Abstract: Element sulfur has great damage to refinery equipments and storage facilities. A method was developed for the determination of element sulfur in petroleum products based on differential pulse stripping voltammerty. The effects of the deposition potential, deposition time, pulse amplitude and scanning rate on the experimental results were examined. The results demonstrate that this method is accurate and reliable, and the recovery rate is 98.0%-103.0%. Fourteen samples were analyzed by the developed method. It is proved that the method can determine the elemental sulfur in gasoline, kerosene and diesel.

Key words: stripping voltammetry, elemental sulfur, oil testing