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Abstract

Silver(I)-selective membrane electrodes based on macrocycles possessing imine and thioether combinations

Author(s): Nidhi Rani Gupta, Susheel Mittal, S.K.Ashok Kumar, Mirac Ocak, Ummuhan Ocak

We report a newelectrode based on 14-membered N2S2 quadridenate 6,7, 15,16-tetrahydtodibenzo[f,m][1,8,4,11]dithiadiaza cyclotetradecine as a neutral carrier forAg+ ions. This PVCmembrane based silver ion-selective electrode gave a good Nernstian response of 59.0±1mV per decade for silver ion in the activity range 1ï‚´10-5 to 1ï‚´10-1M. The limit of detection observed was 3ï‚´10-6M. The present silver ion-selective electrode displayed very good selectivity for Ag+ ion against alkali, alkaline earth and some transition metal ions. Overall, the performance of the present silver ion-selective electrode based on the proposed ionophore is comparable to that of the electrode prepared with the available neutral carrier in terms of slope, linear range, and detection limit. The proposed silver selective electrode could be used in a pH range of 3.0-7.5. It was used as an indicator electrode in potentiometric titration of Ag+ with I- ion. Application of the electrodes for potentiometric titrations and determination ofAg+ concentration in some synthetically prepared sample solutions are reported.


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Analytical Chemistry: An Indian Journal received 378 citations as per Google Scholar report

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