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Scanning macro-X-ray fluorescence analysis MA-XRF is rapidly being established as a technique for the investigation of historical paintings. The elemental distribution images acquired by this method allow for the visualization of hidden paint layers and thus provide insight into the artist's creative process and the painting's conservation history. Due to the lack of a dedicated, commercially available instrument the application of the technique was limited to a few groups that constructed their own instruments.

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The present work reviews current practices in quantitative XRD analysis of anhydrous and hydrated Portland cement. While Part 1 of this two-part work reviews the conventional internal standard method and the reference intensity ratio RIR method, Part 2 reviews the more commonly used computer-based methods, which include the Rietveld method with or without internal standard and the G-factor method with external standard. Further, some critical general aspects of the experimental procedures that affect the accuracy of the analysis are discussed.

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