Determination of Captopril using platinum coated nanoporous gold film electrode

Tavakkoli, Nahid; Soltani, Nasrin; Afsharpour, Arezo

Document Type : Original Research Article

Authors

Chemistry Department, Payame Noor University

Abstract

In this article electrochemical determination of captopril at the surface of the platinum coated nanoporous gold film (PtNPGF) electrode is reported using the cyclic voltammetry and amperometry. For the preparation of PtNPGF, the surface of NPGF electrode was covered with Cu layer using underpotential electrochemical deposition (UPD).Afterward, the copper layer is replaced with platinum ions via a spontaneous redox reaction to have a uniform Ptoverlayer. Under the optimized conditions, the amperometry peak current of captopril increased linearly with captopril concentration in the ranges of 4.70×10-8 to 4.57×10-5mol L−1. The detection limit of captopril was 1.2×10-8mol L−1. The results show a very good precision (R.S.D < 2.4%), suitable selectivity and very stable response for captopril. The proposed sensor was successfully applied for the determination of captopril in the urine samples of patient human.

Graphical Abstract

Keywords

Main Subjects

Analytical chemistry

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Iranian chemical communication

Determination of Captopril using platinum coated nanoporous gold film electrode

References

References

Volume 4, Issue 4, pp. 359-490, Serial No. 13
October 2016
Pages 414-432

Determination of Captopril using platinum coated nanoporous gold film electrode

References

References

Volume 4, Issue 4, pp. 359-490, Serial No. 13October 2016Pages 414-432

Volume 4, Issue 4, pp. 359-490, Serial No. 13
October 2016
Pages 414-432