A Solid Binding Matrix/Mimic Receptor-Based Sensor System for Trace Level Determination of Iron Using Potential Measurements
Author(s) -
Ayman H. Kamel,
Felismina T.C. Moreira,
Tamara Indrusiak,
M. Goreti F. Sales
Publication year - 2011
Publication title -
international journal of electrochemistry
Language(s) - English
Resource type - Journals
eISSN - 2090-3537
pISSN - 2090-3529
DOI - 10.4061/2011/643683
Subject(s) - ethylene glycol dimethacrylate , detection limit , potentiometric titration , plasticizer , chemistry , benzoyl peroxide , monomer , phthalate , polyvinyl chloride , polymer chemistry , ethylene glycol , matrix (chemical analysis) , vinyl chloride , ether , molecularly imprinted polymer , polymer , chromatography , selectivity , ion , copolymer , organic chemistry , catalysis , methacrylic acid
Iron(II)-(1,10-phenanthroline) complex imprinted membrane was prepared by ionic imprinting technology. In the first step, Fe(II) established a coordination linkage with 1,10-phenanthroline and functional monomer 2-vinylpyridine (2-VP). Next, the complex was copolymerized with ethylene glycol dimethacrylate (EGDMA) as a crosslinker in the presence of benzoyl peroxide (BPO) as an initiator. Potentiometric chemical sensors were designed by dispersing the iron(II)-imprinted polymer particles in 2-nitrophenyloctyl ether (o-NPOE) plasticizer and then embedded in poly vinyl chloride (PVC) matrix. The sensors showed a Nernstian response for [Fe(phen)3]2+ with limit of detection 3.15 ng mL−1 and a Nernstian slope of 35.7 mV per decade
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