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Smajdor J, Paczosa-Bator B, Piech R. Advances on Hormones and Steroids Determination: A Review of Voltammetric Methods since 2000. MEMBRANES 2022; 12:1225. [PMID: 36557132 PMCID: PMC9782681 DOI: 10.3390/membranes12121225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 11/18/2022] [Accepted: 11/22/2022] [Indexed: 06/17/2023]
Abstract
This article presents advances in the electrochemical determination of hormones and steroids since 2000. A wide spectrum of techniques and working electrodes have been involved in the reported measurements in order to obtain the lowest possible limits of detection. The voltammetric and polarographic techniques, due to their sensitivity and easiness, could be used as alternatives to other, more complicated, analytical assays. Still, growing interest in designing a new construction of the working electrodes enables us to prepare new measurement procedures and obtain lower limits of detection. A brief description of the measured compounds has been presented, along with a comparison of the obtained results.
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Kuzmin SM, Chulovskaya SA, Koifman OI, Parfenyuk VI. Poly-porphyrin electrocatalytic films obtained via new superoxide-assisted electrochemical deposition method. Electrochem commun 2017. [DOI: 10.1016/j.elecom.2017.08.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Delphinidin immobilized on silver nanoparticles for the simultaneous determination of ascorbic acid, noradrenalin, uric acid, and tryptophan. J Food Drug Anal 2016; 24:406-416. [PMID: 28911596 PMCID: PMC9339575 DOI: 10.1016/j.jfda.2015.11.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 10/30/2015] [Accepted: 11/29/2015] [Indexed: 11/23/2022] Open
Abstract
In the present study, the fabrication of a new modified electrode for electrocatalytic oxidation of noradrenalin, based on the delphinidin immobilized on silver nanoparticles modified glassy carbon electrode. Cyclic voltammetry was used to investigate the redox properties of this modified electrode. The surface charge transfer rate constant (ks) and the charge transfer coefficient (α) for the electron transfer between the glassy carbon electrode and the immobilized delphinidin were calculated. The differential pulse voltammetry exhibited two linear dynamic ranges and a detection limit of 0.40μM for noradrenalin determination. Moreover, the present electrode could separate the oxidation peak potentials of ascorbic acid, noradrenalin, uric acid, and tryptophan in a mixture. The usefulness of this nanosensor was also investigated for the determination of ascorbic acid, noradrenalin, and uric acid in pharmaceutical and biological fluid samples with satisfactory results.
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Li C, Guo B, Guo XM, Wang F. The electrochemical sensor based on electrochemical oxidation of nitrite on metalloporphyrin–graphene modified glassy carbon electrode. RSC Adv 2016. [DOI: 10.1039/c6ra08269f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this study, 5-(4-aminophenyl)-10,15,20-triphenylporphyrin]Mn(iii) (MnNH2TPP) and graphene oxide (GO) composite materials (GO–MnNH2TPP) were successfully used to modify a glassy carbon electrode (GC) by the drop casting method.
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Affiliation(s)
- C. Li
- School of Life Science of Technology Institution
- Harbin Institute of Technology
- China
| | - B. Guo
- School of Materials Science and Engineering Institution
- Harbin Institute of Technology
- China
| | - X. M. Guo
- School of Life Science of Technology Institution
- Harbin Institute of Technology
- China
| | - F. Wang
- School of Life Science of Technology Institution
- Harbin Institute of Technology
- China
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Synergetic catalysis based on the proline tailed metalloporphyrin with graphene sheet as efficient mimetic enzyme for ultrasensitive electrochemical detection of dopamine. Biosens Bioelectron 2015; 77:1032-8. [PMID: 26556183 DOI: 10.1016/j.bios.2015.10.085] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 10/29/2015] [Indexed: 12/25/2022]
Abstract
In this paper, linking with the butoxycarbonyl (BOC) protection of proline, a new tailed metalloporphyrin with many useful active functions, nickel (II) 5-[4-N-(tert-Butoxycarbonyl)-l-prolinecoxylpropyloxy]phenyl-10,15,20-triphenylporphyrin (NiTBLPyP), was designed and synthesized. And the NiTBLPyP polymer (poly(NiTBLPyP)) was successfully obtained via a low-cost electrochemical method and exploited as an efficient mimic enzyme. Subsequently, a noncovalent nanohybrid of poly(NiTBLPyP) with graphene (rGO) sheet (rGO-poly(NiTBLPyP)) was prepared through π-π stacking interaction for the ultrasensitive and selective detection of DA. The nanohybrid was characterized by UV-vis spectroscopy, Fourier transform infrared spectra, Raman spectroscopy, scanning electron microscopy and electrochemical impedance spectroscopy. Due to the excellent electrocatalytic ability of poly(NiTBLPyP) film and aromatic π-π stacking interaction between poly(NiTBLPyP and rGO sheet, the obtained rGO-poly(NiTBLPyP) film exhibited a great synergistic amplification effect toward dopamine oxidation. Under optimum experimental conditions, the logarithm of catalytic currents showed a good linear relationship with that of the dopamine concentration in the range of 0.01-200 μM with a low detection limit of 1.40 nM. With good sensitivity and selectivity, the present method was applied to the determination of DA in real sample and the results was satisfactory. Thus, the rGO-poly(NiTBLPyP) film is one of the promising mimetic enzyme for electrocatalysis and relevant fields.
