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Wang XQ, Yang J, Zhang M, Wu D, Hu T, Yang J. Highly stable lanthanide(III) metal-organic frameworks as ratiometric fluorescence sensors for vitamin B 6. Dalton Trans 2023; 52:13387-13394. [PMID: 37676645 DOI: 10.1039/d3dt01900d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
Three lanthanide(III)-based metal-organic frameworks, formulated as [(CH3)2NH2]2[Ln6(μ3-OH)8(EBTC)3(H2O)6]·4H2O·2DMF (Ln = Eu (1), Tb (2) and Ce (3)), were synthesized using a rigid tetracarboxylate organic ligand (1,1'-ethynebenzene-3,3',5,5'-tetracarboxylic acid, H4EBTC). Complexes 1-3 possess 12-connected hexanuclear [Ln6(μ3-OH)8(OOC-)12(H2O)6] clusters with the ftw topology, which were stable in water and acid/alkaline aqueous solution. Due to the antenna effect, complexes 1 and 2 presented double fluorescence emission peaks, which are the characteristic emission peaks of Ln3+ ions and the ligand H4EBTC, respectively. The doped bimetallic EuxTb1--x-MOFs were obtained by tuning the Eu(III)/Tb(III) ratio during the reaction, which exhibited a colour change from red, orange, and yellow to green. Furthermore, complexes 1, 2 and Eu2Tb8-MOF as ratiometric fluorescence sensors exhibited excellent sensing ability for vitamin B6 (VB6) in phosphate buffer solution (pH = 7.35) and real samples with high selectivity and reusability. The low detection limit (LOD) values were calculated to be 1.03 μM for complex 1, 0.25 μM for complex 2 and 0.11 μM for Eu2Tb8-MOF in aqueous solution. Finally, a visual film based on Ln-MOF@SA was prepared to detect VB6 with high reusability.
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Affiliation(s)
- Xiao-Qing Wang
- Department of Chemistry, College of Science, North University of China, Taiyuan 030051, China.
- Shanxi Key Laboratory of advanced carbon based electrode materials, North University of China, Taiyuan 030051, China
| | - Jiandong Yang
- Department of Chemistry, College of Science, North University of China, Taiyuan 030051, China.
| | - Man Zhang
- Department of Chemistry, College of Science, North University of China, Taiyuan 030051, China.
| | - Dan Wu
- Department of Chemistry, College of Science, North University of China, Taiyuan 030051, China.
| | - Tuoping Hu
- Department of Chemistry, College of Science, North University of China, Taiyuan 030051, China.
- Shanxi Key Laboratory of advanced carbon based electrode materials, North University of China, Taiyuan 030051, China
| | - Jie Yang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, and School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China.
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2
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Morozov R, Stanković D, Avdin V, Zherebtsov D, Romashov M, Selezneva A, Uchaev D, Senin A, Chernukha A. The Effect of Rare-Earth Elements on the Morphological Aspect of Borate and Electrocatalytic Sensing of Biological Compounds. BIOSENSORS 2023; 13:901. [PMID: 37887094 PMCID: PMC10605444 DOI: 10.3390/bios13100901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 09/07/2023] [Accepted: 09/14/2023] [Indexed: 10/28/2023]
Abstract
Adjusting the morphological characteristics of a material can result in improved electrocatalytic capabilities of the material itself. An example of this is the introduction of rare-earth elements into the borate structure, which gives a new perspective on the possibilities of this type of material in the field of (bio)sensing. In this paper, we present the preparation of borates including La, Nd and Dy and their application for the modification of a glassy carbon electrode, which is used for the non-enzymatic detection of a biologically relevant molecule, vitamin B6 (pyridoxine). Compared with the others, dysprosium borate has the best electrocatalytic performance, showing the highest current and the lowest impedance, respectively, as determined using cyclic voltammetry and impedance tests. Quantitative testing of B6 was performed in DPV mode in a Britton-Robinson buffer solution with a pH of 6 and an oxidation potential of about +0.8 V. The calibration graph for the evaluation of B6 has a linear range from 1 to 100 μM, with a correlation coefficient of 0.9985 and a detection limit of 0.051 μM. The DyBO3-modified electrode can be used repeatedly, retaining more than 90% of the initial signal level after six cycles. The satisfactory selectivity offered a potential practical application of the chosen method for the monitoring of pyridoxine in artificially prepared biological fluids with acceptable recovery. In light of all the obtained results, this paper shows an important approach for the successful design of electrocatalysts with tuned architecture and opens new strategies for the development of materials for the needs of electrochemical (bio)sensing.
