Pseudospherical Bismuth Oxychloride-Modified Carbon Paste Electrode for the Determination of Quinine in Beverages
The extensive use of the alkaloid quinine (QN) in the cosmetic and food industries has induced major concerns relating to its impact on human health, considering its potential toxicity. Therefore, developing sensitive and selective electrochemical sensors is crucial for monitoring QN in environmenta...
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2024-10-01
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| author | Tijana Mutić Vesna Stanković Miloš Ognjanović Vladimir B. Nikolić Guanyue Gao Neso Sojic Dalibor Stanković |
| author_facet | Tijana Mutić Vesna Stanković Miloš Ognjanović Vladimir B. Nikolić Guanyue Gao Neso Sojic Dalibor Stanković |
| author_sort | Tijana Mutić |
| collection | DOAJ |
| description | The extensive use of the alkaloid quinine (QN) in the cosmetic and food industries has induced major concerns relating to its impact on human health, considering its potential toxicity. Therefore, developing sensitive and selective electrochemical sensors is crucial for monitoring QN in environmental, food, and pharmaceutical samples. To respond to this need, a surfactant-supported green synthesis approach, based on a straightforward, organic solvent-free hydrothermal method was employed to synthesize highly crystalline pseudospherical bismuth oxychloride (BiOCl) nanoparticles. This material was used for the enrichment of carbon paste electrodes and its further utilization for the detection and quantification of quinine. They have superior electrocatalytic performance, due to their size and morphology, and facilitate the interactions of the target with the electrode surface. Under optimal operating conditions, differential pulse voltammetry demonstrated a remarkable feature: a broad linear working range of 10 to 140 μM, a detection limit of 0.14 μM, and a high sensitivity of 1.995 μA μM<sup>−1</sup> cm<sup>−2</sup>. The suggested method’s satisfactory sensitivity, along with its good stability, repeatability, and reproducibility, strongly point to a possible use for identifying quinine in real samples. |
| format | Article |
| id | doaj-art-a0b08dc2b71342e3ba18cf4b2efe442e |
| institution | DOAJ |
| issn | 2673-3293 |
| language | English |
| publishDate | 2024-10-01 |
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| series | Electrochem |
| spelling | doaj-art-a0b08dc2b71342e3ba18cf4b2efe442e2025-08-20T02:53:43ZengMDPI AGElectrochem2673-32932024-10-015440742010.3390/electrochem5040027Pseudospherical Bismuth Oxychloride-Modified Carbon Paste Electrode for the Determination of Quinine in BeveragesTijana Mutić0Vesna Stanković1Miloš Ognjanović2Vladimir B. Nikolić3Guanyue Gao4Neso Sojic5Dalibor Stanković6Institute of Chemistry, Technology and Metallurgy, National Institute of the Republic of Serbia, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, SerbiaInstitute of Chemistry, Technology and Metallurgy, National Institute of the Republic of Serbia, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, SerbiaVinča Institute of Nuclear Sciences, University of Belgrade, Mike Petrovića Alasa 12–14, 11000 Belgrade, SerbiaFaculty of Chemistry, University of Belgrade, Studentski trg 12–16, 11000 Belgrade, SerbiaKey Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, ChinaInstitut des Sciences Moléculaires, University of Bordeaux, CNRS, Bordeaux INP, UMR 5255, 33607 Pessac, FranceFaculty of Chemistry, University of Belgrade, Studentski trg 12–16, 11000 Belgrade, SerbiaThe extensive use of the alkaloid quinine (QN) in the cosmetic and food industries has induced major concerns relating to its impact on human health, considering its potential toxicity. Therefore, developing sensitive and selective electrochemical sensors is crucial for monitoring QN in environmental, food, and pharmaceutical samples. To respond to this need, a surfactant-supported green synthesis approach, based on a straightforward, organic solvent-free hydrothermal method was employed to synthesize highly crystalline pseudospherical bismuth oxychloride (BiOCl) nanoparticles. This material was used for the enrichment of carbon paste electrodes and its further utilization for the detection and quantification of quinine. They have superior electrocatalytic performance, due to their size and morphology, and facilitate the interactions of the target with the electrode surface. Under optimal operating conditions, differential pulse voltammetry demonstrated a remarkable feature: a broad linear working range of 10 to 140 μM, a detection limit of 0.14 μM, and a high sensitivity of 1.995 μA μM<sup>−1</sup> cm<sup>−2</sup>. The suggested method’s satisfactory sensitivity, along with its good stability, repeatability, and reproducibility, strongly point to a possible use for identifying quinine in real samples.https://www.mdpi.com/2673-3293/5/4/27electrochemical sensorcarbon paste electrodenanomaterialsmalariaalkaloids |
| spellingShingle | Tijana Mutić Vesna Stanković Miloš Ognjanović Vladimir B. Nikolić Guanyue Gao Neso Sojic Dalibor Stanković Pseudospherical Bismuth Oxychloride-Modified Carbon Paste Electrode for the Determination of Quinine in Beverages Electrochem electrochemical sensor carbon paste electrode nanomaterials malaria alkaloids |
| title | Pseudospherical Bismuth Oxychloride-Modified Carbon Paste Electrode for the Determination of Quinine in Beverages |
| title_full | Pseudospherical Bismuth Oxychloride-Modified Carbon Paste Electrode for the Determination of Quinine in Beverages |
| title_fullStr | Pseudospherical Bismuth Oxychloride-Modified Carbon Paste Electrode for the Determination of Quinine in Beverages |
| title_full_unstemmed | Pseudospherical Bismuth Oxychloride-Modified Carbon Paste Electrode for the Determination of Quinine in Beverages |
| title_short | Pseudospherical Bismuth Oxychloride-Modified Carbon Paste Electrode for the Determination of Quinine in Beverages |
| title_sort | pseudospherical bismuth oxychloride modified carbon paste electrode for the determination of quinine in beverages |
| topic | electrochemical sensor carbon paste electrode nanomaterials malaria alkaloids |
| url | https://www.mdpi.com/2673-3293/5/4/27 |
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