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Non-invasive electrochemical immunosensor for reverse iontophoretic determination of cardiac troponins (cTnT & cTnI) in a simulated artificial skin model. Significance of raw DPV and CV data for chemometric discrimination. Talanta 2023; 256:124276. [PMID: 36731212 DOI: 10.1016/j.talanta.2023.124276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 11/15/2022] [Accepted: 01/14/2023] [Indexed: 01/22/2023]
Abstract
Electrochemical immunosensors coupled with reverse iontophoresis (RI) for noninvasive determination of cardiac troponins were developed and validated according to ICH Q2 (R1) guideline. Linearity was in 0.01-10 and 100-500 ng/mL ranges. LODs (ng/mL) were in 6-25 × 10-4, while LOQs (μg/mL) were in 18-7.5 × 10-4 range. Chemometric evaluation was performed on raw data simply by principle component analysis and cluster analysis to discriminate stages of immunosensors. This is the first demonstration of RI determination of cardiac troponins so far. Findings of the current manuscript have great potential to develop point of care diagnostic systems for major cardiac events, where high sensitivity and specificity are required.
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Hydrothermally reduced graphene oxide as a sensing material for electrically transduced pH sensors. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115530] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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3
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A simple, fast, and cost-effective analytical method for monitoring active quinones in a H2O2 production process. Microchem J 2021. [DOI: 10.1016/j.microc.2020.105861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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4
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Ciucu AA, Buleandră M, Ciurea T, Stoica VN, Ştefanescu CD, Ciobanu A. A New Voltammetric Approach for Electrochemical Determination of Lamotrigine in Pharmaceutical Samples. ELECTROANAL 2021. [DOI: 10.1002/elan.202100037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Anton A. Ciucu
- University of Bucharest Faculty of Chemistry Department of Analytical Chemistry 90-92 Panduri Av. 050663 Bucharest Romania
| | - Mihaela Buleandră
- University of Bucharest Faculty of Chemistry Department of Analytical Chemistry 90-92 Panduri Av. 050663 Bucharest Romania
| | - Tatiana Ciurea
- Bagdasar-Arseni Emergency Clinical Hospital Functional Neurosurgery Department EEG Epilepsy Research Section) Berceni Av. 041915 Bucharest Romania
| | - Vlad N. Stoica
- University of Bucharest Faculty of Chemistry Department of Analytical Chemistry 90-92 Panduri Av. 050663 Bucharest Romania
| | - Cristian D. Ştefanescu
- National Institute of Aeronautical and Aerospace Medicine Gen. Dr. Victor Anastasiu 88 Mircea Vulcanescu Str. Bucharest Romania
| | - Adela Ciobanu
- University of Medicine and Pharmacy Carol Davila Department of Psychiatry Bucharest Romania
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5
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Han D, Goudeau B, Jiang D, Fang D, Sojic N. Electrochemiluminescence Microscopy of Cells: Essential Role of Surface Regeneration. Anal Chem 2020; 93:1652-1657. [DOI: 10.1021/acs.analchem.0c05123] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Dongni Han
- Univ. Bordeaux, Bordeaux INP, CNRS, UMR 5255, Site ENSCBP, 33607 Pessac, France
- School of Pharmacy and Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University, Nanjing, Jiangsu 211126, China
| | - Bertrand Goudeau
- Univ. Bordeaux, Bordeaux INP, CNRS, UMR 5255, Site ENSCBP, 33607 Pessac, France
| | - Dechen Jiang
- State Key Laboratory of Analytical Chemistry for Life and School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Danjun Fang
