A lead-selective extraction chromatographic resin and its application to the isolation of lead from geological samples

✍ Scribed by E. Philip Horwitz; Mark L. Dietz; Susan Rhoads; Claudia Felinto; Noel H. Gale; Judith Houghton

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 961 KB
• Volume: 292
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(94)00068-9

✦ Synopsis

A novel extraction chromatographic resin comprised of a 0.75 M solution of the macrocyclic polyether bis_4,4'(5')_[terf.

-butylcyclohexano]-l&crown-6 in isodecanol supported on an inert, polymeric substrate for the separation and preconcentration of lead from acidic media is described. The material is shown to retain lead efficiently and selectively over a wide range of nitric acid concentrations. Sorbed lead is readily recovered using any of a variety of complexing agents. The resin is demonstrated to be sufficiently stable to handle large sample volumes or to permit reuse. Application of the resin to the isolation of lead from geological samples for subsequent mass spectrometric determination of isotopic ratios is described.