Pohl P, Prusisz B, Zyrnicki W
Institute of Inorganic Chemistry and Metallurgy of Rare Elements, Wroclaw University of Technology, Wybrzeze Stanislawa Wyspainskiego 27, 50-370 Wroclaw, Poland.
Talanta. 2005 Jul 15;67(1):155-61. doi: 10.1016/j.talanta.2005.02.025. Epub 2005 Mar 23.
Metalfix Chelamine chelating resins of two different bead sizes (150-300 and 40-80mum) were examined and compared regarding their application for sorption of Au, Ir, Pd, Pt, Rh and Ru ions from medium of HCl, HNO(3) and mixtures of HCl and HNO(3). The quantitative enrichment of Au, Ir, Pd and Pt was established for the resin of 150-300mum particle size and for solutions acidified with HCl and HNO(3) (3:1) up to the concentration of 0.50moll(-1). In the case of Rh and Ru, the uptake of these metals by the resin was lower than 50%. For the elution, solutions of different reagents, i.e. HCl, HNO(3), KCN, KI, KSCN and (NH(2))(2)CS, were studied with respect to the complete release of the analytes retained by the resin. In addition, influence of various base metals, i.e. Al, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb and Zn, on the retention of the noble metals was investigated. Under the selected conditions for the retention and elution of Au, Ir, Pd and Pt, the analytical performance of the proposed pre-concentration procedure was evaluated and it was applied to the determination of these noble metals in anodic sludge sample.
研究并比较了两种不同珠粒尺寸（150 - 300和40 - 80微米）的Metalfix Chelamine螯合树脂从HCl、HNO₃以及HCl和HNO₃混合物介质中吸附Au、Ir、Pd、Pt、Rh和Ru离子的应用情况。对于粒径为150 - 300微米的树脂以及用HCl和HNO₃（3:1）酸化至浓度为0.50 mol·L⁻¹的溶液，确定了Au、Ir、Pd和Pt的定量富集。对于Rh和Ru，树脂对这些金属的吸附率低于50%。对于洗脱，研究了不同试剂（即HCl、HNO₃、KCN、KI、KSCN和(NH₂)₂CS）的溶液对树脂保留的分析物的完全释放情况。此外，还研究了各种贱金属（即Al、Cd、Co、Cr、Cu、Fe、Mn、Ni、Pb和Zn）对贵金属保留的影响。在选定的Au、Ir、Pd和Pt保留及洗脱条件下，评估了所提出的预浓缩程序的分析性能，并将其应用于阳极污泥样品中这些贵金属的测定。