- School of Pharmacy and Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University, Nanjing, Jiangsu 211126, China
| | - Neso Sojic
- Univ. Bordeaux, Bordeaux INP, CNRS, UMR 5255, Site ENSCBP, 33607 Pessac, France
- Department of Chemistry, South Ural State University, Chelyabinsk 454080, Russian Federation
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Lourencao BC, Brocenschi RF, Medeiros RA, Fatibello‐Filho O, Rocha‐Filho RC. Analytical Applications of Electrochemically Pretreated Boron‐Doped Diamond Electrodes. ChemElectroChem 2020. [DOI: 10.1002/celc.202000050] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Bruna C. Lourencao
- Departamento de Química Universidade Federal de São Carlos (UFSCar) C.P. 676 13560-970 São Carlos – SP Brazil
| | - Ricardo F. Brocenschi
- Centro de Estudos do Mar Universidade Federal do Paraná (UFPR) C.P. 61 83255-976 Pontal do Paraná – PR Brazil
| | - Roberta A. Medeiros
- Departamento de Química Universidade Estadual de Londrina (UEL) C.P. 10.011 86057-970 Londrina – PR Brazil
| | - Orlando Fatibello‐Filho
- Departamento de Química Universidade Federal de São Carlos (UFSCar) C.P. 676 13560-970 São Carlos – SP Brazil
| | - Romeu C. Rocha‐Filho
- Departamento de Química Universidade Federal de São Carlos (UFSCar) C.P. 676 13560-970 São Carlos – SP Brazil
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Adsorptive square wave voltammetric determination of amitraz in Argentine honeys with a microwave-assisted sample treatment. Microchem J 2019. [DOI: 10.1016/j.microc.2019.104068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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8
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Simple self-referenced ratiometric electrochemical sensor for dopamine detection using electrochemically pretreated glassy carbon electrode modified by acid-treated multiwalled carbon nanotube. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.113446] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Graphitic Carbon Electrodes on Flexible Substrate for Neural Applications Entirely Fabricated Using Infrared Nanosecond Laser Technology. Sci Rep 2018; 8:14749. [PMID: 30283015 PMCID: PMC6170440 DOI: 10.1038/s41598-018-33083-w] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 09/20/2018] [Indexed: 11/08/2022] Open
Abstract
Neural interfaces for neuroscientific research are nowadays mainly manufactured using standard microsystems engineering technologies which are incompatible with the integration of carbon as electrode material. In this work, we investigate a new method to fabricate graphitic carbon electrode arrays on flexible substrates. The devices were manufactured using infrared nanosecond laser technology for both patterning all components and carbonizing the electrode sites. Two laser pulse repetition frequencies were used for carbonization with the aim of finding the optimum. Prototypes of the devices were evaluated in vitro in 30 mM hydrogen peroxide to mimic the post-surgery oxidative environment. The electrodes were subjected to 10 million biphasic pulses (39.5 μC/cm2) to measure their stability under electrical stress. Their biosensing capabilities were evaluated in different concentrations of dopamine in phosphate buffered saline solution. Raman spectroscopy and x-ray photoelectron spectroscopy analysis show that the atomic percentage of graphitic carbon in the manufactured electrodes reaches the remarkable value of 75%. Results prove that the infrared nanosecond laser yields activated graphite electrodes that are conductive, non-cytotoxic and electrochemically inert. Their comprehensive assessment indicates that our laser-induced carbon electrodes are suitable for future transfer into in vivo studies, including neural recordings, stimulation and neurotransmitters detection.
