Application of Sorbent Extraction for Preconcentration/Separation of Trace Amounts of Cadmium(II), Silver(I), Gold(II) and Lead(II) from Metallic Zinc Samples and Their Determinations by Atomic Absorption Spectrometry

Abstract

The determinations of cadmium(II), silver(I), gold(II) and lead(II) in metallic zinc samples were performed using separation-preconcentration procedure on an Amberlite XAD-16 adsorption resin column. Cadmium, silver, gold and lead were quantitatively recovered and separated from a solution containing 1 M HCl and
0.3 M NaI. Effects of the matrix have been investigated. The recoveries
of interesting elements were found to be in the range of
95–103% through the use of proposed method. The procedure was
successfully applied to the determination of trace impurities in four
metallic zinc samples (recoveries > 95%, relative standard deviations
< 10).