UOP 357 – Trace Sulfur in Petroleum Distillates by the Nickel Reduction Method
This method is for the determination of low concentrations of sulfur, ranging from 0.1 to 200 ppm, in distillate stocks free of hydrogen sulfide. It may be applied to non-olefinic materials, such as straight run naphthas, hydrogen treated stocks, reformates and aromatic hydrocarbons. It is limited to samples containing not more than 2% olefins. Oxidized sulfur forms, such as sulfonic acids, are not determined quantitatively; therefore, this method must be applied with discretion to the analysis of stocks which have been treated with sulfuric acid.
