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Nackiewicz J, Kołodziej Ł, Poliwoda A, Broda MA. Oxidation of diclofenac in the presence of iron(II) octacarboxyphthalocyanine. CHEMOSPHERE 2021; 265:129145. [PMID: 33302208 DOI: 10.1016/j.chemosphere.2020.129145] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 10/29/2020] [Accepted: 11/26/2020] [Indexed: 06/12/2023]
Abstract
This paper presents the results of the research on the influence of catalytic activity of iron(II) octacarboxyphthalocyanines (FePcOC) on the transformation of diclofenac (DCF) which is the most popular anti-inflammatory analgesic. Diclofenac poses a serious threat to the natural environment. The paper demonstrates that diclofenac, in the presence a monomeric form of iron octacarboxyphthalocyanine and hydroxyl radicals (HO•) (from H2O2), undergoes a transformation into diclofenac-2,5-iminoquinone (DCF-2,5-IQ), causing distinct changes in the UV-Vis absorption spectrum. In the presence of iron octacarboxyphthalocyanine and H2O2, the previously colourless diclofenac solution becomes intense orange. As a result, a new band at approx. 450 nm appears in the absorption spectrum. HPLC analysis has shown that the concentration of diclofenac decreases with time. TD-DFT calculations using the CAM-B3LYP/6-31+G (d, p) method have been conducted to confirm experimental data concerning the formation of a new band at λmax = 450 nm.
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Affiliation(s)
- Joanna Nackiewicz
- Faculty of Chemistry, University of Opole, Oleska 48, Opole, 45-052, Poland.
| | - Łukasz Kołodziej
- Faculty of Chemistry, University of Opole, Oleska 48, Opole, 45-052, Poland
| | - Anna Poliwoda
- Faculty of Chemistry, University of Opole, Oleska 48, Opole, 45-052, Poland
| | - Małgorzata A Broda
- Faculty of Chemistry, University of Opole, Oleska 48, Opole, 45-052, Poland
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2
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Saleh Mohammadnia M, Marzi Khosrowshahi E, Naghian E, Homayoun Keihan A, Sohouli E, Plonska-Brzezinska ME, Ali-Sobhani-Nasab, Rahimi-Nasrabadi M, Ahmadi F. Application of carbon nanoonion-NiMoO4-MnWO4 nanocomposite for modification of glassy carbon electrode: Electrochemical determination of ascorbic acid. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105470] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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3
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Sánchez-Calvo A, Costa-García A, Blanco-López MC. Paper-based electrodes modified with cobalt phthalocyanine colloid for the determination of hydrogen peroxide and glucose. Analyst 2020; 145:2716-2724. [DOI: 10.1039/c9an02413a] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Cobalt(ii) phthalocyanine (CoPc) was suspended in aqueous medium and the colloidal system was used as catalyst for the electrochemical determination of hydrogen peroxide on paper-based electrodes modified with carbon nanomaterials.
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Affiliation(s)
- A. Sánchez-Calvo
- Instituto de Biotecnología de Asturias. Departamento de Química Física y Analítica
- Universidad de Oviedo
- 33006 Oviedo
- Spain
| | - A. Costa-García
- Instituto de Biotecnología de Asturias. Departamento de Química Física y Analítica
- Universidad de Oviedo
- 33006 Oviedo
- Spain
| | - M. C. Blanco-López
- Instituto de Biotecnología de Asturias. Departamento de Química Física y Analítica
- Universidad de Oviedo
- 33006 Oviedo
- Spain
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Zahra Heidari, Mahboubeh Masrournia. A Novel Modified Carbon Paste Electrode for the Determination of Chromium(III) in Water. JOURNAL OF ANALYTICAL CHEMISTRY 2018. [DOI: 10.1134/s1061934818080105] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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5
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Jesionowski T, Norman M, Żółtowska-Aksamitowska S, Petrenko I, Joseph Y, Ehrlich H. Marine Spongin: Naturally Prefabricated 3D Scaffold-Based Biomaterial. Mar Drugs 2018; 16:E88. [PMID: 29522478 PMCID: PMC5867632 DOI: 10.3390/md16030088] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 03/06/2018] [Accepted: 03/06/2018] [Indexed: 01/08/2023] Open
Abstract
The biosynthesis, chemistry, structural features and functionality of spongin as a halogenated scleroprotein of keratosan demosponges are still paradigms. This review has the principal goal of providing thorough and comprehensive coverage of spongin as a naturally prefabricated 3D biomaterial with multifaceted applications. The history of spongin's discovery and use in the form of commercial sponges, including their marine farming strategies, have been analyzed and are discussed here. Physicochemical and material properties of spongin-based scaffolds are also presented. The review also focuses on prospects and trends in applications of spongin for technology, materials science and biomedicine. Special attention is paid to applications in tissue engineering, adsorption of dyes and extreme biomimetics.
