Abstract
A comprehensive approach to the determination of the elemental composition of oils (including those with a viscosity of 5000 mm2/s) is proposed. It ensures the determination of the most elements present in oils using two versions of sample preparation, autoclave decomposition of oil samples and extraction preconcentration of elements from oil into an aqueous solution on rotating coiled columns (RCCs). The application of RCCs in the elemental analysis of oil ensures the preconcentration of a number of trace elements from oil (including rare-earth elements) and the determination of their concentrations at a level of ng/kg. The preconcentration factor of trace elements from oil using an RCC depends on the volume of oil sample pumped through a constant volume of the stationary phase (acid solution) retained in the column and on the speciation of elements in the oil.
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Original Russian Text © T.A. Maryutina, E.Yu. Savonina, O.N. Katasonova, 2016, published in Zhurnal Analiticheskoi Khimii, 2016, Vol. 71, No. 11, pp. 1183–1187.
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Maryutina, T.A., Savonina, E.Y. & Katasonova, O.N. A combined method of sample preparation for the determination of the total element composition of oils. J Anal Chem 71, 1126–1130 (2016). https://doi.org/10.1134/S1061934816110101
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DOI: https://doi.org/10.1134/S1061934816110101