A cobalt(II)-selective PVC membrane based on a Schiff base complex of N,N′-bis(salicylidene)-3,4-diaminotoluene

Vinod Kumar Gupta; Ashok Kumar Singh; Sameena Mehtab; Barkha Gupta

doi:10.1016/j.aca.2006.02.038

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A cobalt(II)-selective PVC membrane based on a Schiff base complex of N,N′-bis(salicylidene)-3,4-diaminotoluene

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A cobalt(II)-selective PVC membrane based on a Schiff base complex of N,N′-bis(salicylidene)-3,4-diaminotoluene

Vinod Kumar Gupta, Ashok Kumar Singh, Sameena Mehtab and Barkha Gupta

Analytica chimica acta, Vol.566(1), pp.5-10

27/04/2006

DOI: https://doi.org/10.1016/j.aca.2006.02.038

Abstract

Cobalt-selective electrode

PVC membrane electrodes

Schiff base and potentiometric sensors

A new PVC membrane electrode for Co 2+ based on N,N′-bis(salicylidene)-3,4-diaminotoluene, an excellent neutral carrier, has been fabricated using sodium tetraphenylborate (NaTPB) as an anionic excluder and dioctylphthalte (DOP) as a solvent mediator. The electrode exhibits a linear potential response in the concentration range of 7.9 × 10 −8 to 1.0 × 10 −1 M with a slope of 30 ± 0.2 mV per decade. The detection limit of the proposed sensor is 5.0 × 10 −8 M and it can be used over a period of 5 months. The proposed sensor revealed good selectivity over a wide variety of other cations including alkali, alkaline earth, heavy and transition metals and could be used in the pH range of 2.0–9.0. This electrode was successfully applied for the determination of Co 2+in real samples and as an indicator electrode in potentiometric titration of cobalt ions.

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Title: A cobalt(II)-selective PVC membrane based on a Schiff base complex of N,N′-bis(salicylidene)-3,4-diaminotoluene
Creators - without role: Vinod Kumar Gupta - Indian Institute of Technology Roorkee
Ashok Kumar Singh - Indian Institute of Technology Roorkee
Sameena Mehtab - Indian Institute of Technology Roorkee
Barkha Gupta - Indian Institute of Technology Roorkee
Publication Details: Analytica chimica acta, Vol.566(1), pp.5-10
Publisher: Elsevier B.V
Identifiers: 9936453308331
Academic Unit: King Abdulaziz University
Language: English
Resource Type: Journal article