Analytical Sciences

Abstract − Analytical Sciences, 30(1), 35 (2014).

Chelating Materials Immobilizing Carboxymethylated Pentaethylenehexamine and Polyethyleneimine as Ligands
Shigehiro KAGAYA* and Yoshinori INOUE**
*Graduate School of Science and Engineering for Research, University of Toyama, Toyama 930-8555, Japan
**Research & Development Center, Nippon Filcon Co., Ltd., Inagi, Tokyo 206-8577, Japan
This article presents an overview of our recent progress on the development of chelating materials. Carboxymethylated pentaethylenehexamine (CM-PEHA) and polyethyleneimine (CM-PEI) as chelating ligands show excellent performance for the solid-phase extraction of trace elements. Chelating resins immobilizing these ligands can be readily prepared by immobilizing PEHA and PEI on methacrylate resins and then carboxymethylating them. Chelating fiber can also be prepared with a wet spinning technique using a mixture of a viscose solution and a solution containing fine particulate CM-PEHA resin or CM-PEI. The potentials of these chelating materials for the separation and preconcentration of trace elements are outlined.