| Full text | |
| Author(s): |
Beluomini, Maisa Azevedo
[1, 2]
;
Stradiotto, Nelson Ramos
[1, 2]
;
Boldrin Zanoni, Maria Valnice
[1]
Total Authors: 3
|
| Affiliation: | [1] Sao Paulo State Univ Unesp, Inst Chem, 55 Prof Francisco Degni St, BR-14800060 Araraquara, SP - Brazil
[2] Sao Paulo State Univ UNESP, Bioenergy Res Inst IPBEN, 55 Prof Francisco Degni St, BR-14800060 Araraquara, SP - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | JOURNAL OF ELECTROANALYTICAL CHEMISTRY; v. 904, JAN 1 2022. |
| Web of Science Citations: | 0 |
| Abstract | |
This paper reports the versatile preparation of three-dimensional nanostructured porous platinum (3DnpPt) directly on the surface of a screen-printed electrode via a simple electrochemical method and its application for the simultaneous voltammetric determination of hesperidin (HES) and narirutin (NAR) in residual water from the citrus industry. The surface morphology of the electrode was characterized by field-emission scanning electron microscopy (FEG-SEM), electron diffraction X-ray (EDX), X-ray photoelectron spectroscopy (XPS), and by the electrochemical impedance spectroscopic (EIS) technique. The results obtained from the voltammetric studies conducted showed that the sensor has good electrocatalytic activity and selectivity for HES and NAR oxidation. The linear scanning voltammetry (LSV) technique employed yielded linear ranges of 10 mu mol L-1 to 0.4 mmol L-1 and 10 mu mol L-1 to 0.5 mmol L-1, with detection limits of 6.61 mu mol L-1 and 0.21 mu mol L-1, and amperometric sensitivity of 0.52 A L mol-1 and 0.79 A L mol-1 for HES and NAR, respectively. The proposed 3DnpPt-SPE sensor also exhibited good repeatability and high selectivity, as well as long-term stability. The sensor was successfully applied in residual water sample for the simultaneous quantification of HES and NAR where good recovery rates were obtained. (AU) | |
| FAPESP's process: | 14/50945-4 - INCT 2014: National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactivies |
| Grantee: | Maria Valnice Boldrin |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 17/22401-8 - Fruit-refinery: obtention processes, characterization methods and generation of products derived from residues of the fruitculture |
| Grantee: | Nelson Ramos Stradiotto |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 18/12131-6 - Wireless electrochemical sensors based screen-printed electrodes modified with metallic nanopores for determination of flavonoids in wastes of the citrus industry |
| Grantee: | Maísa Azevedo Beluomini |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |