Department of Applied Chemical Sciences,
Jordan University of Science & technology 22110 Irbid P.O.Box 3030, JORDAN.
E-mail: barakat@just.edu.jo.
Abstract
A spectrophotometric flow injection method for the determination of molybdenum in a variety of samples based on the thiocyanate complex formation is proposed. Effects of Cu(II), acidity, reagent concentration and interfering species were investigated. The method has proved to be rapid (80 samples per hour). The RSD of this method was found to be 0.7%. The detection limit for the determination of Mo in steels was found to be 0.05 ppm and the calibration graph is linear up to 200 ppm. The results agreed with those obtained by atomic absorption spectrometry with standard addition method and with certified values of standard reference samples.