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Affiliation(s)
- Teofil Jesionowski
- Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, 60965 Poznan, Poland.
| | - Małgorzata Norman
- Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, 60965 Poznan, Poland.
| | - Sonia Żółtowska-Aksamitowska
- Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, 60965 Poznan, Poland.
| | - Iaroslav Petrenko
- Institute of Experimental Physics, TU Bergakademie Freiberg, Leipziger str. 23, 09559 Freiberg, Germany.
| | - Yvonne Joseph
- Institute of Electronics and Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599 Freiberg, Germany.
| | - Hermann Ehrlich
- Institute of Experimental Physics, TU Bergakademie Freiberg, Leipziger str. 23, 09559 Freiberg, Germany.
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Lee YG, Liao BX, Weng YC. Ascorbic acid sensor using a PVA/laccase-Au-NPs/Pt electrode. RSC Adv 2018; 8:37872-37879. [PMID: 35558589 PMCID: PMC9089397 DOI: 10.1039/c8ra06280c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 10/30/2018] [Indexed: 11/21/2022] Open
Abstract
A surface-modified electrode, PVA/laccase-Au-NPs/Pt, was prepared to sense ascorbic acid (H2A) in this study.
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Affiliation(s)
- Yuan-Gee Lee
- Department of Automation Engineer
- Institute of Mechatronoptic Systems
- Chienkuo
- Technology University
- Taiwan
| | - Bo-Xuan Liao
- Department of Chemical Engineering
- Feng Chia University
- Taichung
- Taiwan
| | - Yu-Ching Weng
- Department of Chemical Engineering
- Feng Chia University
- Taichung
- Taiwan
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A Highly Sensitive Ascorbic Acid Sensor Based on Hierarchical Polyaniline Coated Halloysite Nanotubes Prepared by Electrophoretic Deposition. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.09.178] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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8
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Lee YG, Liao BX, Weng YC. Ruthenium oxide modified nickel electrode for ascorbic acid detection. CHEMOSPHERE 2017; 173:512-519. [PMID: 28131921 DOI: 10.1016/j.chemosphere.2017.01.086] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 01/10/2017] [Accepted: 01/16/2017] [Indexed: 06/06/2023]
Abstract
Electrodes of ruthenium oxide modified nickel were prepared by a thermal decomposition method. The stoichiometry of the modifier, RuOx, was quantitatively determined to be a meta-stable phase, RuO5. The electrodes were employed to sense ascorbic acid in alkaline solution with a high sensitivity, 296 μAcm-2 mM-1, and good selectivity for eight kinds of disturbing reagents. We found that the ascorbic acid was oxidized irreversibly in solution. To match with the variation of the morphology, the sensitivity reached a maximum when the RuOx segregated with a nano-crystalline feature. We find that the substrate oxidized as the deposited RuOx grew thicker. The feature of the deposited RuOx changed from nano-particles to small islands resulting from the wetting effect of the substrate oxide, NiO; meanwhile the sensitivity decreased dramatically. The endurance of the RuOx/Ni electrode also showed a good performance after 38 days of successive test.
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Affiliation(s)
- Yuan-Gee Lee
- Department of Automation Engineering and Institute of Mechatronoptic Systems, Chien-Kuo Institute of Technology, Changhua 50094, Taiwan
| | - Bo-Xuan Liao
- Department Chemical Engineering, Feng Chia University, Taichung 40724, Taiwan
| | - Yu-Ching Weng
- Department Chemical Engineering, Feng Chia University, Taichung 40724, Taiwan.
