Application of X-Ray Powder Diffraction for Analysis of Selected Dietary Supplements Containing Magnesium and Calcium

Frontiers in Chemistry
Izabela Jendrzejewska

Abstract

It is estimated that ~50% of medications and dietary supplements offered in the Internet are counterfeit. X-ray diffraction is one of the techniques which may be successfully applied to identify various chemical compounds in polycrystalline mixtures such as dietary supplements, but also medications, narcotics or designer drugs. X-ray diffraction enables the understanding of compositions of such mixtures. For the tests, 22 dietary supplements which should contain magnesium and calcium compounds, available in pharmacies, groceries, Internet shops, as well as in shops for sportspersons, were selected. Identification of crystalline substances present in the tested sample consists in determination of inter-planar distances d hkl of investigated substances and determination of intensity of the obtained diffraction lines, and then in comparing them with values contained in diffraction databases. In this study, the ICDD-PDF2 database was used. The most important criterion in qualitative analysis, confirming the presence of a given phase, is the conformity of positions of diffraction lines in the recorded diffraction image with those in the reference image. Reflection shifts for the individual 2θ angles compared with the data from the ...Continue Reading

References

Nov 28, 2006·Journal of Pharmaceutical and Biomedical Analysis·Jan K MaurinZbigniew Fijałek
Sep 11, 2010·Journal of Pharmaceutical and Biomedical Analysis·B J VenhuisD de Kaste
Sep 9, 2011·Journal of Pharmaceutical and Biomedical Analysis·K StypułkowskaZ Fijałek

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Citations

Dec 17, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Izabela JendrzejewskaJosef Jampilek

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X-ray
infrared spectroscopy

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Vitalsss
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Mex Muscle Excellence

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