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Dongmo LM, Guenang LS, Jiokeng SLZ, Kamdem AT, Doungmo G, Victor BC, Jović M, Lesch A, Tonlé IK, Girault H. A new sensor based on an amino-montmorillonite-modified inkjet-printed graphene electrode for the voltammetric determination of gentisic acid. Mikrochim Acta 2021; 188:36. [PMID: 33420843 DOI: 10.1007/s00604-020-04651-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 11/17/2020] [Indexed: 11/24/2022]
Abstract
An amperometric sensor based on an inkjet-printed graphene electrode (IPGE) modified with amine-functionalized montmorillonite (Mt-NH2) for the electroanalysis and quantification of gentisic acid (GA) has been developed. The organoclay used as IPGE modifier was prepared and characterized by infrared spectroscopy, X-ray diffraction, scanning electron microscopy, CHN elemental analysis, and thermogravimetry. The electrochemical features of the Mt-NH2/IPGE sensor were investigated by cyclic voltammetry and electrochemical impedance spectroscopy. The sensor exhibited charge selectivity ability which was exploited for the electrochemical oxidation of GA. The GA amperometric response was high in acidic medium (Brinton-Robinson buffer, pH 2) due to favorable interactions between the protonated amine groups and the negatively charged GA. Kinetic studies were also performed by cyclic voltammetry, and the obtained electron transfer rate constant of 11.3 s-1 indicated a fast direct electron transfer rate of GA to the electrode. An approach using differential pulse voltammetry was then developed for the determination of GA (at + 0.233 V vs. a pseudo Ag/Ag+ reference electrode), and under optimized conditions, the sensor showed high sensitivity, a wide working linear range from 1 to 21 μM (R2 = 0.999), and a low detection limit of 0.33 μM (0.051 ± 0.01 mg L-1). The proposed sensor was applied to quantify GA in a commercial red wine sample. The simple and rapid method developed using a cheap clay material could be employed for the determination of various phenolic acids.
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Affiliation(s)
- Liliane M Dongmo
- Department of Chemistry, Electrochemistry and Chemistry of Materials, University of Dschang, Dschang, Cameroon
| | - Léopoldine S Guenang
- Department of Chemistry, Electrochemistry and Chemistry of Materials, University of Dschang, Dschang, Cameroon
- Department of chemistry, Inorganic Chemistry Laboratory, University of Buea, Buea, Cameroon
| | - Sherman L Z Jiokeng
- Department of Chemistry, Electrochemistry and Chemistry of Materials, University of Dschang, Dschang, Cameroon
- Laboratoire de Chimie Physique et Microbiologie pour les Matériaux et l'Environnement (LCPME), UMR 7564 CNRS - Université de Lorraine, 405, rue de Vandœuvre, 54600, Villers-lès-Nancy, France
| | - Arnaud T Kamdem
- Institute of Microsystems Engineering IMTEK, Laboratory for Sensors, University of Freiburg, 79110, Freiburg, Germany
| | - Giscard Doungmo
- Department of Chemistry, Electrochemistry and Chemistry of Materials, University of Dschang, Dschang, Cameroon
- Institute of Inorganic Chemistry, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Straβe 2, 24118, Kiel, Germany
| | - Bassetto C Victor
- Laboratoire d'Electrochimie Physique et Analytique, EPFL, Rue de l'Industrie, CH-1951, Sion, Switzerland
| | - Milica Jović
- Laboratoire d'Electrochimie Physique et Analytique, EPFL, Rue de l'Industrie, CH-1951, Sion, Switzerland
| | - Andreas Lesch
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale del Risorgimento 4, 40136, Bologna, Italy
| | - Ignas K Tonlé
- Department of Chemistry, Electrochemistry and Chemistry of Materials, University of Dschang, Dschang, Cameroon.
| | - Hubert Girault
- Laboratoire d'Electrochimie Physique et Analytique, EPFL, Rue de l'Industrie, CH-1951, Sion, Switzerland
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Huck CW. Recent Developments in Solid-Phase Extraction for Near and Attenuated Total Reflection Infrared Spectroscopic Analysis. Molecules 2016; 21:E633. [PMID: 27187347 PMCID: PMC6274543 DOI: 10.3390/molecules21050633] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 05/04/2016] [Accepted: 05/09/2016] [Indexed: 11/16/2022] Open
Abstract
A review with more than 100 references on the principles and recent developments in the solid-phase extraction (SPE) prior and for in situ near and attenuated total reflection (ATR) infrared spectroscopic analysis is presented. New materials, chromatographic modalities, experimental setups and configurations are described. Their advantages for fast sample preparation for distinct classes of compounds containing different functional groups in order to enhance selectivity and sensitivity are discussed and compared. This is the first review highlighting both the fundamentals of SPE, near and ATR spectroscopy with a view to real sample applicability and routine analysis. Most of real sample analyses examples are found in environmental research, followed by food- and bioanalysis. In this contribution a comprehensive overview of the most potent SPE-NIR and SPE-ATR approaches is summarized and provided.
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Affiliation(s)
- Christian W Huck
- Institute of Analytical Chemistry and Radiochemistry, CCB-Center for Chemistry and Biomedicine, Leopold-Franzens University, Innrain 80/82, 6020 Innsbruck, Austria.
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Wang L, Halquist MS, Sweet DH. Simultaneous determination of gallic acid and gentisic acid in organic anion transporter expressing cells by liquid chromatography–tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 937:91-6. [DOI: 10.1016/j.jchromb.2013.08.024] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Revised: 07/26/2013] [Accepted: 08/16/2013] [Indexed: 10/26/2022]
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Vonaparti A, Lyris E, Panderi I, Koupparis M, Georgakopoulos C. Direct injection horse urine analysis for the quantification and identification of threshold substances for doping control. III. Determination of salicylic acid by liquid chromatography/quadrupole time-of-flight mass spectrometry. Anal Bioanal Chem 2009; 395:1403-10. [DOI: 10.1007/s00216-009-3047-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2009] [Revised: 08/04/2009] [Accepted: 08/07/2009] [Indexed: 11/29/2022]
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Karim MM, Alam SM, Lee SH. Application of a lanthanide composite nanoparticle-sensitized luminescence method for the determination of salicylic acid in pharmaceutical formulations and human plasma. LUMINESCENCE 2009; 23:417-23. [PMID: 18816464 DOI: 10.1002/bio.1072] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Terbium-acetylacetone (Tb-acac) composite nanoparticles were synthesized using the ultrasonic method. The nanoparticles are water-soluble, stable and have extremely narrow emission bands and high internal quantum efficiencies. They were used as fluorimetric probes in the determination of salicylic acid (SA), based on the fluorescence enhancement of nanoparticles through fluorescence resonance energy transfer (FRET). The influence of buffer solution was investigated. Under the optimum conditions, a linear calibration graph was obtained over the SA concentration range 5 x 10(-7)-1 x 10(-4) mol/L. The limit of detection was found to be 2.5 x 10(-8) mol/L. The relative standard deviation (RSD) for six repeated measurements of 1 x 10(-4) mol/LSA was 1.75%. The method was applied to the determination of SA in pharmaceutical formulations and human plasma. We believe that the proposed approach has great potential for clinical purposes.
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