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9
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Potentiometric determination of ascorbic acid in water–acetonitrile solution using pyrite and chalcopyrite electrodes. J Solid State Electrochem 2016. [DOI: 10.1007/s10008-016-3295-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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10
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Nezamzadeh-Ejhieh A, Pouladsaz P. Voltammetric determination of riboflavin based on electrocatalytic oxidation at zeolite-modified carbon paste electrodes. J IND ENG CHEM 2014. [DOI: 10.1016/j.jiec.2013.09.044] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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11
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Two-signal electrochemical method for evaluation suppression and proliferation of MCF-7 cells based on intracellular purine. Anal Biochem 2014; 456:1-5. [DOI: 10.1016/j.ab.2014.03.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Revised: 03/15/2014] [Accepted: 03/17/2014] [Indexed: 01/10/2023]
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12
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Zhao L, Liao K, Pynenburg M, Wong L, Heinig N, Thomas JP, Leung KT. Electro-oxidation of ascorbic acid by cobalt core-shell nanoparticles on a H-terminated Si(100) and by nanostructured cobalt-coated Si nanowire electrodes. ACS APPLIED MATERIALS & INTERFACES 2013; 5:2410-2416. [PMID: 23488767 DOI: 10.1021/am3021763] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Determination of the concentration of ascorbic acid in a solution has attracted intense recent interest. Here we demonstrate the feasibility of electro-oxidation of ascorbic acid on spherical cobalt core-shell nanoparticles (10-50 nm dia.) prepared by electrochemical deposition on a H-terminated Si(100) substrate. Depth-profiling X-ray photoelectron spectroscopy reveals that these nanoparticles consist of a metallic cobalt core covered by a Co(OH)2 shell without any evidence of CoOx. Glancing-incidence X-ray diffraction studies further show that the metallic Co core consists of a mixture of hexagonal close packed and face centered cubic structures, the relative composition of which can be easily controlled by the deposition potential. We further demonstrate that when these Co nanoparticles are deposited on a high-surface-area electrode as provided by a Si nanowire template, the resulting nanostructured Co-coated Si nanowire electrode offers a promising high-performance sensor platform for ascorbic acid detection.
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Affiliation(s)
- Liyan Zhao
- WATLab, and Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
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13
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Pillay J, Vilakazi S. Nanostructured metallophthalocyanine complexes: synthesis and electrocatalysis. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s108842461230008x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In this review, we have attempted to summarize the synthesis and catalytic applications of the nanophthalocyanine complexes. In cases where possible, we have compared the catalytic activity of the nanophthalocyanines to the bulk material. Catalytic detection of dopamine, epinephrine, glucose and some pollutants using nanostructured metallophthalocyanine have been covered.
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Affiliation(s)
- Jeseelan Pillay
- Nanotechnology Innovation Centre, Advanced Materials Division, Mintek, 200 Malibongwe Drive, Randburg 2125, South Africa
| | - Sibulelo Vilakazi
- Nanotechnology Innovation Centre, Advanced Materials Division, Mintek, 200 Malibongwe Drive, Randburg 2125, South Africa
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14
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References. Anal Chem 2012. [DOI: 10.1201/b11478-14] [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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15
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16
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Nezamzadeh-Ejhieh A, Nematollahi Z. Surfactant modified zeolite carbon paste electrode (SMZ-CPE) as a nitrate selective electrode. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.07.013] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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Vázquez D, Tascón M, Deban L. Determination of Ascorbic Acid in Commercial Juices, on a Modified Carbon Paste Electrode, by Using a Taguchi Experimental Design. FOOD ANAL METHOD 2011. [DOI: 10.1007/s12161-011-9258-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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18
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Mohamed GG, El-Shahat MF, Al-Sabagh AM, Migahed MA, Ali TA. Septonex-tetraphenylborate screen-printed ion selective electrode for the potentiometric determination of Septonex in pharmaceutical preparations. Analyst 2011; 136:1488-95. [PMID: 21286616 DOI: 10.1039/c0an00662a] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A screen-printed electrode (SPE) was fabricated for the determination of 1-(ethoxycarbonyl)pentadecyltrimethylammonium bromide (Septonex) based on the use of Septonex-tetraphenylborate as the electroactive substance, and o-nitrophenyloctylether (o-NPOE) as the plasticizing agent. The electrode passes a near-Nernstian cationic slope of 59.33 ± 0.85 mV from activity between pH values of 2 to 9 with a lower detection limit of 9×10(-7) M and response time of about 5 s and exhibits an adequate shelf-life of 6 months. The method was applied for the determination of Septonex in pharmaceutical preparations. A percentage recovery of 99.88% was obtained with RSD=1.24%. The electrode was successfully applied in the determination of Septonex in laboratory-prepared samples by direct potentiometric, calibration curve and standard addition methods. Potentiometric titration of Septonex with sodium tetraphenylborate and phosphotungstic acid as a titrant was monitored with the modified screen-printed electrode as an end-point indicator electrode. Selectivity coefficients for Septonex relative to a number of potential interfering substances were determined. The sensor was highly selective for Septonex over a large number of compounds. Selectivity coefficient data for some common ions show negligible interference; however, cetyltrimethylammonium bromide and iodide ions interfere significantly. The analytical usefulness of the proposed electrode was evaluated by its application in the determination of Septonex in laboratory-prepared pharmaceutical samples with satisfactory results. The results obtained with the fabricated sensor are comparable with those obtained by the British Pharmacopeia method.
