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Evaluation of a correction method for the particle‐size effect in x‐ray fluorescence analysis of ‘Thin’ and monolayer samples
Author(s) -
Markowicz Andrzej
Publication year - 1983
Publication title -
x‐ray spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.447
H-Index - 45
eISSN - 1097-4539
pISSN - 0049-8246
DOI - 10.1002/xrs.1300120403
Subject(s) - radiation , fluorescence , computational physics , particle (ecology) , absorption (acoustics) , x ray fluorescence , analytical chemistry (journal) , standard deviation , x ray , function (biology) , optics , materials science , physics , statistics , mathematics , chemistry , chromatography , oceanography , geology , evolutionary biology , biology
The application limits of a correction method for the particle‐size effect in x‐ray fluorescence (XRF) analysis are estimated theoretically in the presented paper. This correction method requires the use of two sources of exciting γ‐or x‐radiation of different energies. 1 The influence of the different values of the parameter t′ (which is a function of the linear absorption coefficients for primary and fluorescent radiation) and the influence of the relative standard deviation, S r (resulting from counting statistics) have been taken into account in evaluating the efficiency of the method. In addition, the criteria for the selection of the optimum energies of the exciting radiation, the proper times of measurement and the activities of the sources of primary radiation are proposed. An example of the application of the proposed criteria to the determination of iron (as Fe 3 O 4 ) is presented.