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Affiliation(s)
- Roman Morozov
- Nanotechnology Research Center, South Ural State University, 454080 Chelyabinsk, Russia; (R.M.); (V.A.); (D.Z.); (M.R.); (A.S.); (D.U.); (A.S.); (A.C.)
| | - Dalibor Stanković
- Faculty of Chemistry, University of Belgrade, 11000 Belgrade, Serbia
| | - Viacheslav Avdin
- Nanotechnology Research Center, South Ural State University, 454080 Chelyabinsk, Russia; (R.M.); (V.A.); (D.Z.); (M.R.); (A.S.); (D.U.); (A.S.); (A.C.)
| | - Dmitri Zherebtsov
- Nanotechnology Research Center, South Ural State University, 454080 Chelyabinsk, Russia; (R.M.); (V.A.); (D.Z.); (M.R.); (A.S.); (D.U.); (A.S.); (A.C.)
| | - Mikhail Romashov
- Nanotechnology Research Center, South Ural State University, 454080 Chelyabinsk, Russia; (R.M.); (V.A.); (D.Z.); (M.R.); (A.S.); (D.U.); (A.S.); (A.C.)
| | - Anastasia Selezneva
- Nanotechnology Research Center, South Ural State University, 454080 Chelyabinsk, Russia; (R.M.); (V.A.); (D.Z.); (M.R.); (A.S.); (D.U.); (A.S.); (A.C.)
| | - Daniil Uchaev
- Nanotechnology Research Center, South Ural State University, 454080 Chelyabinsk, Russia; (R.M.); (V.A.); (D.Z.); (M.R.); (A.S.); (D.U.); (A.S.); (A.C.)
| | - Anatoly Senin
- Nanotechnology Research Center, South Ural State University, 454080 Chelyabinsk, Russia; (R.M.); (V.A.); (D.Z.); (M.R.); (A.S.); (D.U.); (A.S.); (A.C.)
| | - Alexander Chernukha
- Nanotechnology Research Center, South Ural State University, 454080 Chelyabinsk, Russia; (R.M.); (V.A.); (D.Z.); (M.R.); (A.S.); (D.U.); (A.S.); (A.C.)
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3
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Vu T, Nguyen M, Do T, Nguyen LH, Nguyen VA, Nguyen DT. Adsorption of copper ions onto poly(1,8‐diaminonaphthalene)/graphene film for voltammetric determination of pyridoxine. ELECTROANAL 2022. [DOI: 10.1002/elan.202100643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Trong Vu
- Hanoi University of Science and Technology VIET NAM
| | - Mai Nguyen
- Hanoi University of Science and Technology VIET NAM
| | - Thuy Do
- Institute of Chemistry and Materials VIET NAM
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4
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Rison S, Mathew AT, George L, Maiyalagan T, Hegde G, Varghese A. Pt Nanospheres Decorated Graphene-β-CD Modified Pencil Graphite Electrode for the Electrochemical Determination of Vitamin B6. Top Catal 2022. [DOI: 10.1007/s11244-021-01559-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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5
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Esokkiya A, Sudalaimani S, Sanjeev Kumar K, Sampathkumar P, Suresh C, Giribabu K. Poly(methylene blue)-Based Electrochemical Platform for Label-Free Sensing of Acrylamide. ACS OMEGA 2021; 6:9528-9536. [PMID: 33869933 PMCID: PMC8047665 DOI: 10.1021/acsomega.0c06315] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 03/22/2021] [Indexed: 05/03/2023]
Abstract
The present work reports the electrochemical sensing of acrylamide (AM) using a poly(methylene blue)-modified glassy carbon electrode (PMB/GCE) where PMB functions as an electrochemical reporter. PMB was prepared by electrochemical polymerization of methylene blue. Electrochemical sensing of AM was facilitated by the interaction between AM and PMB. Further the interaction between AM and PMB was investigated using ultraviolet-visible (UV-vis) spectroscopy and Raman analysis. The surface morphology was confirmed by atomic force microscopy (AFM) and field emission scanning electron microscopy (FESEM) analyses. PMB/GCE was further characterized by X-ray photoelectron spectroscopy (XPS), and the electrochemical performance was assessed using cyclic voltammetry and differential pulse voltammetry. Cyclic voltammetry analysis showed a decrease in current at the redox center of PMB upon addition of AM. The association constant and binding number of AM with PMB/GCE were calculated using differential pulse voltammetry and found to be 8.9 × 106 M-1 and 0.64 (∼1), respectively. The results indicated a strong interaction of AM on the PMB/GCE surface. Further, chronocoulometry analysis of PMB/GCE in the presence of AM showed a decrease in charge due to the interaction of AM with PMB. Under optimized conditions, PMB/GCE exhibited a decrease in current proportional to the concentration of AM in the range of 0.025-16 μM with sensitivity and detection limit 0.252 μA nM-1 and 0.13 nM, respectively. Real sample analysis was carried out by the standard addition method using the solution extracted from potato chips.
