1991 Volume 7 Issue Supple Pages 129-131
A multi - dimensional high performance liquid chromatography for the determination of trace petroleum sulfonates in crude oil is presented in this paper. Two columns are used; a reversed-phase column and an anion-exchange one. Good separation of crude oil, petroleum mono-selfonate and petroleum disulfonate can be obtained within 8 minutes, with recoveries between 96-106%. The minimum detection limits are; 50ppm for mono-sulfonate and 10ppm for disulfonate.