The Open Spectroscopy Journal

2009, 3 : 31-42
Published online 2009 March 18. DOI: 10.2174/1874383800903010031
Publisher ID: TOSPECJ-3-31

The Quest for a Fundamental Algorithm in X-Ray Fluorescence Analysis and Calibration

R.M. Rousseau
Geological Survey of Canada, 601 Booth St., Room 707, Ottawa, Ontario, K1A 0E8, Canada.

ABSTRACT

The Fundamental Algorithm between concentration (Ci) and intensity (Ri) in X-ray fluorescence analysis is deduced from Sherman's equation without any approximation. Its explicit expression is thus theoretically exact and it corrects completely for all matrix effects on the intensity Ri emitted by the analyte i in a given specimen. This powerful algorithm combines the practical flexibility of the influence coefficient concept and the theoretical exactness of the Fundamental- Parameters method. In association with its innovative calibration procedure, the Fundamental Algorithm can be applied to the analysis of any sample type and offers maximum accuracy, limited only by the quality of sample preparation and the standards used.