Application of 1,2-Dimaleimidobenzene as a Neutral Ionophore in Construction of a Highly Selective Neodymium(III) Liquid Membrane Electrode

Content Provider	CiteSeerX
Author	Zamani, Hassan Ali Sahebnasagh, Sara
Abstract	A highly selective neodymium(III) ion-selective membrane electrode has been fabricated in a poly(vinyl chloride) matrix based on 1,2-dimaleimidobenzene (DMB) as an ionophore, dibutyl phthalate (DBP) as a plasticizer, oleic acid (OA) and sodium tetraphenyl borate (NaTPB) as a good lipophilic additives. The electrode exhibits a Nernstian slope of 20.7±0.3 mV decade-1 over a wide concentration range (1.0×10−6 to 1.0×10−2 mol L-1) for Nd3+ ions and a detection limit of 5.8×10−7 mol L-1 between pH 2.3 and 9.1. It has a fast response time of 5 s. The proposed membrane sensor revealed good selectivity for Nd(III) over a wide variety of other metal ions. The electrode was successfully applied as an indicator electrode for the potentiometric titration of neodymium ions with EDTA as well as for the determination of the Nd
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Subject Keyword	Liquid Membrane Electrode Neutral Ionophore Highly Selective Neodymium Mol L-1 Fast Response Time Wide Concentration Range Ion-selective Membrane Electrode Nd3 Ion Neodymium Ion Good Lipophilic Additive Sodium Tetraphenyl Borate Nernstian Slope Dibutyl Phthalate Vinyl Chloride Detection Limit Good Selectivity Selective Neodymium Oleic Acid Indicator Electrode Potentiometric Titration Wide Variety Metal Ion Mv Decade-1
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