Intercalation of some aromatic compounds on zirconium phosphate-phosphite

✍ Scribed by A.O. Rajeh; L. Szirtes

• Publisher: Elsevier Science
• Year: 1992
• Weight: 78 KB
• Volume: 17
• Category: Article
• ISSN: 0923-1137
• DOI: 10.1016/0923-1137(92)90626-d

✦ Synopsis

In a recent paper we have demonstrated that chelating ion-exchange resins can be prepared in a short time with commercial adsorbent resin (XAD-2) and a water insoluble complexing agent (TAN or PAN). These resins have been applied to preconcentrate transition metals before their determination. In order to reduce the manipulation and the possibility of contamination of samples an on-line manifold, coupled with a plasma emission spectrometer (ICP-AES) has been used. The optimized apparatus and the resin have allowed the preconcentration of six metal ions, namely Cd(II), Cu(II), Fe(III), Mn(II), Ni(II) and Zn(II) from river water and Antarctic seawater. Preconcentration efficiencies were in the range 92-105% with a preconcentration factor up to 400 for the determination of Cd in Antarctic seawater. The analytical blanks have been kept strictly under control and have always been a small part ( < 20%) of the analyte signal in the sample for 13-300 ng/l concentrations.