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Pierini GD, Robledo SN, Zon MA, Di Nezio MS, Granero AM, Fernández H. Development of an electroanalytical method to control quality in fish samples based on an edge plane pyrolytic graphite electrode. Simultaneous determination of hypoxanthine, xanthine and uric acid. Microchem J 2018. [DOI: 10.1016/j.microc.2017.12.025] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Vomero M, Castagnola E, Ordonez JS, Carli S, Zucchini E, Maggiolini E, Gueli C, Goshi N, Ciarpella F, Cea C, Fadiga L, Ricci D, Kassegne S, Stieglitz T. Incorporation of Silicon Carbide and Diamond‐Like Carbon as Adhesion Promoters Improves In Vitro and In Vivo Stability of Thin‐Film Glassy Carbon Electrocorticography Arrays. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/adbi.201700081] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Maria Vomero
- Institute of Microsystem Technology (IMTEK) Laboratory for Biomedical Microtechnology Georges‐Koehler‐Allee 102 D‐79110 Freiburg Germany
- Cluster of Excellence BrainLinks‐BrainTools Georges‐Koehler‐Allee 80 79110 Freiburg Germany
| | - Elisa Castagnola
- MEMS Research Laboratory Department of Mechanical Engineering College of Engineering San Diego State University 5500 Campanile Drive San Diego CA 92182‐1323 USA
- Center for Sensorimotor Neural Engineering (CSNE) Box 37, 1414 NE 42nd St., Suite 204 Seattle WA 98105–6271 USA
| | - Juan S. Ordonez
- Institute of Microsystem Technology (IMTEK) Laboratory for Biomedical Microtechnology Georges‐Koehler‐Allee 102 D‐79110 Freiburg Germany
| | - Stefano Carli
- Center for Translational Neurophysiology of Speech and Communication Istituto Italiano di Tecnologia Via Fossato di Mortara 17/19 44121 Ferrara Italy
| | - Elena Zucchini
- Center for Translational Neurophysiology of Speech and Communication Istituto Italiano di Tecnologia Via Fossato di Mortara 17/19 44121 Ferrara Italy
| | - Emma Maggiolini
- Center for Translational Neurophysiology of Speech and Communication Istituto Italiano di Tecnologia Via Fossato di Mortara 17/19 44121 Ferrara Italy
| | - Calogero Gueli
- Institute of Microsystem Technology (IMTEK) Laboratory for Biomedical Microtechnology Georges‐Koehler‐Allee 102 D‐79110 Freiburg Germany
| | - Noah Goshi
- MEMS Research Laboratory Department of Mechanical Engineering College of Engineering San Diego State University 5500 Campanile Drive San Diego CA 92182‐1323 USA
- Center for Sensorimotor Neural Engineering (CSNE) Box 37, 1414 NE 42nd St., Suite 204 Seattle WA 98105–6271 USA
| | - Francesca Ciarpella
- Center for Translational Neurophysiology of Speech and Communication Istituto Italiano di Tecnologia Via Fossato di Mortara 17/19 44121 Ferrara Italy
| | - Claudia Cea
- MEMS Research Laboratory Department of Mechanical Engineering College of Engineering San Diego State University 5500 Campanile Drive San Diego CA 92182‐1323 USA
- Center for Sensorimotor Neural Engineering (CSNE) Box 37, 1414 NE 42nd St., Suite 204 Seattle WA 98105–6271 USA
| | - Luciano Fadiga
- Center for Translational Neurophysiology of Speech and Communication Istituto Italiano di Tecnologia Via Fossato di Mortara 17/19 44121 Ferrara Italy
- Section of Human Physiology University of Ferrara Via Fossato di Mortara 17/19 44121 Ferrara Italy
| | - Davide Ricci
- Center for Translational Neurophysiology of Speech and Communication Istituto Italiano di Tecnologia Via Fossato di Mortara 17/19 44121 Ferrara Italy
| | - Sam Kassegne
- MEMS Research Laboratory Department of Mechanical Engineering College of Engineering San Diego State University 5500 Campanile Drive San Diego CA 92182‐1323 USA
- Center for Sensorimotor Neural Engineering (CSNE) Box 37, 1414 NE 42nd St., Suite 204 Seattle WA 98105–6271 USA
| | - Thomas Stieglitz
- Institute of Microsystem Technology (IMTEK) Laboratory for Biomedical Microtechnology Georges‐Koehler‐Allee 102 D‐79110 Freiburg Germany
- Cluster of Excellence BrainLinks‐BrainTools Georges‐Koehler‐Allee 80 79110 Freiburg Germany
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Zhang G, Wen M, Wang S, Chen J, Wang J. Insights into electrochemical behavior and anodic oxidation processing of graphite matrix in aqueous solutions of sodium nitrate. J APPL ELECTROCHEM 2016. [DOI: 10.1007/s10800-016-0999-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Zhang Y, Kim DY. Electrochemical Treatment of Glassy Carbon for Label-Free Detection of DNA Bases and Neurotransmitters. ELECTROANAL 2015. [DOI: 10.1002/elan.201500228] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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14
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Jia D, Gao J, Wang L, Gao Y, Ye B. Electrochemical behavior of the insecticide pymetrozine at an electrochemically pretreated glassy carbon electrode and its analytical application. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2015; 7:9100-9107. [PMID: 39044378 DOI: 10.1039/c5ay01987g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/25/2024]
Abstract
A simple and sensitive electrochemical method for the determination of the insecticide pymetrozine was proposed using a simple electrochemically pretreated glassy carbon electrode (EPGCE). Compared with the bare GCE, the electrochemical response signal of pymetrozine at the EPGCE showed a significant increase. The electrochemical behavior of pymetrozine was investigated systematically and some dynamics were investigated in detail for the first time. The results indicate that the reaction of pymetrozine on the EPGCE is a two electron and two proton process, which is controlled by both diffusion and adsorption. Under optimum conditions, a good linear relationship was obtained between peak currents and pymetrozine concentrations in the range of 1 × 10-7 to 5 × 10-6 mol L-1 with a detection limit of 8 × 10-8 mol L-1 (S/N = 3). The proposed method was applied to the determination of pymetrozine in real samples with satisfactory recovery results. Finally, the degradation of pymetrozine was also studied in natural soil.