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Affiliation(s)
- Anthonysamy Esokkiya
- Electrodics
and Electrocatalysis Division, Central Electrochemical
Research Institute (CSIR-CECRI), Karaikudi, Tamil Nadu 630003, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sudalaimuthu Sudalaimani
- Electrodics
and Electrocatalysis Division, Central Electrochemical
Research Institute (CSIR-CECRI), Karaikudi, Tamil Nadu 630003, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Kannan Sanjeev Kumar
- Electrodics
and Electrocatalysis Division, Central Electrochemical
Research Institute (CSIR-CECRI), Karaikudi, Tamil Nadu 630003, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Prakasam Sampathkumar
- Electrodics
and Electrocatalysis Division, Central Electrochemical
Research Institute (CSIR-CECRI), Karaikudi, Tamil Nadu 630003, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Chinnathambi Suresh
- Electrodics
and Electrocatalysis Division, Central Electrochemical
Research Institute (CSIR-CECRI), Karaikudi, Tamil Nadu 630003, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Krishnan Giribabu
- Electrodics
and Electrocatalysis Division, Central Electrochemical
Research Institute (CSIR-CECRI), Karaikudi, Tamil Nadu 630003, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- ,
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6
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Dokur E, Gorduk O, Sahin Y. Cost‐effective and Facile Production of a Phosphorus‐doped Graphite Electrode for the Electrochemical Determination of Pyridoxine. ELECTROANAL 2021. [DOI: 10.1002/elan.202100038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Ebrar Dokur
- Department of Chemistry Faculty of Arts and Science Yildiz Technical University TR34210 Istanbul Turkey
| | - Ozge Gorduk
- Department of Chemistry Faculty of Arts and Science Yildiz Technical University TR34210 Istanbul Turkey
| | - Yucel Sahin
- Department of Chemistry Faculty of Arts and Science Yildiz Technical University TR34210 Istanbul Turkey
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7
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Hengameh Zabolestani, Sarhadi H, Beitollahi H. Electrochemical Sensor Based on Modified Screen Printed Electrode for Vitamin B6 Detection. SURFACE ENGINEERING AND APPLIED ELECTROCHEMISTRY 2021. [DOI: 10.3103/s1068375521020149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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Development of carbon-based sensors for electrochemical quantification of vitamins B2 and B6 at nanomolar levels. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-020-01387-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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9
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Electrochemical quantification of pyridoxine (VB6) in human blood from other water-soluble vitamins. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-019-01049-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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10
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Tigari G, Manjunatha JG. Electrochemical Preparation of Poly(arginine)-Modified Carbon Nanotube Paste Electrode and its Application for the Determination of Pyridoxine in the Presence of Riboflavin: An Electroanalytical Approach. JOURNAL OF ANALYSIS AND TESTING 2019. [DOI: 10.1007/s41664-019-00116-w] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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11
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Westmacott KL, Crew AP, Doran O, Hart JP. Novel, rapid, low-cost screen-printed (bio)sensors for the direct analysis of boar taint compounds androstenone and skatole in porcine adipose tissue: Comparison with a high-resolution gas chromatographic method. Biosens Bioelectron 2019; 150:111837. [PMID: 31735622 DOI: 10.1016/j.bios.2019.111837] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 10/21/2019] [Accepted: 10/31/2019] [Indexed: 10/25/2022]
Abstract
This is the first report on the fabrication, characterisation and application of an electrochemical (bio)sensor system for the simultaneous measurement of skatole and androstenone. A biosensor for androstenone was fabricated using a Meldola's Blue modified SPCE (MB-SPCE) by depositing NADH and the enzyme 3α-hydroxysteroid dehydrogenase onto the MB-SPCE surface; samples of adipose tissue were analysed using the biosensors in conjunction with chronoamperometry. Cyclic voltammetry was used to investigate the electrochemical behaviour of skatole at a screen-printed carbon electrode (SPCE vs. Ag/AgCl). An oxidation peak was observed around +0.55 V (vs. Ag/AgCl) and differential pulse voltammetry was applied for quantification of skatole in adipose tissue (in-situ). Quantitative analysis was achieved using calibration plots obtained from fortified meat samples. The concentrations obtained by the electrochemical and gas chromatographic (GC) methods demonstrated a good positive correlation. The (bio)sensor system completed both measurements within 60 s, as compared to several hours for GC, and at a considerably reduced cost and complexity. Consequently, the novel (bio)sensor system should have applications for analysis of carcasses on the abattoir processing line.
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Affiliation(s)
- K L Westmacott
- Centre for Research in Biosciences, Faculty of Health and Applied Sciences, University of the West England, Frenchay Campus, Coldharbour Lane, Bristol, BS16 1QY, UK
| | - A P Crew
- Centre for Research in Biosciences, Faculty of Health and Applied Sciences, University of the West England, Frenchay Campus, Coldharbour Lane, Bristol, BS16 1QY, UK
| | - O Doran
- Centre for Research in Biosciences, Faculty of Health and Applied Sciences, University of the West England, Frenchay Campus, Coldharbour Lane, Bristol, BS16 1QY, UK
| | - J P Hart
- Centre for Research in Biosciences, Faculty of Health and Applied Sciences, University of the West England, Frenchay Campus, Coldharbour Lane, Bristol, BS16 1QY, UK.
