Petroleum products - Determination of vanadium and nickel content - Wavelength-dispersive X-ray fluorescence spectrometry (ISO 14597:1997); German version EN ISO 14597:1999
The document specifies a method for the determination of the vanadium and nickel content of liquid pertroleum products. It may also be applied to semi-solid or solid petroleum products that are either liquefied by moderate heating or completely soluble in a specified organic solvent mixture.