Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9700895 | Sensors and Actuators B: Chemical | 2005 | 5 Pages |
Abstract
Manganese(II) complex of 14,16-dimethyl-1,4,7,10,13-pentaazacyclohexadeca-13,16-diene [Me2(16)dieneN5] (I) was synthesized and used in the fabrication of Mn2+-selective ISE membrane in PVC matrix. The membrane having Mn(II) macrocyclic complex as electroactive material along with sodium tetraphenylborate (NaTPB) as anion discriminator and dioctylphthalate (DOP) as plasticizer in poly(vinylchloride) (PVC) matrix was prepared for the determination of Mn2+. The best performance was observed by the membrane having Mn(II) complex-PVC-NaTPB-DOP in the ratio 1:5:1:3. The sensor worked well over a concentration range of 1.25Â ÃÂ 10â5 to 1.0Â ÃÂ 10â1Â M between pH 3.0 and 8.0 and had a fast response time of 20Â s with a lifetime of 4 months. Their performance in partially non-aqueous medium was found satisfactory up to 30% (v/v) alcoholic content. Electrodes exhibited excellent selectivity for Mn2+ ion over other mono-, di-, trivalent cations. It can also be used as indicator electrode in the potentiometric titration of Mn2+ against EDTA.
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Authors
Ashok Kumar Singh, Puja Saxena, Amit Panwar,