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Energy‐dispersive x‐ray fluorescence analysis of borax beads using double dilution without comparison standards
Author(s) -
Muia L. M.,
Van Grieken R.
Publication year - 1991
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.1300200405
Subject(s) - borax , dilution , x ray fluorescence , certified reference materials , materials science , certification , fluorescence , mineralogy , analytical chemistry (journal) , chemistry , detection limit , environmental chemistry , optics , physics , chromatography , thermodynamics , raw material , organic chemistry , political science , law
Abstract A method for the energy‐dispersive x‐ray fluorescence analysis of geological materials in borax glasses without standards is described. The usefulness of the procedure was demonstrated by analysing five certified sedimentary rock reference materials for Al 2 O 3 , SiO 2 , CaO, TiO 2 , MnO and Fe 2 O 3 . The experimental results show reasonable agreement with the certified values. The method has a theoretical precision of 2% when dilution ratios of 6 and 12 are used. The actual precision of the method ranges from 4 to 15% for these element oxides. For the major oxides considered, the procedure can be useful when certified or well characterized geological standards are not available.