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Ribeiro GH, Vilarinho LM, Ramos TDS, Bogado AL, Dinelli LR. Electrochemical behavior of hydroquinone and catechol at glassy carbon electrode modified by electropolymerization of tetraruthenated oxovanadium porphyrin. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.06.139] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Simultaneous determination of norepinephrine, acetaminophen and tyrosine by differential pulse voltammetry using Au-nanoparticles/poly(2-amino-2-hydroxymethyl-propane-1,3-diol) film modified glassy carbon electrode. Colloids Surf B Biointerfaces 2014; 123:23-32. [PMID: 25240479 DOI: 10.1016/j.colsurfb.2014.09.005] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2014] [Revised: 07/09/2014] [Accepted: 09/03/2014] [Indexed: 12/12/2022]
Abstract
A novel Au-nanoparticles/poly-(2-amino-2-hydroxymethyl-propane-1,3-diol) film modified glassy carbon electrode (AuNPs/poly(trisamine)/GCE) was constructed for the simultaneous determination of norepinephrine (NE), acetaminophen (AC) and L-tyrosine (Tyr) by differential pulse voltammetry. Electrochemical impedance spectroscopy and scanning electron microscopy indicate that the trisamine film was successfully polymerized on the surface of GCE and the film efficiently decreased the charge transfer resistance value of electrode and improved the electron transfer kinetic between analytes and electrode. The separation of the oxidation peak potentials for NE-AC and AC-Tyr were about 160 mV and 240 mV, respectively. The calibration curves for NE, AC and Tyr were obtained in the range of 1.3-230.1 μmol L(-1), 1.90-188.0 μmol L(-1), and 3.9-61.8 μmol L(-1), respectively. The detection limits (S/N=3) were 0.07 μmol L(-1), 0.1 μmol L(-1) and 0.9 μmol L(-1), for NE, AC and Tyr, respectively. The diffusion coefficient and the catalytic rate constant for the oxidation reaction of NE at AuNPs/poly(trisamine)/GCE were calculated as 1.55 (±0.2)×10(-6) cm2 s(-1) and 2.28 (±0.17)×10(3) mol(-1) L s(-1), respectively. Finally, AuNPs/poly(trisamine)/GCE was satisfactorily used for the determination of NE, AC, and Tyr in pharmaceutical and biological samples.
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Moghaddam HM, Beitollahi H, Tajik S, Karimi Maleh H, Noudeh GD. Simultaneous determination of norepinephrine, acetaminophen and tryptophan using a modified graphene nanosheets paste electrode. RESEARCH ON CHEMICAL INTERMEDIATES 2014. [DOI: 10.1007/s11164-014-1785-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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9
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Tesakova MV, Popov IA, Parfenyuk VI. Electrochemical properties of derivatives of tetraphenylporphyrin in dichloromethane. RUSS J ELECTROCHEM+ 2014. [DOI: 10.1134/s102319351406010x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Pahlavan A, Gupta VK, Sanati AL, Karimi F, Yoosefian M, Ghadami M. ZnO/CNTs nanocomposite/ionic liquid carbon paste electrode for determination of noradrenaline in human samples. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.01.006] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Tesakova MV, Sheinin VB, Parfenyuk VI. Physicochemical properties of an electroconductive film based on tetrakis(p-aminophenyl)porphine. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2014. [DOI: 10.1134/s0036024414020277] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Pradhan T, Jung HS, Jang JH, Kim TW, Kang C, Kim JS. Chemical sensing of neurotransmitters. Chem Soc Rev 2014; 43:4684-713. [DOI: 10.1039/c3cs60477b] [Citation(s) in RCA: 156] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
This review focuses on the chemosensors for neurotransmitters published for the last 12 years, covering biogenic amines (dopamine, epinephrine, norepinephrine, serotonin, histamine and acetylcholine), amino acids (glutamate, aspartate, GABA, glycine and tyrosine), and adenosine.