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12
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Farag AS, Pravcová K, Česlová L, Vytřas K, Sýs M. Simultaneous Determination of Caffeine and Pyridoxine in Energy Drinks using Differential Pulse Voltammetry at Glassy Carbon Electrode Modified with Nafion®. ELECTROANAL 2019. [DOI: 10.1002/elan.201800646] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Amir Shaaban Farag
- Department of Analytical Chemistry, Faculty of Chemical TechnologyUniversity of Pardubice Studentská 573, 532 10 Pardubice Czech Republic
| | - Kateřina Pravcová
- Department of Analytical Chemistry, Faculty of Chemical TechnologyUniversity of Pardubice Studentská 573, 532 10 Pardubice Czech Republic
| | - Lenka Česlová
- Department of Analytical Chemistry, Faculty of Chemical TechnologyUniversity of Pardubice Studentská 573, 532 10 Pardubice Czech Republic
| | - Karel Vytřas
- Department of Analytical Chemistry, Faculty of Chemical TechnologyUniversity of Pardubice Studentská 573, 532 10 Pardubice Czech Republic
| | - Milan Sýs
- Department of Analytical Chemistry, Faculty of Chemical TechnologyUniversity of Pardubice Studentská 573, 532 10 Pardubice Czech Republic
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13
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Manoj D, Rajendran S, Qin J, Sundaravadivel E, Yola ML, Atar N, Gracia F, Boukherroub R, Gracia-Pinilla M, Gupta VK. Heterostructures of mesoporous TiO2 and SnO2 nanocatalyst for improved electrochemical oxidation ability of vitamin B6 in pharmaceutical tablets. J Colloid Interface Sci 2019; 542:45-53. [DOI: 10.1016/j.jcis.2019.01.118] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 01/25/2019] [Accepted: 01/28/2019] [Indexed: 11/29/2022]
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14
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Porto LS, da Silva DN, Silva MC, Pereira AC. Electrochemical Sensor Based on Multi‐walled Carbon Nanotubes and Cobalt Phthalocyanine Composite for Pyridoxine Determination. ELECTROANAL 2019. [DOI: 10.1002/elan.201800789] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Laís Sales Porto
- Departamento de Ciências NaturaisUniversidade Federal de São João del Rei (UFSJ)Campus Dom Bosco Praça Dom Helvécio 74, Fábricas 36301-160 São João del Rei, MG Brazil
| | - Daniela Nunes da Silva
- Departamento de Ciências NaturaisUniversidade Federal de São João del Rei (UFSJ)Campus Dom Bosco Praça Dom Helvécio 74, Fábricas 36301-160 São João del Rei, MG Brazil
| | - Maria Cristina Silva
- Departamento de Ciências NaturaisUniversidade Federal de São João del Rei (UFSJ)Campus Dom Bosco Praça Dom Helvécio 74, Fábricas 36301-160 São João del Rei, MG Brazil
| | - Arnaldo César Pereira
- Departamento de Ciências NaturaisUniversidade Federal de São João del Rei (UFSJ)Campus Dom Bosco Praça Dom Helvécio 74, Fábricas 36301-160 São João del Rei, MG Brazil
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15
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Voltammetric determination of vitamin B6 (pyridoxine) at a graphite screen-printed electrode modified with graphene oxide/Fe3O4@SiO2 nanocomposite. Russ Chem Bull 2018. [DOI: 10.1007/s11172-018-2064-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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16
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Westmacott K, Crew A, Doran O, Hart J. A novel electroanalytical approach to the measurement of B vitamins in food supplements based on screen-printed carbon sensors. Talanta 2018; 181:13-18. [DOI: 10.1016/j.talanta.2017.12.074] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 12/20/2017] [Accepted: 12/22/2017] [Indexed: 11/27/2022]
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17
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Karimi-Maleh H, Shojaei M, Amini F, Akbari A. Analysis of Levodopa in the Presence of Vitamin B6
Using Carbon Paste Electrode Modified with 1-Butyl-3 methylimidazolium Hexafluorophosphate and CuO Nanoparticles. ELECTROANAL 2017. [DOI: 10.1002/elan.201600785] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hassan Karimi-Maleh
- Department of Chemical Engineering, Laboratory of Nanotechnology; Quchan University of Advanced Technology; Quchan Iran
| | - Moein Shojaei
- Department of Chemistry; Graduate University of Advanced Technology; Kerman Iran
| | - Fatemeh Amini
- Institute of Nano Science and Nano Technology; University of Kashan; Kashan P.O. Box 87317-51167 I.R. Iran
| | - Ahmad Akbari
- Institute of Nano Science and Nano Technology; University of Kashan; Kashan P.O. Box 87317-51167 I.R. Iran
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18
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Alpar N, Pınar PT, Yardım Y, Şentürk Z. Voltammetric Method for the Simultaneous Determination of Melatonin and Pyridoxine in Dietary Supplements Using a Cathodically Pretreated Boron-doped Diamond Electrode. ELECTROANAL 2017. [DOI: 10.1002/elan.201700077] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Nurcan Alpar
- Yuzuncu Yil University; Faculty of Pharmacy, Department of Analytical Chemistry; 65080 Van Turkey
| | - Pınar Talay Pınar
