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Qi H, Qiu L, Zhang X, Yi T, Jing J, Sami R, Alanazi SF, Alqahtani Z, Aljabri MD, Rahman MM. Novel N-doped carbon dots derived from citric acid and urea: fluorescent sensing for determination of metronidazole and cytotoxicity studies. RSC Adv 2023; 13:2663-2671. [PMID: 36741170 PMCID: PMC9846458 DOI: 10.1039/d2ra07150a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 01/06/2023] [Indexed: 01/19/2023] Open
Abstract
Blue emitting nitrogen-doped carbon dots were synthesized using citric acid and urea through the hydrothermal method, and the fluorescence quantum yield was 35.08%. We discovered that N-CDs featured excellent robust fluorescence stability and chemical resistance. For metronidazole detection, our N-CDs exhibited quick response time, high selectivity and sensitivity, and low cytotoxicity. Specifically, our N-CDs could detect metronidazole in the linear range of 0-179 μM, and the LOD was 0.25 μM. Furthermore, metronidazole efficaciously quenches the fluorescence of N-CDs, possibly owing to the inner filter effect. Lastly, we have employed our N-CDs to detect metronidazole in commercial metronidazole tablets with high accuracy. Overall, the newly prepared fluorescence sensor, N-CDs, demonstrated a huge potential to detect metronidazole in a simple, efficient, sensitive, and rapid manner.
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Affiliation(s)
- Haiyan Qi
- College of Chemistry and Chemical Engineering, Qiqihar UniversityQiqiharHeilongjiang Province161006China,Technology Innovation Center of Industrial Hemp for State Market Regulation, Qiqihar UniversityQiqihar 161006China
| | - Lixin Qiu
- College of Chemistry and Chemical Engineering, Qiqihar UniversityQiqiharHeilongjiang Province161006China
| | - Xiaohong Zhang
- College of Chemistry and Chemical Engineering, Qiqihar UniversityQiqiharHeilongjiang Province161006China
| | - Tonghui Yi
- Laboratory of Molecular Biology, Health Inspection Center of Qiqihar Medical UniversityQiqihar 161006HeilongjiangChina
| | - Jing Jing
- School of Medicine and Health, Harbin Institute of TechnologyNo.92, West Dazhi StreetHarbin150000China
| | - Rokayya Sami
- Department of Food Science and Nutrition, College of Sciences, Taif UniversityP.O. 11099Taif 21944Saudi Arabia
| | - Sitah F. Alanazi
- Imam Mohammad Ibn Saud Islamic University, College of Science, Department of PhysicsRiyadh11642Saudi Arabia
| | - Zahrah Alqahtani
- Department of Physics, Faculty of Science, Taif UniversityP.O. 11099Taif 21944Saudi Arabia
| | - Mahmood D. Aljabri
- Department of Chemistry, University College in Al-Jamoum, Umm Al-Qura UniversityMakkah21955Saudi Arabia
| | - Mohammed M. Rahman
- Department of Chemistry, Faculty of Science, King Abdulaziz UniversityJeddah 2158980203Saudi Arabia
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2
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Krejčová-Širlová Z, Barek J, Vyskočil V. Voltammetric Studies of the Interaction of Genotoxic 2-Nitrofluorene with DNA. Bioelectrochemistry 2022; 149:108326. [DOI: 10.1016/j.bioelechem.2022.108326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 11/08/2022] [Accepted: 11/13/2022] [Indexed: 11/18/2022]
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3
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Silver-Capped Selenium Explored As an Electro-Catalyst for Simultaneous Detection of Nitro-Aromatic Drugs in Different Aqueous Samples. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.01.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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4
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Ultrasensitive and portable fluorescence polyurethane indicator paper for real-time, visual and selective detection of 2,4,6-trinitrophenol. CHEMICAL ENGINEERING JOURNAL ADVANCES 2021. [DOI: 10.1016/j.ceja.2020.100069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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5