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Affiliation(s)
- Tuhin Pradhan
- Department of Chemistry
- Korea University
- Seoul 130-701, Korea
- Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology
- and Department of Chemistry
| | - Hyo Sung Jung
- Department of Chemistry
- Korea University
- Seoul 130-701, Korea
| | - Joo Hee Jang
- Department of Chemistry
- Korea University
- Seoul 130-701, Korea
| | - Tae Woo Kim
- The East-West Medical Science
- Kyung Hee University
- Yongin 446-701, Korea
| | - Chulhun Kang
- The East-West Medical Science
- Kyung Hee University
- Yongin 446-701, Korea
| | - Jong Seung Kim
- Department of Chemistry
- Korea University
- Seoul 130-701, Korea
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Electrochemical investigation of a novel metalloporphyrin intercalated layered niobate modified electrode and its electrocatalysis on ascorbic acid. J Solid State Electrochem 2013. [DOI: 10.1007/s10008-013-2230-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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14
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Ma X, Chao M, Chen M. Simultaneous electrochemical determination of norepinephrine, ascorbic acid and uric acid using a graphene modified glassy carbon electrode. RUSS J ELECTROCHEM+ 2013. [DOI: 10.1134/s1023193513050108] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Valicsek Z, Horváth O. Application of the electronic spectra of porphyrins for analytical purposes: The effects of metal ions and structural distortions. Microchem J 2013. [DOI: 10.1016/j.microc.2012.07.002] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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16
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Zare HR, Rahmani N, Nasirizadeh N, Benvidi A. A combination of nordihydroguaiaretic acid as an electron transfer mediator and multi-walled carbon nanotubes for simultaneous electrocatalytic determination of noradrenaline, uric acid, and tryptophan. Catal Sci Technol 2013. [DOI: 10.1039/c3cy20761g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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MCM/ZrO2 nanoparticles modified electrode for simultaneous and selective voltammetric determination of epinephrine and acetaminophen. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2012. [DOI: 10.1007/s13738-012-0121-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Selective determination of norepinephrine in the presence of ascorbic and uric acids using an ultrathin polymer film modified electrode. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2010.11.043] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Mazloum-Ardakani M, Beitollahi H, Mohseni MAS, Benvidi A, Naeimi H, Nejati-Barzoki M, Taghavinia N. Simultaneous determination of epinephrine and acetaminophen concentrations using a novel carbon paste electrode prepared with 2,2′-[1,2 butanediylbis(nitriloethylidyne)]-bis-hydroquinone and TiO2 nanoparticles. Colloids Surf B Biointerfaces 2010; 76:82-7. [DOI: 10.1016/j.colsurfb.2009.10.019] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2009] [Revised: 10/05/2009] [Accepted: 10/09/2009] [Indexed: 10/20/2022]
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Jeong HS, Kim SM, Seol HJ, You JM, Jeong ES, Kim SK, Seol KS, Jeon SW. Determination of Hydrogen Peroxide on Modified Glassy Carbon Electrode by Polytetrakis(2-aminophenyl)porphyrin Nanowire. B KOREAN CHEM SOC 2009. [DOI: 10.5012/bkcs.2009.30.12.2979] [Citation(s) in RCA: 15] [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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21
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Zhang HL, Liu Y, Lai GS, Yu AM, Huang YM, Jin CM. Calix[4]arene crown-4 ether modified glassy carbon electrode for electrochemical determination of norepinephrine. Analyst 2009; 134:2141-6. [DOI: 10.1039/b909805d] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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A selective determination of norepinephrine on the glassy carbon electrode modified with poly(ethylenedioxypyrrole dicarboxylic acid) nanofibers. J Solid State Electrochem 2008. [DOI: 10.1007/s10008-008-0766-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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23
