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Published online by Cambridge University Press: 06 March 2019
X-Ray Fluorescence (XRF) Analysis is an established analytical technique, widely used in industry and research laboratories for accurate, reproducible, and timely analysis of liquid (aqueous and non-aqueous) and solid samples. Modern X-ray spectrometers are of many types, ranging from inexpensive, simple systems for single element analysis to complex, expensive, automated systems capable of providing thousands of determinations per week. Automated data handling is now relatively commonplace, as are sample changers and matrix correction techniques. For proper application of the technique, it is still necessary to prepare the sample in a suitable manner and present it to the spectrometer so that quantitative information can be obtained. This step, sample preparation, is the most labor intensive portion of the analysis.