Sample preparation in the determination of metals in oil and petroleum products by ICP MS |
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| Authors: | A V Soin T A Maryutina T V Arbuzova B Ya Spivakov |
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| Institution: | 1.Vernadsky Institute of Geochemistry and Analytical Chemistry,Russian Academy of Sciences,Moscow,Russia;2.United Research and Development Centre,Moscow,Russia |
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| Abstract: | Comparative elemental analysis of the Tengiz oil and diesel fuel is performed by inductively coupled plasma mass-spectrometry
with autoclave digestion, digestion, dilution with organic solvents, and also rotating coiled columns (RCCs). The advantages and drawbacks of each of the listed sample preparation techniques for the separation of microelements are
discussed. In contrast to the other versions, the use of RCCs is shown to provide a unique opportunity to preconcentrating
microelements from oil and petroleum products into tiny volumes of aqueous solutions (10 mL of 0.5 M HNO3). The eluate prepared can be used in the subsequent analysis by ICP MS with no extra sample preparation steps. The RCC preconcentration
of elements from oil and petroleum products makes it possible to determine metals in concentrations from μg/kg to ng/kg. |
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