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A new method for quantitative X‐ray analysis of multiphase mixtures
Author(s) -
Wölfel E. R.
Publication year - 1981
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889881009400
Subject(s) - diffractometer , monochromatic color , basis (linear algebra) , powder diffractometer , consistency (knowledge bases) , matrix (chemical analysis) , absorption (acoustics) , x ray , radiation , materials science , optics , analytical chemistry (journal) , computational physics , physics , chemistry , mathematics , diffraction , chromatography , geometry , scanning electron microscope , composite material
This new method for quantitative X‐ray analysis of multiphase mixtures is based on transmission measurements of thin samples in combination with absorption measurements from defined circular parts of these samples. The method has the advantage that only a few (1–5) mg of substance are required. There is no limitation on the number of phases because no matrix problems exist. The automated method is safe in operation since the measured intensities ( E d ) and absorption factors ( S ) can be checked for consistency. The measurements are made with monochromatic Cu K α (or Co K α) radiation on the STOE/CSS automatic focusing X‐ray powder diffractometer. The optical principle of the diffractometer and the theoretical basis of the method are described. The practical use of the method and two examples of analyses are given.