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Quantitative microanalysis of cristobalite by X‐ray powder diffraction
Author(s) -
Bye E.
Publication year - 1983
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/s0021889883009899
Subject(s) - cristobalite , microanalysis , diffraction , powder diffraction , x ray crystallography , analytical chemistry (journal) , materials science , detection limit , membrane , membrane filter , chemistry , mineralogy , optics , crystallography , chromatography , metallurgy , physics , biochemistry , quartz , organic chemistry
A method for the quantitative X‐ray diffraction analysis of microgram amounts of cristobalite is presented. Dust samples (1–2 mg) distributed on Nuclepore membrane filters are placed upon a silver membrane filter in a rotating sample holder. The diffraction pattern intensities of the silver filter are used to correct for absorption and for long‐term instrumental drift. The detection limit is 10 μg with an accuracy of ± 10% at the 0.3 mg level.