Electrochemical Behavior of Some Cinchona Alkaloids Using Screen-Printed Electrodes
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 h...
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MDPI AG
2025-04-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/25/7/2216 |
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| author | Tonino Caruso Laura Palombi |
| author_facet | Tonino Caruso Laura Palombi |
| author_sort | Tonino Caruso |
| collection | DOAJ |
| description | 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<sup>−1</sup> 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<sup>−1</sup> and 1.8 µg L<sup>−1</sup>, respectively. |
| format | Article |
| id | doaj-art-77732b455d334d3b89971baf6eef09f0 |
| institution | DOAJ |
| issn | 1424-8220 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj-art-77732b455d334d3b89971baf6eef09f02025-08-20T03:03:23ZengMDPI AGSensors1424-82202025-04-01257221610.3390/s25072216Electrochemical Behavior of Some Cinchona Alkaloids Using Screen-Printed ElectrodesTonino Caruso0Laura Palombi1Department of Chemistry and Biology, University of Salerno, 84084 Fisciano, ItalyDepartment of Physical and Chemical Sciences, University of L’Aquila, 67100 Coppito, ItalyAn 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<sup>−1</sup> 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<sup>−1</sup> and 1.8 µg L<sup>−1</sup>, respectively.https://www.mdpi.com/1424-8220/25/7/2216voltammetric sensorsscreen-printed electrodescinchona alkaloidscathodic depositionelectrode surface coating |
| spellingShingle | Tonino Caruso Laura Palombi Electrochemical Behavior of Some Cinchona Alkaloids Using Screen-Printed Electrodes Sensors voltammetric sensors screen-printed electrodes cinchona alkaloids cathodic deposition electrode surface coating |
| title | Electrochemical Behavior of Some Cinchona Alkaloids Using Screen-Printed Electrodes |
| title_full | Electrochemical Behavior of Some Cinchona Alkaloids Using Screen-Printed Electrodes |
| title_fullStr | Electrochemical Behavior of Some Cinchona Alkaloids Using Screen-Printed Electrodes |
| title_full_unstemmed | Electrochemical Behavior of Some Cinchona Alkaloids Using Screen-Printed Electrodes |
| title_short | Electrochemical Behavior of Some Cinchona Alkaloids Using Screen-Printed Electrodes |
| title_sort | electrochemical behavior of some cinchona alkaloids using screen printed electrodes |
| topic | voltammetric sensors screen-printed electrodes cinchona alkaloids cathodic deposition electrode surface coating |
| url | https://www.mdpi.com/1424-8220/25/7/2216 |
| work_keys_str_mv | AT toninocaruso electrochemicalbehaviorofsomecinchonaalkaloidsusingscreenprintedelectrodes AT laurapalombi electrochemicalbehaviorofsomecinchonaalkaloidsusingscreenprintedelectrodes |