- Yuzuncu Yil University; Faculty of Pharmacy, Department of Analytical Chemistry; 65080 Van Turkey
| | - Yavuz Yardım
- Yuzuncu Yil University; Faculty of Pharmacy, Department of Analytical Chemistry; 65080 Van Turkey
| | - Zühre Şentürk
- Yuzuncu Yil University; Faculty of Science, Department of Analytical Chemistry; 65080 Van Turkey
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19
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Labib M, Sargent EH, Kelley SO. Electrochemical Methods for the Analysis of Clinically Relevant Biomolecules. Chem Rev 2016; 116:9001-90. [DOI: 10.1021/acs.chemrev.6b00220] [Citation(s) in RCA: 555] [Impact Index Per Article: 69.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Mahmoud Labib
- Department
of Pharmaceutical Sciences, University of Toronto, Toronto, Ontario M5S 3M2, Canada
| | | | - Shana O. Kelley
- Department
of Pharmaceutical Sciences, University of Toronto, Toronto, Ontario M5S 3M2, Canada
- Institute
of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada
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20
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Motaghedifard M, Behpour M, Ghoreishi SM, Honarmand E. Electro-deposition of gold nanostructures on carbon paste electrode: a platform with signal amplification for voltammetric study and determination of pyridoxine (vitamin B6). RUSS J ELECTROCHEM+ 2016. [DOI: 10.1134/s1023193516050098] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Raj MA, Gowthaman NSK, John SA. Highly sensitive interference-free electrochemical determination of pyridoxine at graphene modified electrode: Importance in Parkinson and Asthma treatments. J Colloid Interface Sci 2016; 474:171-8. [PMID: 27124811 DOI: 10.1016/j.jcis.2016.04.025] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 04/17/2016] [Accepted: 04/19/2016] [Indexed: 10/21/2022]
Abstract
To reduce the side effects in the medication of Parkinson and Asthma, pyridoxine (PY) is administered along with l-3,4-dihydroxyphenyl alanine (l-dopa) and theophylline (TP), respectively. However, excessive dosage of PY leads to nervous disorder. Thus, a sensitive and selective electrochemical method was developed for the determination of PY in the presence of major interferences including TP, l-dopa, ascorbic acid (AA) and riboflavin (RB) using electrochemically reduced graphene oxide (ERGO) film modified glassy carbon electrode (GCE) in this paper. The ERGO fabrication process involves the nucleophilic substitution of graphene oxide at basic pH on amine terminal of 1,6-hexadiamine which was pre-assembled on GCE followed by electrochemical reduction. The electrocatalytic activity of the ERGO modified electrode was examined towards the oxidation of PY. It greatly enhanced the oxidation current of PY in contrast to bare and GO modified GCEs due to facile electron transfer besides π-π interaction between ERGO film and PY. Since TP and l-dopa drugs antagonize the drug action of PY, ERGO modified GCE was also used for the simultaneous determination of PY and l-dopa and PY and TP. Further, the selective determination of PY in the presence of other water soluble vitamins such as ascorbic acid and riboflavin was also demonstrated. Using amperometry, detection of 100nM PY was achieved and the detection limit was found to be 5.6×10(-8)M (S/N=3). The practical application of the present method was demonstrated by determining the concentration of PY in human blood serum and commercial drugs.
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Affiliation(s)
- M Amal Raj
- Department of Chemistry, Loyola College, Chennai 600 034, Tamil Nadu, India
| | - N S K Gowthaman
- Centre for Nanoscience and Nanotechnology, Department of Chemistry, Gandhigram Rural Institute, Gandhigram 624 302, Dindigul, Tamil Nadu, India
| | - S Abraham John
- Centre for Nanoscience and Nanotechnology, Department of Chemistry, Gandhigram Rural Institute, Gandhigram 624 302, Dindigul, Tamil Nadu, India.
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22
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Rahi A, Karimian K, Heli H. Nanostructured materials in electroanalysis of pharmaceuticals. Anal Biochem 2016; 497:39-47. [PMID: 26751130 DOI: 10.1016/j.ab.2015.12.018] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2015] [Revised: 12/24/2015] [Accepted: 12/28/2015] [Indexed: 01/21/2023]
Abstract
Basic strategies and recent developments for the enhancement of the sensory performance of nanostructures in the electroanalysis of pharmaceuticals are reviewed. A discussion of the properties of nanostructures and their application as modified electrodes for drug assays is presented. The electrocatalytic effect of nanostructured materials and their application in determining low levels of drugs in pharmaceutical forms and biofluids are discussed.
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Affiliation(s)
- A Rahi
- Nanomedicine and Nanobiology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - K Karimian
- Andisheh Pharma Sciences R&D Inc., Yousefabad, Jahanarar Avenue, Tehran, Iran
| | - H Heli
- Nanomedicine and Nanobiology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran; Department of Nanomedicine, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran.
