Enhanced sensitivity for Cu(II) by a salicylidine-functionalized polysiloxane carbon paste electrode

ABUSHAWISH, H and SAADEH, S and HUSSIEN, A (2008) Enhanced sensitivity for Cu(II) by a salicylidine-functionalized polysiloxane carbon paste electrode. Talanta, 76 (4). pp. 941-948. ISSN 00399140

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Abstract

A new approach for decreasing the detection limit for a copper(II) ion-selective electrode (ISE) is presented. The ISE is designed using salicylidine-functionalized polysiloxane in carbon paste. This work describes the attempts to develop the electrode and measurements of its characteristics. The new type of renewable three-dimensional chemically modified electrode could be used in a pH range of 2.3–5.4, and its detection limit is 2.7 × 10−8 mol L−1 (1.2 μg L−1). This sensor exhibits a good Nernstian slope of 29.4 ± 0.5 mV/decade in a wide linear concentration range of 2.3 × 10−7 to 1.0 × 10−3 mol L−1 of Cu(II). It has a short response time (∼8 s) and noticeably high selectivity over other Cu(II) selective electrodes. Finally, it was satisfactorily used as an indicator electrode in complexometric titration with EDTA and determination of copper(II) in miscellaneous samples such as urine and various water samples.

Item Type: Article
Subjects: Q Science > QD Chemistry
Depositing User: أ.د. حازم محمد عبد الحميد أبو شاويش
Date Deposited: 02 Apr 2018 08:10
Last Modified: 02 Apr 2018 08:10
URI: http://scholar.alaqsa.edu.ps/id/eprint/561

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