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Affiliation(s)
- Donglin Jia
- College of Chemistry and Molecular Engineering, School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, PR China.
| | - Jian Gao
- College of Chemistry and Molecular Engineering, School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, PR China.
| | - Lu Wang
- College of Chemistry and Molecular Engineering, School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, PR China.
| | - Yudong Gao
- College of Chemistry and Molecular Engineering, School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, PR China.
| | - Baoxian Ye
- College of Chemistry and Molecular Engineering, School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, PR China.
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15
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Rabinca AA, Buleandra M, Balan A, Stamatin I, Ciucu AA. Electrochemical Behaviour and Rapid Determination of L-Dopa at Electrochemically Pretreated Screen Printed Carbon Electrode. ELECTROANAL 2015. [DOI: 10.1002/elan.201500230] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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16
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Lee S, Piao Y. Voltammetric Determination of Clenbuterol on Electrochemically Activated Glassy Carbon Electrode. JOURNAL OF THE KOREAN ELECTROCHEMICAL SOCIETY 2014. [DOI: 10.5229/jkes.2014.17.4.216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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17
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Substrate selection for fundamental studies of electrocatalysts and photoelectrodes: inert potential windows in acidic, neutral, and basic electrolyte. PLoS One 2014; 9:e107942. [PMID: 25357131 PMCID: PMC4214636 DOI: 10.1371/journal.pone.0107942] [Citation(s) in RCA: 108] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Accepted: 08/17/2014] [Indexed: 11/26/2022] Open
Abstract
The selection of an appropriate substrate is an important initial step for many studies of electrochemically active materials. In order to help researchers with the substrate selection process, we employ a consistent experimental methodology to evaluate the electrochemical reactivity and stability of seven potential substrate materials for electrocatalyst and photoelectrode evaluation. Using cyclic voltammetry with a progressively increased scan range, we characterize three transparent conducting oxides (indium tin oxide, fluorine-doped tin oxide, and aluminum-doped zinc oxide) and four opaque conductors (gold, stainless steel 304, glassy carbon, and highly oriented pyrolytic graphite) in three different electrolytes (sulfuric acid, sodium acetate, and sodium hydroxide). We determine the inert potential window for each substrate/electrolyte combination and make recommendations about which materials may be most suitable for application under different experimental conditions. Furthermore, the testing methodology provides a framework for other researchers to evaluate and report the baseline activity of other substrates of interest to the broader community.