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23
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Liu G, Wang YM, Sun DM. Simultaneous determination of vitamins B2, B6 and C using silver-doped poly(L-arginine)-modified glassy carbon electrode. JOURNAL OF ANALYTICAL CHEMISTRY 2015. [DOI: 10.1134/s1061934815120114] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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24
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Kumar DR, Manoj D, Santhanalakshmi J, Shim JJ. Au-CuO core-shell nanoparticles design and development for the selective determination of Vitamin B6. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.07.034] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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25
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Kassem MA, Hazazi OA, Ohsaka T, Awad MI. Electroanalysis of Pyridoxine at Copper Nanoparticles Modified Polycrystalline Gold Electrode. ELECTROANAL 2015. [DOI: 10.1002/elan.201500209] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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26
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Barsan MM, Toledo CT, Brett CM. New electrode architectures based on poly(methylene green) and functionalized carbon nanotubes: Characterization and application to detection of acetaminophen and pyridoxine. J Electroanal Chem (Lausanne) 2015. [DOI: 10.1016/j.jelechem.2014.10.026] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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27
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Lee JHQ, Yue Y, Ganguly R, Webster RD. Electrochemical Study of Pyridoxine (Vitamin B6) in Acetonitrile. ChemElectroChem 2014. [DOI: 10.1002/celc.201402340] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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28
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Razmi H, Jabbari M, Mohammad-Rezaei R. Electrochemically Reduced Graphene Oxide Modified Carbon Ceramic Electrode for the Determination of Pyridoxine. ACTA ACUST UNITED AC 2014. [DOI: 10.1080/22297928.2014.925826] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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29
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Nie T, Zhang K, Xu J, Lu L, Bai L. A facile one-pot strategy for the electrochemical synthesis of poly(3,4-ethylenedioxythiophene)/Zirconia nanocomposite as an effective sensing platform for vitamins B2, B6 and C. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2014.01.006] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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30
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31
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Palomar-Pardavé M, Corona-Avendaño S, Romero-Romo M, Alarcón-Angeles G, Merkoçi A, T. Ramírez-Silva M. Supramolecular interaction of dopamine with β-cyclodextrin: An experimental and theoretical electrochemical study. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2014.01.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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32
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Ramírez-Silva M, Corona-Avendaño S, Alarcón-Angeles G, Palomar-Pardavé M, Romero-Romo M, Rojas-Hernández A. Construction of Supramolecular Systems for the Selective and Quantitative Determination of Dopamine in the Presence of Ascorbic Acid. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.proche.2014.12.041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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33
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Nie T, Xu JK, Lu LM, Zhang KX, Bai L, Wen YP. Electroactive species-doped poly(3,4-ethylenedioxythiophene) films: Enhanced sensitivity for electrochemical simultaneous determination of vitamins B2, B6 and C. Biosens Bioelectron 2013; 50:244-50. [DOI: 10.1016/j.bios.2013.06.057] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Revised: 06/07/2013] [Accepted: 06/25/2013] [Indexed: 11/27/2022]
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34
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Antal IP, Bazel YR, Kormosh ZA. Electrochemical methods for determining group B vitamins. JOURNAL OF ANALYTICAL CHEMISTRY 2013. [DOI: 10.1134/s1061934813070034] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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35
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Walash M, Belal F, El-Enany N, El-Maghrabey M. SIMULTANEOUS DETERMINATION OF METOCLOPRAMIDE HYDROCHLORIDE AND PYRIDOXINE HYDROCHLORIDE IN SYRUP USING HPLC METHOD WITH FLUORESCENCE DETECTION: APPLICATION TO HUMAN PLASMA. J LIQ CHROMATOGR R T 2013. [DOI: 10.1080/10826076.2012.658590] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Mohamed Walash
- a Department of Analytical Chemistry, Faculty of Pharmacy , University of Mansoura , Mansoura , Egypt
| | - Fathalla Belal
- a Department of Analytical Chemistry, Faculty of Pharmacy , University of Mansoura , Mansoura , Egypt
| | - Nahed El-Enany
- a Department of Analytical Chemistry, Faculty of Pharmacy , University of Mansoura , Mansoura , Egypt
| | - Mahmoud El-Maghrabey
- a Department of Analytical Chemistry, Faculty of Pharmacy , University of Mansoura , Mansoura , Egypt
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36
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Razmi H, Mohammad-Rezaei R. Flow injection amperometric determination of pyridoxine at a Prussian blue nanoparticle-modified carbon ceramic electrode. Electrochim Acta 2010. [DOI: 10.1016/j.electacta.2009.10.072] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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37
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Bueno C, Pavez P, Salazar R, Encinas MV. Photophysics and photochemical studies of the vitamin B6 group and related derivatives. Photochem Photobiol 2009; 86:39-46. [PMID: 19930123 DOI: 10.1111/j.1751-1097.2009.00643.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The photophysics and photochemical properties of vitamin B6 constituents and analogs were studied as function of pH and solvent. The pK of the phenolic oxygen and the pyridine ring nitrogen depends on the electron donor-acceptor ability of the 4-substituent, and agrees with the calculated proton affinity. For all studied compounds, the fluorescence properties showed that the phenolic oxygen is 8 units more acidic in the lowest singlet excited state than in the ground state. The pyridine N-atom is slightly more basic in the excited state. At pH of biological significance, pH 6-8, pyridoxamine and 4-pyridoxic acid are the more efficient chromophores with higher fluorescence yield and longer lifetime. Spectroscopic studies showed that the tautomeric equilibrium depends on the nature of the 4-substituent. The quenching of the singlet excited state of pyridoxamine and 4-pyridoxic acid by amino acids, free or in a peptide, and DNA bases at pH 7 was studied by time-resolved fluorescence techniques. The quenching rate constants are well correlated with the redox properties of the pyridoxinic compound and amino acids, and are related to the free energy change in the electron transfer process. Guanosine and pyrimidine bases also are efficient quenchers, involving an electron transfer reaction.
