SYNTHESIS AND EFFICIENCY OF A POLYACRYLACYLISOTHIOUREA CHELATING FIBER FOR THE PRECONCENTRATION AND SEPARATION OF TRACE AMOUNTS OF GOLD, PALLADIUM AND RUTHENIUM FROM SOLUTION SAMPLES

A polyacrylacylisothiourea chelating fibre was synthesized using polyacrylonitrile fibre as a starting material, and the structure of the chelating fibre was determined by infrared spectrometry. The parameters influencing the efficiency of the fibre at concentrating trace amounts of Au-III, Pd-IV, and Rum, including acidity, Bow rate, adsorption capacity, effect of re-use, interfering ions, and desorption, were investigated. Gold(I1I), Pd-IV, and Ru-III were enriched and separated from real samples and were detected using inductively coupled plasma optical emission spectrometry with satisfactory results. For concentrations of Au-III, Pd-IV, and Ru-III of 0.008 mg l(-1), the relative standard deviation was 1.8% for Au-III, 2.5% for Pd-IV, and 0.8% for Ru-III. The concentrations obtained for these ions in real solution samples by this method were basically in agreement with the given values, with average errors of less than 2.5%. The method is rapid, precise, simple, and convenient to use.