Determination of sulphur in oils by X-ray fluorescence using a thin layer solidified with wax

Abstract

A rapid method has been developed for the determination of the sulphur content in a small amount (minimum 0.5 g) of oil using an X-ray fluorescence technique. The sample is mixed and solidified with paraffin wax, which permits presentation of the sample in the normal inverted mode as a thin film and without the need of a retaining plastic window, which is usually required for liquids. Other elements may also be determined.