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Karthik R, Mutharani B, Chen SM, Vinoth Kumar J, Abinaya M, Chen TW, Lei W, Hao Q. Synthesis, characterization and catalytic performance of nanostructured dysprosium molybdate catalyst for selective biomolecule detection in biological and pharmaceutical samples. J Mater Chem B 2020; 7:5065-5077. [PMID: 31432868 DOI: 10.1039/c9tb01020c] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The current study reports a new, simple and fast method using a flake-like dysprosium molybdate (Dy2MoO6; FL-DyM) nanostructured material to detect the antibiotic drug metronidazole (METZ). This nanocomposite material was employed on the surface of a glassy carbon electrode (GCE) to develop the electrode (FL-DyM/GCE). Further, the synthesized FL-DyM was systematically characterized by powder X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray diffraction (EDS), elemental mapping, X-ray photoelectron spectroscopy (XPS), and Brunauer-Emmett-Teller (BET) analyses. Cyclic (CV) and differential pulse voltammetry (DPV) techniques were used to study the electrochemical properties. The FL-DyM/GCE-based sensor demonstrated excellent selectivity and sensitivity for the detection of the drug METZ, which could be attributed to the strong affinity of FL-DyM towards the -NO2 group in METZ, and the good electrocatalytic activity and conductivity of FL-DyM. The fabrication and optimization of the working electrode were accomplished with CV and DPV obtained by scan rate and pH studies. Compared to the bare GCE and other rare-earth metal molybdates, the FL-DyM/GCE sensor displayed a superior electrocatalytic activity response for METZ detection. The sensor demonstrated a good linear relationship over the concentration range of 0.01-2363 μM. The quantification and detection limits were found to be 0.010 μM and 0.0030 μM, respectively. The FL-DyM/GCE sensor displayed excellent selectivity, repeatability, reproducibility, and stability for the detection of METZ in human urine and commercial METZ tablet samples, which validates the new technique for efficient drug sensing in practical applications.
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Affiliation(s)
- Raj Karthik
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, Republic of China.
| | - Bhuvanenthiran Mutharani
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, Republic of China.
| | - Shen-Ming Chen
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, Republic of China.
| | - Jeyaraj Vinoth Kumar
- Department of Chemistry, Nanomaterials Laboratory, IRC, Kalasalingam Academy of Research and Education, Krishnankoil, Tamil Nadu 626 126, India
| | | | - Tse-Wei Chen
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, Republic of China.
| | - Wu Lei
- School of Chemical Engineering, Nanjing University of Science and Technology, 210094, P. R. China.
| | - Qingli Hao
- School of Chemical Engineering, Nanjing University of Science and Technology, 210094, P. R. China.
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6
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de Jesus VO, Ferreira VS, Lucca BG. Electrochemical study and simultaneous voltammetric determination of contraceptives ethinylestradiol and cyproterone acetate using silver nanoparticles solid amalgam electrode and cationic surfactant. Talanta 2020; 210:120610. [PMID: 31987179 DOI: 10.1016/j.talanta.2019.120610] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 11/28/2019] [Accepted: 11/30/2019] [Indexed: 12/22/2022]
Abstract
In this work we propose the voltammetric analysis of contraceptive hormones ethinylestradiol (EE) and cyproterone acetate (CPA) using solid amalgam electrode fabricated with silver nanoparticles. To the best of our knowledge, this is the first report describing the simultaneous determination of these two compounds and also the first report of the use of amalgam electrode for analysis of EE and CPA. The voltammetric behavior of both substances was investigated by their reduction. An irreversible electrochemical process involving two protons and two electrons was found for each compound. The analytical assays were carried out using staircase voltammetry (SCV). Due to this, aiming to improve the analytical sensitivity, the cationic surfactant cetyltrimethylammonium bromide was also used. The instrumental and experimental parameters were studied and optimized to achieve the best conditions for the analysis. Under the optimum conditions, the voltammetric signals of EE and CPA showed dependence on the concentration range from 6.4 × 10-7 to 7.8 × 10-6 mol L-1 and from 1.0 × 10-6 to 1.0 × 10-5 mol L-1, respectively. The limits of detection obtained were 1.03 × 10-7 mol L-1 for EE and 2.99 × 10-7 mol L-1 for CPA. The analytical usefulness of the method was evaluated through its application on the simultaneous determination of EE and CPA in pharmaceutical formulations and urine samples. The two analytes were successfully quantified in these samples with good precision and the values found presented satisfactory concordance with the reference values, suggesting acceptable analytical efficiency for the approach described here.
