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Sunon P, Ngokpho B, Kaewket K, Wannapaiboon S, Ngamchuea K. Copper(II) phthalocyanine as an electrocatalytic electrode for cathodic detection of urinary tryptophan. Analyst 2024; 149:3041-3051. [PMID: 38625079 DOI: 10.1039/d4an00418c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Herein, we introduce a novel method for tryptophan detection via a reduction reaction facilitated by its interaction with a copper(II) phthalocyanine (CuPc) electrocatalytic electrode. This method addresses challenges associated with the susceptibility of the oxidation response to interference from various species when measuring tryptophan in bodily fluids. The reduction currents exhibit a linear increase with tryptophan concentrations in two ranges: 0.0013-0.10 mM and 0.10-1.20 mM, with the sensitivities of 14.7 ± 0.5 μA mM-1 and 3.5 ± 0.1 μA mM-1, respectively. The limit of detection (LOD, 3SB/m) is determined to be 0.39 μM. The sensor exhibits excellent reproducibility, with the relative standard deviation of <5%. Application of the sensor to authentic urine samples yields a % recovery of 101 ± 4%.
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Affiliation(s)
- Pachanuporn Sunon
- School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Avenue, Suranaree, Muang, Nakhon Ratchasima 30000, Thailand.
- Institute of Research and Development, Suranaree University of Technology, 111 University Avenue, Suranaree, Muang, Nakhon Ratchasima, 30000, Thailand
| | - Busarakham Ngokpho
- School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Avenue, Suranaree, Muang, Nakhon Ratchasima 30000, Thailand.
| | - Keerakit Kaewket
- School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Avenue, Suranaree, Muang, Nakhon Ratchasima 30000, Thailand.
| | - Suttipong Wannapaiboon
- Synchrotron Light Research Institute, 111 University Avenue, Suranaree, Muang, Nakhon Ratchasima, 30000, Thailand
| | - Kamonwad Ngamchuea
- School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Avenue, Suranaree, Muang, Nakhon Ratchasima 30000, Thailand.
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Sunon P, Ngamchuea K. Methylene blue molecularly imprinted polymer for melatonin determination in urine and saliva samples. Mikrochim Acta 2023; 190:348. [PMID: 37566143 DOI: 10.1007/s00604-023-05930-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 07/25/2023] [Indexed: 08/12/2023]
Abstract
A highly sensitive and rapid electrochemical sensor was developed for detecting melatonin using a molecularly imprinted polymer (MIP) with methylene blue as the functional monomer and melatonin as the template. The MIP was synthesized via a simple electropolymerization process that did not require an initiating reagent. The sensor demonstrated good selectivity for melatonin against common interferences such as lactate, cytosine, cytidine, urea, ascorbic acid, creatine, creatinine, serotonin, and tryptophan. Melatonin detection was achieved at a potential of 0.60 V vs. Ag/AgCl with a sensitivity of 138.8 ± 4.7 µA µM‒1 in the linear range 0.097 - 200 µM and a limit of detection of 29 nM (3SB/m). The sensor exhibited excellent reproducibility and repeatability for both within (intra) and between (inter) electrodes (%RSD < 3% for n = 3). The sensor was applied to authentic urine and saliva samples with recoveries of 103 ± 1% and 102 ± 1%, respectively.
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Affiliation(s)
- Pachanuporn Sunon
- School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Avenue, Suranaree, Muang, Nakhon Ratchasima, 30000, Thailand
- Institute of Research and Development, Suranaree University of Technology, 111 University Avenue, Suranaree, Muang, Nakhon Ratchasima, 30000, Thailand
| | - Kamonwad Ngamchuea
- School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Avenue, Suranaree, Muang, Nakhon Ratchasima, 30000, Thailand.
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Cho J, Kim B, Venkateshalu S, Chung DY, Lee K, Choi SI. Electrochemically Activatable Liquid Organic Hydrogen Carriers and Their Applications. J Am Chem Soc 2023; 145:16951-16965. [PMID: 37439128 DOI: 10.1021/jacs.2c13324] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2023]
Abstract
Hydrogen has been chosen as an environmentally benign energy source to replace fossil-fuel-based energy systems. Since hydrogen is difficult to store and transport in its gaseous phase, thermochemical liquid organic hydrogen carriers (LOHCs) have been developed as one of the alternative technologies. However, the high temperature and pressure requirements of thermochemical LOHC systems result in huge energy waste and impracticality. This Perspective proposes electrochemical (EC)-LOHCs capable of more efficient, safer, and lower temperature and pressure hydrogen storage/utilization. To enable this technology, several EC-LOHC candidates such as isopropanol, phenolic compounds, and organic acids are described, and the latest research trends and design concepts of related homo/hetero-based electrocatalysts are discussed. In addition, we propose efficient fuel-cell-based systems that implement electrochemical (de)hydrogenation of EC-LOHCs and present prospects for relevant technologies.