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Affiliation(s)
- Gehad G Mohamed
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt.
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Wang K, Dai L, Liu Q, Li H, Ju C, Wu J, Li H. Electrodeposition of unsubstituted iron phthalocyanine nano-structure film in a functionalized ionic liquid and its electrocatalytic and electroanalysis applications. Analyst 2011; 136:4344-9. [DOI: 10.1039/c1an15476a] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Ghaedi M, Shokrollahi A, Salimibeni AR, Noshadi S, Joybar S. Preparation of a new chromium(III) selective electrode based on 1-[(2-hydroxy ethyl) amino]-4-methyl-9H-thioxanthen-9-one as a neutral carrier. JOURNAL OF HAZARDOUS MATERIALS 2010; 178:157-163. [PMID: 20362393 DOI: 10.1016/j.jhazmat.2010.01.057] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2009] [Revised: 01/02/2010] [Accepted: 01/09/2010] [Indexed: 05/29/2023]
Abstract
A new chromium carbon paste electrode sensor based on a carbon paste electrode containing 1-[(2-hydroxy ethyl) amino]-4-methyl-9H-thioxanthen-9-one (AMTX) as new carrier has been prepared. The influence of carbon paste ingredients including sodium tetraphenylborate (NaTPB), ionophore, Nujol and graphite powder on the electrode response has been investigated. The best performance characteristics for the electrode was obtained with a carbon:NaTPB:Nujol:AMTX in the mass ratio of (400:1.43:57.2:3mg) (86.65:0.31:12.39:0.65%). At the optimum value of all variables, the response of electrode is linear in range of 3.2x10(-7) to 1.0x10(-1)mol L(-1) with a Nernstian slope of 20.51 mV decade(-1) of Cr(3+) ion concentration with detection limit of 1.6x10(-7)mol L(-1). The electrode response is independent of pH in the range of 4.8-6.3, while the response time of the electrode was approximately 8 s. The potentiometric selectivity coefficients of proposed chromium-selective electrode towards various interfering ions were determined by fixed interference method (FIM), separate solution method (SSM) and matched potential method (MPM).
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Affiliation(s)
- M Ghaedi
- Chemistry Department, Yasouj University, Zirtol, Kohgyloyeh Boyerahmad 75914-353, Yasouj 75918-74831, Iran.
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Functionalization of conducting polymer with novel Co(II) complex: Electroanalysis of ascorbic acid. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2010. [DOI: 10.1016/j.msec.2010.02.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Ejhieh AN, Masoudipour N. Application of a new potentiometric method for determination of phosphate based on a surfactant-modified zeolite carbon-paste electrode (SMZ-CPE). Anal Chim Acta 2010; 658:68-74. [DOI: 10.1016/j.aca.2009.10.064] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2009] [Revised: 10/26/2009] [Accepted: 10/28/2009] [Indexed: 10/20/2022]
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Abstract
AbstractIn this review (with 500 refs), both electrochemistry and electroanalysis with carbon paste-based electrodes, sensors, and detectors are of interest, when attention is focused on the research activities in the years of new millennium. Concerned are all important aspects of the field, from fundamental investigations with carbon paste as the electrode material, via laboratory examination of the first electrode prototypes, basic and advanced studies of various electrode processes and other phenomena, up to practical applications to the determination of inorganic ions, complexes, and molecules. The latter is presented in a series of extensive tables, offering a nearly complete survey of methods published within the period of 2001–2008. Finally, the latest trends and outstanding achievements are also outlined and future prospects given.
