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Rigaku Publishes New Method for Elemental Analysis of Residual Oil by EDXRF
Date:4/9/2013

Austin, TX (PRWEB) April 09, 2013

Applied Rigaku Technologies, Inc. is pleased to publish a new application report that details the analysis of sulfur, nickel, vanadium and iron in residual oil using the Rigaku NEX QC energy dispersive X-ray fluorescence (EDXRF) analyzer. The report includes complete information about sample preparation, method calibration and repeatability.

Residual oil is the low-grade oil that remains after the distillation and refining of crude oil. It can also be found in low concentrations naturally or in exhausted oil fields. Among its many uses are in the blending of bunker fuel and the production of adhesives and asphalt. In some regions it can be burned as a secondary fuel or can be further refined as a heating fuel.

Characterization of the nickel and vanadium content is important for several reasons. Nickel and vanadium are considered to be catalyst poisons, reducing the effectiveness of the chemical reaction. As such, they need to be removed prior to cracking, the process of breaking down complex organic molecules into simpler molecules by breaking carbon-carbon bonds in the precursors. Oil refinery cracking processes enable the production of commodities such as liquefied petroleum gas and gasoline from heavier crude oil distillation fractions.

Conceived to meet industry analytical needs, NEX QC EDXRF analyzers are designed to be ideal tools for elemental analysis of residual oil. For the new application, empirical calibrations were built using a suite of twelve commercially available residual oil calibration standards. Analysis was carried out using the NEX QC analyzer, which is shown to be a powerful and versatile system for quantifying elemental composition using the empirical approach.

The results of this study show that the Rigaku NEX QC EDXRF
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