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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/3017
Title: Schiff bases as cadmium(II) selective ionophores in polymeric membrane electrodes
Authors: Gupta V.K.
Singh A.K.
Gupta B.
Published in: Analytica Chimica Acta
Abstract: The construction and performance characteristics of polymeric membrane electrodes based on two neutral ionophores, N,N′-[bis(pyridin-2-yl)formylidene]butane-1,4-diamine (S1) and N-(2-pyridinylmethylene)-1,2-benzenediamine (S2) for quantification of cadmium ions, are described. The influences of membrane compositions on the potentiometric response of the electrodes have been found to substantially improve the performance characteristics. The best performance was obtained with the electrode having a membrane composition (w/w) of (S1) (2.15%):PVC (32.2%):o-NPOE (64.5%):KTpClPB (1.07%). The proposed electrode exhibits Nernstian response in the concentration range of 7.9 × 10-8 to 1.0 × 10-1 M Cd2+ with limit of detection 5.0 × 10-8 M, performs satisfactorily over wide pH range (2.0-8.0) with a fast response time (10 s). The sensor has been found to work satisfactorily in partially non-aqueous media up to 30% (v/v) content of methanol, ethanol and acetonitrile and could be used for a period of 2 months. The analytical usefulness of the proposed electrode has been evaluated by its application in the determination of cadmium in real samples. The practical utility of the membrane electrode has also been observed in the presence of surfactants. © 2006 Elsevier B.V. All rights reserved.
Citation: Analytica Chimica Acta (2007), 583(2): 340-348
URI: https://doi.org/10.1016/j.aca.2006.10.039
http://repository.iitr.ac.in/handle/123456789/3017
Issue Date: 2007
Keywords: Cadmium selective electrode
Poly(vinylchloride) membranes
Potentiometry and ion-selective electrodes
Schiff base
ISSN: 32670
Author Scopus IDs: 7403420647
57209223382
7402195167
Author Affiliations: Gupta, V.K., Department of Chemistry, Indian Institute of Technology-Roorkee, Roorkee, 247667, India
Singh, A.K., Department of Chemistry, Indian Institute of Technology-Roorkee, Roorkee, 247667, India
Gupta, B., Department of Chemistry, Indian Institute of Technology-Roorkee, Roorkee, 247667, India
Corresponding Author: Gupta, V.K.; Department of Chemistry, Indian Institute of Technology-Roorkee, Roorkee, 247667, India; email: vinodfcy@iitr.ernet.in
Appears in Collections:Journal Publications [CY]

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