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18
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Permselectivity and preconcentration properties of taurine/graphite oxide electrode coatings: Analytical perspectives. Electrochem commun 2014. [DOI: 10.1016/j.elecom.2014.03.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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19
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Doepke A, Han C, Back T, Cho W, Dionysiou DD, Shanov V, Halsall HB, Heineman WR. Analysis of the Electrochemical Oxidation of Multiwalled Carbon Nanotube Tower Electrodes in Sodium Hydroxide. ELECTROANAL 2012. [DOI: 10.1002/elan.201200105] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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20
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Niland MJ, Fogel R, Flanagan SP, Limson JL. Towards Normalising Variability in Current Responses at Glassy Carbon Electrodes Using Double Layer Capacitance; a Case Study of Citrinin. ELECTROANAL 2012. [DOI: 10.1002/elan.201100645] [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]
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21
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Andreoli E, Annibaldi V, Rooney DA, Liao KS, Alley NJ, Curran SA, Breslin CB. Electrochemical Conversion of Copper-Based Hierarchical Micro/Nanostructures to Copper Metal Nanoparticles and Their Testing in Nitrate Sensing. ELECTROANAL 2011. [DOI: 10.1002/elan.201100105] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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22
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Wu AH, Sun JJ, Su XL, Lin YW, Lin ZB, Yang HH, Chen GN. Cathodic electrochemiluminescence at C/CxO1−x electrodes for the fabrication of label-free biosensors. Analyst 2010; 135:2309-15. [DOI: 10.1039/b924403d] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Kamel AH, Moreira FTC, Delerue-Matos C, Sales MGF. Electrochemical determination of antioxidant capacities in flavored waters by guanine and adenine biosensors. Biosens Bioelectron 2008; 24:591-9. [PMID: 18640022 DOI: 10.1016/j.bios.2008.06.007] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2008] [Revised: 05/03/2008] [Accepted: 06/04/2008] [Indexed: 11/17/2022]
Abstract
The immobilization and electro-oxidation of guanine and adenine as DNA bases on glassy carbon electrode are evaluated by square wave voltammetric analysis. The influence of electrochemical pretreatments, nature of supporting electrolyte, pH, accumulation time and composition of DNA nucleotides on the immobilization effect and the electrochemical mechanism are discussed. Trace levels of either guanine or adenine can be readily detected following short accumulation time with detection limits of 35 and 40 ngmL(-1) for guanine and adenine, respectively. The biosensors of guanine and adenine were employed for the voltammetric detection of antioxidant capacity in flavored water samples. The method relies on monitoring the changes of the intrinsic anodic response of the surface-confined guanine and adenine species, resulting from its interaction with free radicals from Fenton-type reaction in absence and presence of antioxidant. Ascorbic acid was used as standard to evaluate antioxidant capacities of samples. Analytical data was compared with that of FRAP method.
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Affiliation(s)
- Ayman H Kamel
- REQUIMTE, Instituto Superior de Engenharia do Porto, R. Dr. António Bernardino de Almeida, 431, 4200-072 Porto, Portugal
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Simultaneous voltammetric detection of ascorbic acid, dopamine and uric acid using a pyrolytic graphite electrode modified into dopamine solution. Anal Chim Acta 2008; 612:89-98. [DOI: 10.1016/j.aca.2008.02.017] [Citation(s) in RCA: 122] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2007] [Revised: 02/04/2008] [Accepted: 02/08/2008] [Indexed: 11/19/2022]
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Hrbác J, Gregor C, Machová M, Králová J, Bystron T, Cíz M, Lojek A. Nitric oxide sensor based on carbon fiber covered with nickel porphyrin layer deposited using optimized electropolymerization procedure. Bioelectrochemistry 2007; 71:46-53. [PMID: 17084679 DOI: 10.1016/j.bioelechem.2006.09.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2006] [Revised: 09/11/2006] [Accepted: 09/17/2006] [Indexed: 11/18/2022]
Abstract
Electropolymerization regime of meso-tetrakis(3-methoxy-4-hydroxyphenyl) porphyrin is optimized to yield films possessing both electrocatalytical and permselective properties towards nitric oxide oxidation. The sensor composed of electrochemically oxidized carbon fiber, covered solely with nickel porphyrin derivative layer electropolymerized using our method, is characterized by high selectivity towards nitrite (1:600), ascorbate (1:8000) and dopamine (>1:80), determined by constant potential amperometry at 830 mV (vs. Ag/AgCl). Selectivity for ascorbate and dopamine as well as detection limit for NO (1.5 nM at S/N=3) is 5-10 times better than parameters usually reported for Nafion coated porphyrinic sensors. Nafion coating can further enhance selectivity properties as well as aids to the stability of the sensors' responses.
