Poly[1-(N,N-bis-carboxymethyl)amino-3-allylglycerol-co-dimethylacrylamide] brushesgrafted onto siliceous support for preconcentration and determination of cobalt (II) in human plasma and environmental samples

• Published in: The Korean journal of chemical engineering pp. 1722 - 1728
• Main Authors: Homayon Ahmad Panahi, Mahshid Nikpour Nezhati, Rohollah Abedini Kashkoieh, Elham Moniri, Igor Yu. Galaev
• Format: Journal Article
• Language: English
• Published: 한국화학공학회 01.09.2013
• Subjects: 화학공학
• ISSN: 0256-1115; 1975-7220
• DOI: 10.1007/s11814-013-0100-1

A chelating matrix prepared by surface grafting of polymer containing a functional monomer, poly[1-(N,Nbis-carboxymethyl)amino-3-allylglycerol-co-methylacrylamide] (poly(AGE/IDA-co-DMAA) onto a modified silica. The silica surface was modified by silylation with 3-mercaptopropyltrimethoxysilane followed by graft polymerization. Monomer of allyl glycidyl ether-iminodiacetic acid was synthesized by reaction of allyl glycidyl ether with iminodiacetic acid. The chelating sorbent can be reused for 15 cycles of sorption-desorption without any significant change in sorption capacity. The profile of cobalt uptake on the sorbent reflects good accessibility of chelating sites in poly(AGE/IDA-co-DMAA)-grafted silica gel. The equilibrium adsorption data of Co(II) on modified sorbent were analyzed by Langmuir, Freundlich, Temkin and Redlich-Peterson models. The method was applied for cobalt ions determination in human plasma and sea water sample with satisfactory results. KCI Citation Count: 3