Detection, Quantitative Collection and Semiquantitative Determination of Bismuth(III) and Zinc(II) in Aqueous Media Using Polyurethane Foam Treated with Dithizone

抄録

The analytical utility of dithizone foam for the detection, quantitative collection and semiquantitative determination of traces of bismuth and zinc in aqueous solutions has been examined. The effect of pH on the sensitivity and selectivity of the proposed foam tests has been investigated. The detection limits of bismuth and zinc by the foam batch method are 0.02 and 0.003ppm, respectively. The effect of diverse ions on the detection of bismuth and zinc has been critically investigated. A quantitative collection of bismuth and zinc from extremely dilute aqueous acidic solutions by the proposed foam column method has been successfully carried out.