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Affiliation(s)
- Jan Hrbác
- Department of Physical Chemistry, Palacký University, Faculty of Science, tr. Svobody 26, 771 46 Olomouc, Czech Republic.
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Yao H, Sun Y, Lin X, Tang Y, Huang L. Electrochemical characterization of poly(eriochrome black T) modified glassy carbon electrode and its application to simultaneous determination of dopamine, ascorbic acid and uric acid. Electrochim Acta 2007. [DOI: 10.1016/j.electacta.2007.04.013] [Citation(s) in RCA: 176] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Luo X, Killard AJ, Smyth MR. Nanocomposite and Nanoporous Polyaniline Conducting Polymers Exhibit Enhanced Catalysis of Nitrite Reduction. Chemistry 2007; 13:2138-43. [PMID: 17124713 DOI: 10.1002/chem.200601248] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Nanostructured polyaniline (PANI) conducting polymer films were prepared on electrochemically pretreated glassy carbon electrodes, which were previously modified with multilayers of polystyrene (PS) nanoparticles with a diameter of 100 nm. PANI was electropolymerised and grown through the interstitial spaces between the PS nanoparticles, which formed a nanocomposite film of PANI and PS nanoparticles on the electrode surface. Furthermore, a nanoporous PANI film was fabricated through the removal of the PS nanoparticles by dissolution in toluene. As a result of their nanostructure, both of the PANI films (before and after removal of the PS nanoparticles) exhibited enhanced electrocatalytic behaviour towards the reduction of nitrite relative to bulk-PANI films; however, partial collapse or shrinkage may have occurred with the removal of the nanoparticles and could have resulted in a less enhanced response. Under optimised conditions, the nanocomposite-film-modified electrode exhibited a fast response time of 5 s and a linear range from 5.0 x 10(-7) to 1.4 x 10(-3) M for the detection of nitrite; the detection limit was 2.4 x 10(-7) M at a signal-to-noise ratio of 3.
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Affiliation(s)
- Xiliang Luo
- National Centre for Sensor Research, Dublin City University, Dublin 9, Ireland
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30
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Gu HY, Yu AM, Chen HY. ELECTROCHEMICAL BEHAVIOR AND SIMULTANEOUS DETERMINATION OF VITAMIN B2, B6, AND C AT ELECTROCHEMICALLY PRETREATED GLASSY CARBON ELECTRODE. ANAL LETT 2007. [DOI: 10.1081/al-100107301] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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31
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Miserendino S, Yoo J, Cassell A, Tai YC. Electrochemical characterization of parylene-embedded carbon nanotube nanoelectrode arrays. NANOTECHNOLOGY 2006; 17:S23-S28. [PMID: 21727350 DOI: 10.1088/0957-4484/17/4/005] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A novel parylene-embedded carbon nanotube nanoelectrode array is presented for use as an electrochemical detector working electrode material. The fabrication process is compatible with standard microfluidic and other MEMS processing without requiring chemical mechanical polishing. Electrochemical studies of the nanoelectrodes showed that they perform comparably to platinum. Electrochemical pretreatment for short periods of time was found to further improve performance as measured by cathodic and anodic peak separation of K(3)Fe(CN)(6). A lower detection limit below 0.1 µM was measured and with further fabrication improvements detection limits between 100 pM and 10 nM are possible. This makes the nanoelectrode arrays particularly suitable for trace electrochemical analysis.
