Synthesis and applications of XAD-4-DAN chelate resin for the separation and determination of Se(IV)

Geoffrey Depecker (1) , Catherine Branger (1) , André Margaillan (1) , Thierry Pigot (2) , Sylvie Blanc (2) , Fabien Robert-Peillard (3) , Bruno Coulomb (3) , Jean-Luc Boudenne (3)

1 MAPIEM - Laboratoire Matériaux Polymères Interfaces Environnement Marin - EA 4323
2 IPREM - Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux
3 LCP - Laboratoire Chimie Provence

Solid-phase extraction for cationic elements is a promising approach for water treatment or for analysis applications. However, supports that allow the selective extraction and/or preconcentration of metalloid species are still not widespread. A new chelating sorbent has been prepared by grafting 2,3-diaminonaphtalene (DAN) on Amberlite® XAD-4 resin beads via a diazo bridge. The synthesis was first carried out at a molecular level to optimise experimental conditions and to facilitate characterisation of solid sorbent by FTIR. TGA, Py-GC/MS experiments and back titration of amine functions showed that the sorbent was grafted. Se(IV) was retained by grafted Amberlite® XAD-4 with a rate of 88% at pH 2 and 80 °C. This paper presents a convenient way of grafting DAN on polystyrene-like resins and the first applications of these supports in solid-phase extraction of Se(IV).

Keywords: Selenite; 3-Diaminonaphtalene; 2; Poly(styrene-co-divinylbenzene) sorbents; Grafting

Domains: Chemical Sciences; Organic chemistry; Material chemistry; Polymers; Analytical chemistry

Geoffrey Depecker, Catherine Branger, André Margaillan, Thierry Pigot, Sylvie Blanc, et al.. Synthesis and applications of XAD-4-DAN chelate resin for the separation and determination of Se(IV). Reactive and Functional Polymers, 2009, 69 (12), pp.877-883. ⟨10.1016/j.reactfunctpolym.2009.09.002⟩. ⟨hal-01361809⟩