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Nonaqueous suspensions in total reflection X-ray fluorescence analysis of solids

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Abstract

It has been suggested to use suspensions of solid samples in viscous liquids for the determination of the elemental composition by the total reflection X-ray fluorescence (TRXF) method. Two liquids—ethylene glycol and glycerol—have been studied as a dispersion phase. It turned out that the sedimentation stability of suspensions in these liquids is higher than in water. During 5 min of sedimentation, the suspended analyte concentration changes by 10–15 rel. % in nonaqueous media and by up to 50 rel. % in aqueous media. It has been determined that the repeatability of measurements in nonaqueous suspensions is 3–5 rel. % against 10–15 rel. % for aqueous suspensions. It has been demonstrated that ethylene glycol and glycerol can be efficiently used for preparing samples for the TRXF method.

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  1. Moscow State University, Moscow, 119991, Russia

    P. Yu. Sharanov, N. V. Alov & Yu. A. Zolotov

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  1. P. Yu. Sharanov
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  2. N. V. Alov
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  3. Yu. A. Zolotov
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Correspondence to N. V. Alov.

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Original Russian Text © P.Yu. Sharanov, N.V. Alov, Yu.A. Zolotov, 2016, published in Doklady Akademii Nauk, 2016, Vol. 467, No. 3, pp. 308–310.

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Sharanov, P.Y., Alov, N.V. & Zolotov, Y.A. Nonaqueous suspensions in total reflection X-ray fluorescence analysis of solids. Dokl Chem 467, 91–93 (2016). https://doi.org/10.1134/S0012500816030101

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