title: Analytical application of organic reagents in hydrophobic gel media-I General principle and the use of dithizone gel.
abstract: Two types of hydrophobic gel particles containing dithizone were prepared, either by the swelling of low cross-linkage polystyrene beads with a dithizone solution in chlorobenzene, or by the gelatinization of a dithizone solution with dibenzalsorbitol. The extraction capacity of the gel particles for metal ions such as mercury, cadmium, zinc and lead from dilute aqueous solution, was investigated at various dithizone concentration and pH values. A column packed with such gel particles is found to be useful for the selective preconcentration or the selective trapping of specific metal ions at low concentration levels.
authors.affiliation: Department of Organic Synthesis, Faculty of Engineering, Kyushu University, Fukuoka 812, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Sekizuka
authors.forename: T
authors.initials: T
authors.lastname: Kojima
authors.forename: T
authors.initials: T
authors.lastname: Yano
authors.forename: K
authors.initials: K
authors.lastname: Ueno