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Affiliation(s)
- Juhyun Cho
- Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Byeongyoon Kim
- Department of Chemistry and Research Institute for Natural Sciences, Korea University, Seoul 02841, Republic of Korea
| | - Sandhya Venkateshalu
- Department of Chemistry and Research Institute for Natural Sciences, Korea University, Seoul 02841, Republic of Korea
| | - Dong Young Chung
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Kwangyeol Lee
- Department of Chemistry and Research Institute for Natural Sciences, Korea University, Seoul 02841, Republic of Korea
| | - Sang-Il Choi
- Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University, Daegu 41566, Republic of Korea
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Choukairi M, Bouchta D, Bounab L, González‐Romero E, Achache M, Draoui K, Chaouket F, Raissouni I, Gharous M. A Carbon Paste Electrode Modified by Bentonite and l-Cysteine for Simultaneous Determination of Ascorbic and Uric Acids: Application in Biological Fluids. ChemistryOpen 2023; 12:e202200201. [PMID: 36722827 PMCID: PMC9891123 DOI: 10.1002/open.202200201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 12/13/2022] [Indexed: 02/02/2023] Open
Abstract
A novel modification of a paste carbon electrode by Bentonite (Bent) and l-Cysteine (l-Cyst) was carried out for uric acid (UA) and ascorbic acid (AA) detection and quantification. Morphological and compositional characterization of the electrode surface were carried out using electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopic analysis (EDS). Cyclic voltammetry (CV) and square wave voltammetry (SWV) techniques were used to analyze UA and AA. The obtained sensor shows a good stability, sensibility, selectivity, and regeneration ability. Accordingly, the limit of detection (LOD) is found to be 0.031 μm and 9.6 μm for UA and AA, respectively. A good linearity in the range of 0.1 to 100 μm for UA and 10 to 1000 μm for AA was obtained. The peak-to-peak separation of UA-AA (ΔEUA-AA ) was determined to be 330 mV. In addition, the sensor is applied successfully to monitor UA and AA in serum samples.
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Affiliation(s)
- Mohamed Choukairi
- Laboratory of Materials and Interfacial SystemsFaculty of ScienceAbdelmalek Essaadi UniversityB.P. 212193002TetouanMorocco
| | - Dounia Bouchta
- Laboratory of Materials and Interfacial SystemsFaculty of ScienceAbdelmalek Essaadi UniversityB.P. 212193002TetouanMorocco
| | - Loubna Bounab
- Laboratory of Information System and Software EngineeringNational School of Applied Sciences of TetouanAbdelmalek Essaadi University93000TetouanMorocco
| | | | - Mohamed Achache
- Laboratory of Materials and Interfacial SystemsFaculty of ScienceAbdelmalek Essaadi UniversityB.P. 212193002TetouanMorocco
| | - Khalid Draoui
- Laboratory of Materials and Interfacial SystemsFaculty of ScienceAbdelmalek Essaadi UniversityB.P. 212193002TetouanMorocco
| | - Faiza Chaouket
- Laboratory of Materials and Interfacial SystemsFaculty of ScienceAbdelmalek Essaadi UniversityB.P. 212193002TetouanMorocco
| | - Ihssane Raissouni
- Laboratory of Materials and Interfacial SystemsFaculty of ScienceAbdelmalek Essaadi UniversityB.P. 212193002TetouanMorocco
| | - Mouad Gharous
- Laboratory of Materials and Interfacial SystemsFaculty of ScienceAbdelmalek Essaadi UniversityB.P. 212193002TetouanMorocco
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Kaewket K, Ngamchuea K. Microporous carbon for fast and simple electrochemical detection of imidacloprid insecticide in fruit and water samples. RSC Adv 2023; 13:4532-4541. [PMID: 36760309 PMCID: PMC9893441 DOI: 10.1039/d3ra00192j] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 01/27/2023] [Indexed: 02/05/2023] Open
Abstract
Herein, a fast and sensitive electrochemical sensor was developed for imidacloprid detection using low-cost disposable microporous carbon screen-printed electrodes. The electrochemical behaviour of imidacloprid at the microporous material was investigated in detail. The developed sensor allowed imidacloprid detection in the linear range of 0.00-1.00 mM with a sensitivity of 14.43 ± 0.42 μA mM-1 and a detection limit of 2.54 μM (3s B/m). The sensor showed excellent selectivity and high tolerance to possible interference from other tested insecticides and ions. Excellent repeatability (3.42%, n = 3) and reproducibility (2.23%, n = 3) were demonstrated. Application of the sensor in various fruit and water samples without any treatment showed 96.2-103.0% recoveries. The developed sensor further revealed that the most effective method for removing imidacloprid residue from fruit samples was via washing with a mixture of 5% w/v NaCl and 5% w/v bicarbonate at 40 °C.
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Affiliation(s)
- Keerakit Kaewket
- School of Chemistry, Institute of Science, Suranaree University of Technology 111 University Ave, Muang District Nakhon Ratchasima 30000 Thailand +66 44 224 637
| | - Kamonwad Ngamchuea
- School of Chemistry, Institute of Science, Suranaree University of Technology 111 University Ave, Muang District Nakhon Ratchasima 30000 Thailand +66 44 224 637
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Ngamchuea K, Moonla C, Watwiangkham A, Wannapaiboon S, Suthirakun S. Electrochemical and structural investigation of copper phthalocyanine: Application in the analysis of kidney disease biomarker. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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