EVALUATION THE PRECISION OF DOCTORE TEST FOR MERCAPTANS DETECTION IN PETROLEUM PRODUCTS BY SULPHIDE ION-SELECTIVE ELECTRODE

Mercaptan sulphur in petroleum products ( Motor fuel, kerosene, aviation fuel ,….etc) were detected with standard test method of British Institute of Petroleum ( IP) that marked by the number IP-30 . The detection of this method was qualitatively and the precision has not been established. In this research a précised results were tabulated for the IP-30 test method, using sulphide ion selective electrode. A comparable results of quantitative value for mercaptans of IP-30 test method now are available