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Affiliation(s)
- Scott Miserendino
- California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USA
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Alfonsi-Hourdin S, Longchamp S, Gallet O, Nigretto JM. Electrochemical processing of fibrinogen modified-graphite surfaces: Effect on plasmin generation from adsorbed plasminogen. Biomaterials 2006; 27:52-60. [PMID: 16029886 DOI: 10.1016/j.biomaterials.2005.05.092] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2005] [Accepted: 05/27/2005] [Indexed: 11/26/2022]
Abstract
With the aim to improve the fibrinolytic properties of carbons by different biological and electrochemical treatments, we modified graphite surfaces by fibrinogen adsorption and subsequent application of various constant potentials before submitting them to plasminogen adsorption. First, we verified that plasminogen (purified or present in human plasma) could adsorb onto these modified surfaces and that adsorbed plasminogen could be converted by t-PA (the principal physiological activator of plasminogen) to adsorbed plasmin. The catalytic properties of the generated enzyme were characterized in assay solutions containing t-PA, fibrinogen and the chromogenic substrate S-2403 (pyroGlu-Phe-Lys-p-nitroaniline, HCl). Experiments showed that the application of electrical potentials to the fibrinogen coating could indirectly affect the properties of the material. In the case of anodic potentials, the amidolytic activity of the generated plasmin was significantly enhanced. Especially, this activity was 10 times higher at a particular potential value.
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Quijada C, Vázquez J. Electrochemical reactivity of aqueous SO2 on glassy carbon electrodes in acidic media. Electrochim Acta 2005. [DOI: 10.1016/j.electacta.2005.03.027] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Li N, Guo L, Jiang J, Yang X. Interaction of echinomycin with guanine: electrochemistry and spectroscopy studies. Biophys Chem 2004; 111:259-65. [PMID: 15501569 DOI: 10.1016/j.bpc.2004.06.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2004] [Revised: 06/10/2004] [Accepted: 06/16/2004] [Indexed: 11/22/2022]
Abstract
The interaction of antitumor antibiotic, echinomycin (Echi) with guanine (Gua) was thoroughly investigated by adsorptive transfer stripping cyclic voltammetry, ultraviolet and visible adsorption spectra (UV/Vis) and Fourier-transform infrared spectroscopy (FTIR). Electrochemistry provided a simple tool for verifying the occurrence of interaction between Echi and Gua. Echi could be accumulated from the solution and give well-defined electrochemical signals in 0.1 M phosphate buffer solution (pH 7.0) only when Gua was present on the surface of the electrochemically pretreated glass carbon electrode (GCE), suggesting a strong binding of Echi to Gua. All the acquired spectral data showed that a new adduct between Echi and Gua was formed, and two pairs of adjacent intermolecular hydrogen bonds between the Ala backbone atoms in Echi and Gua (Ala-NH to Gua-N3 and Gua-NH2 to Ala-CO) played a dominating role in the interaction. Electrochemistry coupled with spectroscopy techniques could provide a relatively easy way to obtain useful insights into the molecular mechanism of drug-DNA interactions, which should be important in the development of new anticancer drugs with specific base recognition.
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Affiliation(s)
- Nan Li
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
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Pezzatini G, Midili I, Toti G, Loglio F, Innocenti M. Determination of chlorite in drinking water by differential pulse voltammetry on graphite. Anal Bioanal Chem 2004; 380:650-7. [PMID: 15322790 DOI: 10.1007/s00216-004-2732-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2004] [Revised: 06/14/2004] [Accepted: 06/16/2004] [Indexed: 10/26/2022]
Abstract
The chlorite ion is an unavoidable by-product of the disinfection of drinking water by means of chlorine dioxide. The maximum concentration values of chlorite accepted in many countries' regulations range from 0.2 to 1.0 mg L(-1). A simple, inexpensive and quickly set up voltammetric procedure for the on-site determination of chlorite in drinking water networks is described. This procedure is suitable for the whole range of applications in drinking water plants. A useful cell for on-field analysis has been developed. Surface morphology and behaviour of carbon-based working electrodes have been investigated by voltammetry and atomic force microscopy (AFM). Actual samples of different types of water networks have been analysed for chlorite concentration.
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Affiliation(s)
- Giovanni Pezzatini
- Dipartimento di Chimica, Università di Firenze, Via della Lastruccia 3, 50019, Sesto Fiorentino (FI), Italy.
