Chemiluminometric-CFIA for the determination of cobalt (II)‎ ion in commercial cobalt-molybdenum catalyst (K F124-3E)‎ used in desulphurization processes of petroleum products via multi gel beads reactor

الملخص EN

Co (II) ion was determined by a new, accurate, sensitive and rapid method via a continuous flow injection analysis (CFIA) with a chemiluminescence reaction based on the oxidation of Luminol which is loaded on poly acrylic acid gel beads by hydrogen peroxide in presence of Cobalt (II) ion as a chemiluminescence catalyst.

Chemical and physical parameters were investigated to obtain the best conditions.

Linear dynamic range of Cobalt (II) ion was from 0.1-20.0 μg.ml-1 with a correlation coefficient r = 0.9758, limit of detection (L.O.D) 0.2 ng / sample from the step wise dilution of lowest concentration in the calibration graph with the percentage relative standard deviation for 3 μg.ml-1 Co (ll) solution is 0.8537 % (n = 5).

The method was applied successfully for the determination of Co (II) ion in CoMo catalyst type (K F124-3E).