Evaluation of laboratory powder X-ray micro-diffraction for applications in the fields of cultural heritage and forensic science

Analytical and Bioanalytical Chemistry
Silvie SvarcováJanka Hradilová

Abstract

The uniqueness and limited amounts of forensic samples and samples from objects of cultural heritage together with the complexity of their composition requires the application of a wide range of micro-analytical methods, which are non-destructive to the samples, because these must be preserved for potential late revision. Laboratory powder X-ray micro-diffraction (micro-XRD) is a very effective non-destructive technique for direct phase analysis of samples smaller than 1 mm containing crystal constituents. It compliments optical and electron microscopy with elemental micro-analysis, especially in cases of complicated mixtures containing phases with similar chemical composition. However, modification of X-ray diffraction to the micro-scale together with its application for very heterogeneous real samples leads to deviations from the standard procedure. Knowledge of both the limits and the phenomena which can arise during the analysis is crucial for the meaningful and proper application of the method. We evaluated basic limits of micro-XRD equipped with a mono-capillary with an exit diameter of 0.1 mm, for example the size of irradiated area, appropriate grain size, and detection limits allowing identification of given phases. We...Continue Reading

References

Jul 24, 1998·Carbohydrate Research·T AreeH Hoier
May 7, 2003·Analytical and Bioanalytical Chemistry·Tomás GrygarSnejana Bakardjieva
Oct 13, 2006·Analytical and Bioanalytical Chemistry·Manfred SchreinerKatharina Uhlir
Feb 24, 2007·Chemical Reviews·Peter VandenabeeleLuc Moens
Oct 31, 2008·Talanta·Ivan M KempsonJohn Coumbaros
Oct 9, 2009·Analytical and Bioanalytical Chemistry·Silvie SvarcováPetr Bezdicka

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Citations

Jun 4, 2014·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Silvie SvarcováDavid Hradil
Apr 2, 2015·Critical Reviews in Analytical Chemistry·Andrei A BunaciuHassan Y Aboul-Enein
Oct 21, 2020·Analytical and Bioanalytical Chemistry·Silvia GarrappaSilvie Švarcová
Dec 15, 2020·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Xinlong HeJinming Xia

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