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Affiliation(s)
- Claudia Bueno
- Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
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38
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Marszałł ML, Lebiedzińska A, Czarnowski W, Makarowski R, Kłos M, Szefer P. Application of the high-performance liquid chromatography method with coulometric detection for determination of vitamin B(6) in human plasma and serum. J Chromatogr B Analyt Technol Biomed Life Sci 2009; 877:3151-8. [PMID: 19733133 DOI: 10.1016/j.jchromb.2009.08.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2009] [Revised: 08/03/2009] [Accepted: 08/04/2009] [Indexed: 10/20/2022]
Abstract
A reversed-phase high-performance liquid chromatography method (HPLC) with coulometric electrochemical detection has been developed and validated for the simultaneous analysis of pyridoxamine-5'-phosphate (PMP), pyridoxamine (PM), pyridoxal 5'-phosphate (PLP), pyridoxal (PL), pyridoxine (PN) and 4-pyridoxic acid (4-PA) in human plasma and serum. The isocratic separation was achieved on C(18) column (250mmx4.6mm, I.D., 5microm) with a mobile phase consisted of 35mM sodium phosphate containing 2.5mM heptanesulfonic acid, adjusted to pH 3.2 with 85% orthophosphoric acid and 12% methanol (v/v). Within-run and between-run precisions expressed by the relative standard deviations were less than 2.7% and 7.7% for all the analysed vitamins and 4-PA, respectively. The limits of detection (LOD) and quantification (LOQ) were: 0.8 and 2.6nM, 1.1 and 3.8nM, 1.5 and 4.5nM, 1.3 and 4.2nM, 1.1 and 3.7nM, 2.1 and 6.3nM for PMP, PM, PLP, PL, PN and 4-PA, respectively. The recoveries ranged from 90.4% to 98.4%. Stability of vitamins was checked under a variety of storage conditions. The developed application demonstrated acceptable sensitivity, precision, accuracy, stability, and linearity over the physiological concentration range. The major advantage of the proposed method is its great simplicity.
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Affiliation(s)
- Marcin L Marszałł
- Department of Toxicology, Medical University of Gdańsk, Al. Gen. J. Hallera 107, Gdańsk 80-416, Poland.
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39
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Issac S, Girish Kumar K. Voltammetric determination of sulfamethoxazole at a multiwalled carbon nanotube modified glassy carbon sensor and its application studies. Drug Test Anal 2009; 1:350-4. [DOI: 10.1002/dta.69] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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40
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Liu SQ, Cao ML, Dong SL. Electrochemical and Ultraviolet–visible spectroscopic studies on the interaction of deoxyribonucleic acid with vitamin B6. Bioelectrochemistry 2008; 74:164-9. [DOI: 10.1016/j.bioelechem.2008.07.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2007] [Revised: 07/16/2008] [Accepted: 07/17/2008] [Indexed: 11/16/2022]
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41
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Vaze V, Srivastava A. Determination of pyridoxine hydrochloride in pharmaceutical preparations by calixarene based potentiometric sensor. J Pharm Biomed Anal 2008; 47:177-82. [DOI: 10.1016/j.jpba.2007.12.030] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2007] [Revised: 12/03/2007] [Accepted: 12/04/2007] [Indexed: 10/22/2022]
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42
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Voltammetric Investigation of Vitamin B_6 at a Glassy Carbon Electrode and Its Application in Determination. B KOREAN CHEM SOC 2008. [DOI: 10.5012/bkcs.2008.29.1.038] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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43
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Electrochemical behaviour of pyridoxine hydrochloride (vitamin B6) at carbon paste electrode modified with crown ethers. J Solid State Electrochem 2007. [DOI: 10.1007/s10008-007-0435-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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44
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Reversed-phase high-performance liquid chromatography method with coulometric electrochemical and ultraviolet detection for the quantification of vitamins B1 (thiamine), B6 (pyridoxamine, pyridoxal and pyridoxine) and B12 in animal and plant foods. J Chromatogr A 2007; 1173:71-80. [DOI: 10.1016/j.chroma.2007.09.072] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2006] [Revised: 09/20/2007] [Accepted: 09/27/2007] [Indexed: 11/23/2022]
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45
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46
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Kang S, Cui Z, Mu J. Electrochemical Behavior of K3[Fe(CN)6] on the Electrode Coated with Modified Multi‐Walled Carbon Nanotubes. J DISPER SCI TECHNOL 2007. [DOI: 10.1080/01932690701277682] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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47