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Şahin M, Özcan L, Usta B, Şahin Y. Determination of ascorbic acid by polypyrrole potentiometric detector in ion chromatography. Biosens Bioelectron 2009; 24:3492-7. [DOI: 10.1016/j.bios.2009.05.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2009] [Revised: 04/18/2009] [Accepted: 05/06/2009] [Indexed: 10/20/2022]
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Zima J, Švancara I, Barek J, Vytřas K. Recent Advances in Electroanalysis of Organic Compounds at Carbon Paste Electrodes. Crit Rev Anal Chem 2009. [DOI: 10.1080/10408340903011853] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Švancara I, Vytřas K, Kalcher K, Walcarius A, Wang J. Carbon Paste Electrodes in Facts, Numbers, and Notes: A Review on the Occasion of the 50-Years Jubilee of Carbon Paste in Electrochemistry and Electroanalysis. ELECTROANAL 2009. [DOI: 10.1002/elan.200804340] [Citation(s) in RCA: 489] [Impact Index Per Article: 32.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Saraswathyamma B, Pająk M, Radecki J, Maes W, Dehaen W, Girish Kumar K, Radecka H. PVC Supported Liquid Membrane and Carbon Paste Potentiometric Sensors Incorporating a Mn(III)-Porphyrin for the Direct Determination of Undissociated Paracetamol. ELECTROANAL 2008. [DOI: 10.1002/elan.200804280] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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28
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Paixão TR, Bertotti M. FIA determination of ascorbic acid at low potential using a ruthenium oxide hexacyanoferrate modified carbon electrode. J Pharm Biomed Anal 2008; 46:528-33. [DOI: 10.1016/j.jpba.2007.10.033] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2007] [Revised: 10/15/2007] [Accepted: 10/28/2007] [Indexed: 10/22/2022]
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29
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Paixão TRLC, Barbosa LF, Carrì MT, Medeiros MHG, Bertotti M. Continuous monitoring of ascorbate transport through neuroblastoma cells with a ruthenium oxide hexacyanoferrate modified microelectrode. Analyst 2008; 133:1605-10. [DOI: 10.1039/b805868g] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Shahrokhian S, Zare-Mehrjardi H. Simultaneous Voltammetric Determination of Uric Acid and Ascorbic Acid Using a Carbon-Paste Electrode Modified with Multi-Walled Carbon Nanotubes/Nafion and Cobalt(II)nitrosalophen. ELECTROANAL 2007. [DOI: 10.1002/elan.200703974] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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31
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Zou X, Luo L, Ding Y, Wu Q. Chitosan Incorporating Cetyltrimethylammonium Bromide Modified Glassy Carbon Electrode for Simultaneous Determination of Ascorbic Acid and Dopamine. ELECTROANAL 2007. [DOI: 10.1002/elan.200703945] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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32
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Amiri M, Shahrokhian S, Psillakis E, Marken F. Electrostatic accumulation and determination of triclosan in ultrathin carbon nanoparticle composite film electrodes. Anal Chim Acta 2007; 593:117-22. [PMID: 17531832 DOI: 10.1016/j.aca.2007.04.042] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2007] [Revised: 04/18/2007] [Accepted: 04/19/2007] [Indexed: 10/23/2022]
Abstract
A film composed of carbon nanoparticles and poly(diallyldimethylammonium chloride) or CNP-PDDAC is formed in a layer-by-layer deposition process at tin-doped indium oxide (ITO) substrates. Excess positive binding sites within this film in aqueous phosphate buffer at pH 9.5 are quantified by adsorption of iron(III)phthalocyanine tetrasulfonate and indigo carmine. Both anionic redox systems bind with Langmuirian characteristics (K approximately 10(5) mol(-1) dm3) and show electrochemical reactivity throughout the film at different thicknesses. Therefore, the electrical conductivity in CNP-PDDAC films is good and the positive binding sites are approximately 140 pmol cm(-2) per layer. Structural instability of the CNP-PDDAC film in the presence of high concentrations of iron(III)phthalocyanine tetrasulfonate or indigo carmine is observed. Triclosan, a widely used anti-bacterial and anti-fungal agent, exists in aqueous media at pH 9.5 as a negatively charged chlorinated poly-aromatic phenol. Due to the negative charge, triclosan is readily accumulated into CNP-PDDAC films with an efficiency consistent with that expected for simple electrostatic interaction with the cationic binding sites. Oxidation of bound triclosan occurs at 0.6 V versus SCE in a chemically irreversible process. The CNP-PDDAC film electrode is renewed by rinsing in organic solvent and the triclosan oxidation response is shown to correlate with the triclosan concentration in solution from 0.5 to 50 microM. Applications of the CNP-PDDAC film electrode (or improved versions of it) in analysis or in anodic extraction are proposed.