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Lin Z, Chen J, Chi Y, Qui B, Lin J, Chen G. Electrochemiluminescent behavior of luminol on the glassy carbon electrode modified with CoTPP/MWNT composite film. Electrochim Acta 2008. [DOI: 10.1016/j.electacta.2008.04.061] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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24
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Ye F, Nan J, Wang L, Song Y, Kim KB. The ultrasonic electropolymerization of an 5-[o-(4-bromine amyloxy)phenyl]-10,15,20-triphenylporphrin (o-BrPETPP) film electrode and its electrocatalytic properties to dopamine oxidation in aqueous solution. Electrochim Acta 2008. [DOI: 10.1016/j.electacta.2007.12.063] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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25
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Simultaneous voltammetric determination of norepinephrine, ascorbic acid and uric acid on polycalconcarboxylic acid modified glassy carbon electrode. Biosens Bioelectron 2008; 23:1488-95. [PMID: 18289842 DOI: 10.1016/j.bios.2008.01.001] [Citation(s) in RCA: 98] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2007] [Revised: 12/02/2007] [Accepted: 01/03/2008] [Indexed: 11/24/2022]
Abstract
A novel polycalconcarboxylic acid (CCA) modified glassy carbon electrode (GCE) was fabricated by electropolymerization and then successfully used to simultaneously determine ascorbic acid (AA), norepinephrine (NE) and uric acid (UA). The characterization of electrochemically synthesized Poly-CCA film was investigated by atomic force microscopy (AFM), electrochemical impedance spectroscopy (EIS) and voltammetric methods. It was found that the electrochemical behavior of the polymer-modified electrode depended on film thickness, i.e., the electropylmyerization time. Based on the electrochemical data, the charge transfer coefficient (alpha) and the surface coverage (Gamma) were calculated. This poly-CCA modified GCE could reduce the overpotential of ascorbic acid (AA), norepinephrine (NE) and uric acid (UA) oxidation in phosphate buffer solution (pH 6.0), while it increases the peak current significantly. The current peak separations of AA/NE, NE/UA and AA/UA on this modified electrode are 91mV, 256mV and 390mV in CV at 100mVs(-1), respectively. Therefore, the voltammetric responses of these three compounds can be well resolved on the polymer-modified electrode, and simultaneously determination of these three compounds can be achieved. In addition, this modified electrode can be successfully applied to determine AA and NE in injection and UA in urine samples without interferences.
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Song Y. Theoretical study on the electrochemical behavior of norepinephrine at Nafion multi-walled carbon nanotubes modified pyrolytic graphite electrode. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2007; 67:1169-77. [PMID: 17141559 DOI: 10.1016/j.saa.2006.10.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2006] [Revised: 10/04/2006] [Accepted: 10/04/2006] [Indexed: 05/12/2023]
Abstract
DFT-B3LYP/6-31G (d, p) and HF/6-31G (d, p) calculations are performed for deoxidized norepinephrineat (NP(R)) and its oxidized form (NP(O)). The electrochemistry of norepinephrineat (NP) was studied by cyclic voltammetry (CV) at a pyrolytic graphite electrode modified by Nafion multi-walled carbon nanotubes (MWNTs) in phosphate buffers at pH 6.0, showing that the standard electrode potential of half reaction for NP(O), H+/NP(R) is 0.75l V. This experimental standard electrode potential of half reaction is consistent with that calculated using the energies of solvation and sum of electronic and thermal free energies of NP(R) and NP(O). The frontier orbital theory and Mülliken charges of molecular explain the electrochemical behavior of CV at modified electrode well. The singlet vertical excited states for NP(R) and NP(O) are also discussed.
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Affiliation(s)
- Yuanzhi Song
- Chemistry Department, Huaiyin Teachers College, Key Laboratory for Chemistry of Low-Dimensional Materials, Jiangsu Province, Huai An 223300, People's Republic of China.