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Crevillén AG, Blasco AJ, González MC, Escarpa A. A fast and reliable route integrating calibration and analysis protocols for water-soluble vitamin determination on microchip-electrochemistry platforms. Electrophoresis 2006; 27:5110-8. [PMID: 17161002 DOI: 10.1002/elps.200600213] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A novel analytical route to determine water-soluble vitamins (B group and C) using single channel microchip-electrochemistry platforms is presented. The electrochemical detection protocol was carefully optimized, and it was shown that it was crucial to use 1 M nitric acid in the detector compartment to detect folic acid. A phosphate buffer (pH 6, 10 mM) and a separation voltage of 2 kV gave the complete separation of vitamins in less than 130 s, with good reproducibility (RSDs less than 10%) and accuracy (error less than 9%). In addition, a methodological innovation integrating calibration and analysis of water-soluble vitamins on the chip is also proposed. The strategy consisted in sequentially using both reservoirs (named calibration and analysis reservoirs) as well as a calibration factor (defined as signal/concentration of analyte). The analytical route required 350 s in the overall protocol (employing 130 s in calibration plus 130 s in analysis), an improvement over the times used in both conventional and microchip protocols.
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48
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Tian XJ, Song JF, Luan XJ, Wang YY, Shi QZ. Determination of metformin based on amplification of its voltammetric response by a combination of molecular wire and carbon nanotubes. Anal Bioanal Chem 2006; 386:2081-6. [PMID: 17089101 DOI: 10.1007/s00216-006-0869-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2006] [Revised: 09/08/2006] [Accepted: 09/19/2006] [Indexed: 10/24/2022]
Abstract
Molecular wires containing copper(II) (CuMW), in the form of the coordination polymer (Cu(II)4(bpp)4(maa)8(H2O)2).2H2O (bpp=1,3-bis(4-pyridyl)propane, maa=2-methylacrylic acid), and multiwalled carbon nanotubes (CNT) have been combined to prepare a paste electrode (CuMW/CNT/PE). The voltammetric response of the CuMW/CNT/PE to metformin (MET) was significantly greater than that of electrodes prepared from other materials, because of both the surface effect of CuMW and CNT and coordination of MET with the Cu(II) ion in the CuMW. A novel voltammetric method for determination of MET is proposed. In pH 7.2 Britton-Robinson buffer, using single sweep voltammetry, the second-order derivative peak current for oxidation of MET at 0.97 V (relative to SCE) increased linearly with MET concentration in the range 9.0 x 10(-7)-5.0 x 10(-5) mol L(-1) and the detection limit was 6.5 x 10(-7) mol L(-1).
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Affiliation(s)
- Xin-juan Tian
- Institute of Analytical Science, Northwest University, Xi'an 710069, People's Republic of China
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49
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Marszałł ML, Lebiedzińska A, Czarnowski W, Szefer P. High-performance liquid chromatography method for the simultaneous determination of thiamine hydrochloride, pyridoxine hydrochloride and cyanocobalamin in pharmaceutical formulations using coulometric electrochemical and ultraviolet detection. J Chromatogr A 2005; 1094:91-8. [PMID: 16257294 DOI: 10.1016/j.chroma.2005.07.091] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2005] [Revised: 07/18/2005] [Accepted: 07/25/2005] [Indexed: 11/23/2022]
Abstract
The method for the simultaneous determination of thiamine hydrochloride, pyridoxine hydrochloride and cyanocobalamin by high-performance liquid chromatography (HPLC) with coulometric electrochemical and UV detections is presented. The retention time of vitamins was repeatedly determined by isocratic elution using 0.05 M phosphate buffer-10% methanol and 0.018 M trimethylamine (1 ml min(-1), pH 3.55) as mobile phase with the Supelco LC 18 column 5 microm (25 cm x 4.6 mm). The specificity of the method was demonstrated by the retention characteristics, coulometric electrochemical and UV detection. The limits of detection of thiamine, pyridoxine and cyanocobalamin were: 9.2, 2.7 and 0.08 ng/ml, respectively. The method was characterized also by wide concentration range, high sensitivity and good accuracy (99.6-102.7%). The repeatability of the method was evaluated at different level of concentration of vitamins and the relative standard deviation was below 4.5%. The method was successfully applied for the quantification of Vitamins B1, B6 and B12 in pharmaceutical preparations and dietary supplements.
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Affiliation(s)
- Marcin Leszek Marszałł
- Department of Toxicology, Medical University of Gdańsk, Al. Gen. J. Hallera 107, Gdańsk 80-416, Poland
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