are treated satisfactorily. Explantations for problems experienced in the literature are suggested.

Keywords

Background Component Library Spectrum Library Standard Negative Constant Incomplete Charge Collection 

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Copyright information

© Akadémiai Kiadó 1980

Authors and Affiliations

  • W. Wegscheider
    • 1
  • K. Müller
    • 1
  1. 1.Institute for Analytical Chemistry, Micro-and RadiochemistryTechnical UniversityGrazAustria

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