Energy dispersive x-ray fluorescence spectrometric determination of trace elements in oil samples

Journal Article · Thu Jun 01 04:00:00 EDT 1978 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac50029a020· OSTI ID:6645161

Kubo, H ^[1]; Bernthal, R; Wildeman, T R

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1. Univ. of Colorado, Boulder

A method is described for the determination of trace elements in petroleum by energy dispersive x-ray fluorescence spectrometry. Minimum sample preparation is required. This is achieved by making small targets and spiking the sample with a solution of Cr and Rh in H/sub 2/SO/sub 4/ or organo-Rh in mineral oil. Use of two spiking elements with different x-ray energies facilitates the determination of x-ray absorption corrections. In the NBS fuel oil (SRM 1634), V, Fe, Ni, and Mo were detected and the results of the analyses correspond well with the NBS certified values. In the shale oil, Fe, Ni, Zn, As, and Se were detected. The one-element spiking method works well for samples of low viscosity where the sample can be spread on the supporting foil thin enough so that the absorption of measured x-rays can be ignored, whereas the two-element spike is needed for high viscosity samples (NBS fuel oil) where samples cannot be made thin enough to ignore sample absorption.

• OSTI ID: 6645161
• Journal Information: Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 50:7; ISSN ANCHA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
023000* -- Petroleum-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400103 -- Radiometric & Radiochemical Procedures-- (-1987)
ARSENIC
CHEMICAL ANALYSIS
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
IRON
METALS
MINERAL OILS
NICKEL
NONDESTRUCTIVE ANALYSIS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
SELENIUM
SEMIMETALS
SHALE OIL
SYNTHETIC FUELS
SYNTHETIC PETROLEUM
TRANSITION ELEMENTS
VANADIUM
X-RAY EMISSION ANALYSIS
X-RAY FLUORESCENCE ANALYSIS
ZINC