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Article

Electrochemical Behavior of Some Cinchona Alkaloids Using Screen-Printed Electrodes

1
Department of Chemistry and Biology, University of Salerno, 84084 Fisciano, Italy
2
Department of Physical and Chemical Sciences, University of L’Aquila, 67100 Coppito, Italy
*
Author to whom correspondence should be addressed.
Sensors 2025, 25(7), 2216; https://doi.org/10.3390/s25072216
Submission received: 24 February 2025 / Revised: 24 March 2025 / Accepted: 31 March 2025 / Published: 1 April 2025
(This article belongs to the Special Issue Chemical Sensors for Toxic Chemical Detection: 2nd Edition)

Abstract

An effective deposition of a cinchonine layer on a platinum metal surface can be easily achieved through the cathodic reduction of a cinchonine hydrochloride methanolic solution at a controlled potential of −220 mV vs. the silver standard electrode (SSE). A coated screen-printed platinum electrode has proven to be suitable for cinchonine determination in water, urine, and serum at µg L−1 concentration levels using differential pulse voltammetry in a phosphate buffer solution (pH 7.0). The limits of detection (LOD) and quantitation (LOQ) were 0.6 µg L−1 and 1.8 µg L−1, respectively.
Keywords: voltammetric sensors; screen-printed electrodes; cinchona alkaloids; cathodic deposition; electrode surface coating voltammetric sensors; screen-printed electrodes; cinchona alkaloids; cathodic deposition; electrode surface coating
Graphical Abstract

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MDPI and ACS Style

Caruso, T.; Palombi, L. Electrochemical Behavior of Some Cinchona Alkaloids Using Screen-Printed Electrodes. Sensors 2025, 25, 2216. https://doi.org/10.3390/s25072216

AMA Style

Caruso T, Palombi L. Electrochemical Behavior of Some Cinchona Alkaloids Using Screen-Printed Electrodes. Sensors. 2025; 25(7):2216. https://doi.org/10.3390/s25072216

Chicago/Turabian Style

Caruso, Tonino, and Laura Palombi. 2025. "Electrochemical Behavior of Some Cinchona Alkaloids Using Screen-Printed Electrodes" Sensors 25, no. 7: 2216. https://doi.org/10.3390/s25072216

APA Style

Caruso, T., & Palombi, L. (2025). Electrochemical Behavior of Some Cinchona Alkaloids Using Screen-Printed Electrodes. Sensors, 25(7), 2216. https://doi.org/10.3390/s25072216

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