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Affiliation(s)
- Mandana Amiri
- Department of Chemistry, Sharif University of Technology, Teheran, Iran
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Langley CE, Sljukić B, Banks CE, Compton RG. Manganese Dioxide Graphite Composite Electrodes: Application to the Electroanalysis of Hydrogen Peroxide, Ascorbic Acid and Nitrite. ANAL SCI 2007; 23:165-70. [PMID: 17297227 DOI: 10.2116/analsci.23.165] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The modification of carbon powder with manganese dioxide using a wet impregnation procedure with electrochemical characterisation of the modified powder is described. The process involves saturation of the carbon powder with manganese(II) nitrate followed by thermal treatment at ca. 773 K leading to formation of manganese(IV) oxide on the surface of the carbon powder. The construction of composite electrodes based on manganese dioxide modified carbon powder and epoxy resin is also described, including optimisation of the percentage of the modified carbon powder. Composite electrodes showed attractive performances for electroanalytical applications, proving to be suitable for the electrochemical detection of hydrogen peroxide, ascorbic acid and nitrite ions with limits of detection comparable to the detection limits achieved by other analytical techniques. The results obtained for detection of these analytes, together with composite electrodes flexible design and low cost offers potential application of composite electrodes in biosensors.
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Affiliation(s)
- Cathryn E Langley
- Physical and Theoretical Chemistry Laboratory, University of Oxford, Oxford, UK
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Shahrokhian S, Amiri M. Voltammetric determination of thiocytosine based on its electrocatalytic oxidation on the surface of carbon-paste electrode modified with cobalt Schiff base complexes. J Solid State Electrochem 2006. [DOI: 10.1007/s10008-006-0250-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Shahrokhian S, Amiri M. Multi-walled carbon nanotube paste electrode for selective voltammetric detection of isoniazid. Mikrochim Acta 2006. [DOI: 10.1007/s00604-006-0665-z] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Raoof J, Ojani R, Beitollahi H, Hossienzadeh R. Electrocatalytic Determination of Ascorbic Acid at the Surface of 2,7-Bis(ferrocenyl ethyl)fluoren-9-one Modified Carbon Paste Electrode. ELECTROANAL 2006. [DOI: 10.1002/elan.200503516] [Citation(s) in RCA: 86] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Shahrokhian S, Ghalkhani M. Simultaneous voltammetric detection of ascorbic acid and uric acid at a carbon-paste modified electrode incorporating thionine–nafion ion-pair as an electron mediator. Electrochim Acta 2006. [DOI: 10.1016/j.electacta.2005.08.001] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Dilgin Y, Nişli G. Flow Injection Photoamperometric Investigation of Ascorbic Acid Using Methylene Blue Immobilized on Titanium Phosphate. ANAL LETT 2006. [DOI: 10.1080/00032710500536053] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Shahrokhian S, Jannat-Rezvani MJ. Voltammetric Studies of Propylthiouracil at a Carbon-Paste Electrode Modified with Cobalt(II)-4-chlorosalophen: Application to Voltammetric Determination in Pharmaceutical and Clinical Preparations. Mikrochim Acta 2005. [DOI: 10.1007/s00604-005-0382-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Ijeri V, Algarra M, Martins A. Electrocatalytic Determination of Vitamin C Using Calixarene Modified Carbon Paste Electrodes. ELECTROANAL 2004. [DOI: 10.1002/elan.200403054] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Shahrokhian S, Karimi M. Voltammetric studies of a cobalt(II)-4-methylsalophen modified carbon-paste electrode and its application for the simultaneous determination of cysteine and ascorbic acid. Electrochim Acta 2004. [DOI: 10.1016/j.electacta.2004.07.015] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Shahrokhian S, Souri A, Khajehsharifi H. Electrocatalytic oxidation of penicillamine at a carbon paste electrode modified with cobalt salophen. J Electroanal Chem (Lausanne) 2004. [DOI: 10.1016/j.jelechem.2003.09.039] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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All-solid-state potentiometric sensors for ascorbic acid by using a screen-printed compatible solid contact. Anal Chim Acta 2004. [DOI: 10.1016/j.aca.2003.09.060] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Current awareness in phytochemical analysis. PHYTOCHEMICAL ANALYSIS : PCA 2001; 12:286-291. [PMID: 11708301 DOI: 10.1002/pca.556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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