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Karim MM, Alam SM, Lee SH. Spectrofluorimetric Estimation of Norepinephrine Using Ethylenediamine Condensation Method. J Fluoresc 2007; 17:427-36. [PMID: 17492368 DOI: 10.1007/s10895-007-0188-y] [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: 01/01/2007] [Accepted: 03/28/2007] [Indexed: 10/23/2022]
Abstract
A simple and sensitive method for the determination of norepinephrine is described. Norepinephrine (NE) was oxidized by mercury (II) nitrate and the oxidation product was condensed with ethylenediamine (EDA) to form a strong fluorescent compound. The addition of acetone enhances the light intensity. The measurement was carried out at 507 nm with excitation at 420 nm. A linear relationship was obtained between the fluorescence intensity and norepinephrine concentration in the range of 0.01 microM-0.014 mM; the correlation coefficient and the detection limit are 0.99813 and 2.5 nM, respectively. The interference from dopamine (DA) can be eliminated by first derivative synchronous fluorimetric method using peak to zero technique. The recovery efficiency was performed using known amounts of norepinephrine in urine sample and the results indicate a 95-98.62% recovery. The proposed method was also applied to the determination of norepinephrine in injections solution. The reaction mechanism was also described.
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Jin JH, Brolo AG. Protoporphyrin-modified gold surfaces for the selective monitoring of catecholamines. Electrochim Acta 2007. [DOI: 10.1016/j.electacta.2006.11.003] [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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Yang Z, Hu G, Chen X, Zhao J, Zhao G. The nano-Au self-assembled glassy carbon electrode for selective determination of epinephrine in the presence of ascorbic acid. Colloids Surf B Biointerfaces 2007; 54:230-5. [PMID: 17158037 DOI: 10.1016/j.colsurfb.2006.10.033] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2006] [Revised: 10/22/2006] [Accepted: 10/23/2006] [Indexed: 11/22/2022]
Abstract
Gold nanoparticles were self-assembled to the modified glassy carbon electrode (GC) with cysteamine (CA) to prepare the nano-Au/CA/GC modified electrode. The electrochemical behavior of epinephrine (EP) on the modified electrode was explored with cyclic voltammetry (CV) and differential pulse voltammetry (DPV). Epinephrine gave a pair of redox peaks at E(pa)=0.190 mV and E(pc)=-0.224 mV (versus SCE), respectively. The nano-Au/CA/GC modified electrode shows an excellent electrocatalytic activity for the oxidation of EP. The modified electrode could be used to determine EP in the presence of ascorbic acid (AA). The response of catalytic current with EP concentration shows a linear relation in the range of 1.0 x 10(-7) to 5.0 x 10(-4) mol L(-1) with the correlation coefficient of 0.998. The detection limit is 4.0 x 10(-8) mol L(-1). The modified electrode exhibited a good reproducibility, sensitivity and stability for the determination of EP injection.
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Affiliation(s)
- Zhousheng Yang
- College of Chemistry and Materials Science, Anhui Key Laboratory of Functional Molecular Solids, Anhui Normal University, Wuhu 241000, PR China.
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Lin X, Li W, Yao H, Sun Y, Huang L, Zheng Y. Electrocatalytic Response and Determination of Noradrenaline in the Presence of L-Ascorbic and Uric Acids with Poly(Eriochrome Black T)-Modified Electrode. ACTA ACUST UNITED AC 2007. [DOI: 10.1135/cccc20071177] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A poly(Eriochrome Black T) chemically modified glassy carbon electrode modified with Eriochrome Black T was prepared by cyclic voltammetry. The modified electrode showed an excellent electrocatalytic activity in oxidation of noradrenaline (NA) and could separate its electrochemical responses from those of L-ascorbic acid (AA) and uric acid (UA). Differences of the oxidation peak potentials for NA-AA and UA-NA were about 150 mV. The responses to NA, AA and UA of the modified electrode are relatively independent. Using differential pulse voltammetry, the peak currents of NA at modified glassy carbon electrode increased linearly with the concentration of NA from 0.5 to 100 μmol l-1. The detection limit was 0.2 μmol l-1. With the modified electrode, UA could be selectively determined in the presence of AA. The method showing a wide linear dynamic range and excellent sensitivity was successfully applied to the determination of NA in pharmaceutical injections and various samples.
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31
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On the photo- and electro-induced polymerization of M(tetrakis(x-aminophenyl)porphyrin), where x=2, 3 or 4 and M=Zn(II) or Ni(II). Inorganica Chim Acta 2006. [DOI: 10.1016/j.ica.2005.08.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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