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Allen BW, Piantadosi CA. Electrochemical activation of electrodes for amperometric detection of nitric oxide. Nitric Oxide 2003; 8:243-52. [PMID: 12895434 DOI: 10.1016/s1089-8603(03)00029-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
An open question in the literature of nitric oxide detection was investigated: does electrochemical activation account for the enhanced properties of certain presumed chemically-modified electrodes? Uniform electrodes of graphite, iridium, palladium, platinum, and ruthenium were exposed to potential cycling and then tested for amperometric response to nitric oxide to identify principles that govern electrochemical activation of nitric oxide electrodes. These electrodes were compared to similar electrodes that were not cycled. Only cycled graphite and ruthenium showed significantly increased responses. Graphite demonstrated enhanced performance after exposure to cycling potentials at which oxygen, CO(2), and soluble carbonates form, suggesting that erosion of the electrode enhanced its response by increasing the surface area accessible to nitric oxide. This may explain the performance of carbon fibers cycled to the same potentials in solutions containing metalloporphyrins. The response of ruthenium was enhanced after cycling to less extreme potentials at which soluble species do not form and at which a metallic conductive oxide, RuO(2), could lay down a stable, adherent layer on the electrode surface. Cycled ruthenium also exhibited a much greater increase in capacitance after cycling, consistent with the formation of a conductive surface layer.
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Affiliation(s)
- Barry W Allen
- Department of Anesthesiology, Duke University Medical Center, Box 3823, Durham, NC 27710, USA.
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Kiema GK, Aktay M, McDermott MT. Preparation of reproducible glassy carbon electrodes by removal of polishing impurities. J Electroanal Chem (Lausanne) 2003. [DOI: 10.1016/s0022-0728(02)01264-0] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Wang HS, Ju HX, Chen HY. Simultaneous determination of guanine and adenine in DNA using an electrochemically pretreated glassy carbon electrode. Anal Chim Acta 2002. [DOI: 10.1016/s0003-2670(02)00297-0] [Citation(s) in RCA: 136] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Brett CMA, Angnes L, Liess HD. Carbon Film Resistors as Electrodes: Voltammetric Properties and Application in Electroanalysis. ELECTROANAL 2001. [DOI: 10.1002/1521-4109(200105)13:8/9<765::aid-elan765>3.0.co;2-3] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Lin XQ, Chen J, Chen ZH. Amperometric Biosensor for Hydrogen Peroxide Based on Immobilization of Horseradish Peroxidase on Methylene Blue Modified Graphite Electrode. ELECTROANAL 2000. [DOI: 10.1002/(sici)1521-4109(20000301)12:4<306::aid-elan306>3.0.co;2-j] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Strein TG, Ximba BJ, Hamad AH. Steady-State Voltammetry of Catechol and Guaiacol Analogues at Carbon Fiber Microdisk Electrodes Following Laser and Electrochemical Activation Procedures. ELECTROANAL 1999. [DOI: 10.1002/(sici)1521-4109(199901)11:1<37::aid-elan37>3.0.co;2-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Dai HP, Shiu KK. Voltammetric behavior of alizarin red S adsorbed on electrochemically pretreated glassy carbon electrodes. Electrochim Acta 1998. [DOI: 10.1016/s0013-4686(97)10185-2] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Shiu KK, Song FY. Preconcentration and Electroanalysis of Copper Species at Electrochemically Activated Glassy Carbon Electrodes Adsorbed with Alizarin Red S. ELECTROANAL 1998. [DOI: 10.1002/(sici)1521-4109(199804)10:4<256::aid-elan256>3.0.co;2-k] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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49
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Labar C, Lamberts L. Anodic stripping voltammetry with carbon paste electrodes for rapid Ag(I) and Cu(II) determinations. Talanta 1997; 44:733-42. [DOI: 10.1016/s0039-9140(96)02053-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/1995] [Revised: 07/16/1996] [Accepted: 07/23/1996] [Indexed: 11/28/2022]
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Voltammetric detection of NO in the rat brain with an electronic conducting polymer and Nafion® bilayer-coated carbon fibre electrode. J Electroanal Chem (Lausanne) 1997. [DOI: 10.1016/s0022-0728(96)04985-6] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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