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Determination of sulfur, nickel and vanadium in fuel and residual oils by x-ray fluorescence spectrometry

Denoyer, Eric R. ; Siegel, Lester A.

Analytica chimica acta, 1987, Vol.192 (2), p.361-366 [Periódico revisado por pares]

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Título:
Determination of sulfur, nickel and vanadium in fuel and residual oils by x-ray fluorescence spectrometry
Autor: Denoyer, Eric R. ; Siegel, Lester A.
Assuntos: Applied sciences ; Constitution and properties of crude oils, shale oils, natural gas and bitumens. Analysis and characteristics ; Crude oil, natural gas and petroleum products ; Energy ; Exact sciences and technology ; Fuels
É parte de: Analytica chimica acta, 1987, Vol.192 (2), p.361-366
Descrição: The determination of sulfur, nickel and vanadium in fuel and residual oils by wavelength-dispersive x-ray fluorescence spectrometry is reported. Calibration is initially established with matrix-matched synthetic standards, and maintained free of instrumental drift by daily normalization to a reference standard. An epoxy-cast reference standard pellet offers mechanical rigidity and chemical stability for at least nine months. Matrix effects of sulfur and carbon are studied and corrected. Results for NBS SRM oils fall within the NBS certified values, with imprecision (% RSD) for S, Ni, and V of 1.1, 1.5 and 1.0%, respectively. Detection limits (3 s.d.) are 20 μg g −1 for sulfur and 0.8 μg g −1 for Ni and for V.
Editor: Amsterdam: Elsevier B.V
Idioma: Inglês

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