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Affiliation(s)
- Vanessa Oliveira de Jesus
- Instituto de Química, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, 79074-460, Brazil
| | - Valdir Souza Ferreira
- Instituto de Química, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, 79074-460, Brazil
| | - Bruno Gabriel Lucca
- Instituto de Química, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, 79074-460, Brazil.
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Huang Y, Bai S, Huang J, Ma Y, Zeng Q, Wang M, Wang L. Simultaneous detection of nitrophenol isomers using an easy-to-fabricate thiophene-based microporous polymer film modified electrode. Microchem J 2020. [DOI: 10.1016/j.microc.2019.104465] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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8
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Yuan S, Bo X, Guo L. In-situ insertion of multi-walled carbon nanotubes in the Fe3O4/N/C composite derived from iron-based metal-organic frameworks as a catalyst for effective sensing acetaminophen and metronidazole. Talanta 2019; 193:100-109. [DOI: 10.1016/j.talanta.2018.09.065] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 09/10/2018] [Accepted: 09/18/2018] [Indexed: 01/23/2023]
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9
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Sanchez CA, Rodríguez JA, Paez-Hernandez ME, Santos EM, Castrillejo Y. Zero-valent Iron Nanoparticles Modified Screen-printed Electrode for FIA or HPLC Amperometric Detection of Metronidazole in Pharmaceutical Formulations. ELECTROANAL 2018. [DOI: 10.1002/elan.201800617] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Cesar A. Sanchez
- Universidad Autonoma del Estado de Hidalgo; Area Academica de Quimica; Carr. Pachuca-Tulancingo Km. 4.5 42184, Mineral de la Reforma Hidalgo Mexico
| | - Jose A. Rodríguez
- Universidad Autonoma del Estado de Hidalgo; Area Academica de Quimica; Carr. Pachuca-Tulancingo Km. 4.5 42184, Mineral de la Reforma Hidalgo Mexico
| | - M. Elena Paez-Hernandez
- Universidad Autonoma del Estado de Hidalgo; Area Academica de Quimica; Carr. Pachuca-Tulancingo Km. 4.5 42184, Mineral de la Reforma Hidalgo Mexico
| | - Eva M. Santos
- Universidad Autonoma del Estado de Hidalgo; Area Academica de Quimica; Carr. Pachuca-Tulancingo Km. 4.5 42184, Mineral de la Reforma Hidalgo Mexico
| | - Yolanda Castrillejo
- Universidad de Valladolid; Facultad de Ciencias; Depto. Quimica Analitica.; Paseo de Belén 7 47011 Valladolid Spain
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10
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Venkataprasad G, Reddy TM, Shaikshavali P, Gopal P. A Novel Electrochemical Sensor Based on Multi-walled Carbon Nanotubes/Poly (L-Methionine) for the Investigation of 5-Nitroindazole: A Voltammetric Study. ACTA ACUST UNITED AC 2018. [DOI: 10.1080/22297928.2018.1479304] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- G. Venkataprasad
- Electrochemical Research Laboratory, Department of Chemistry, S.V.U. College of Sciences, Sri Venkateswara University, Tirupati-517502, Andhra Pradesh, India
| | - T. Madhusudana Reddy
- Electrochemical Research Laboratory, Department of Chemistry, S.V.U. College of Sciences, Sri Venkateswara University, Tirupati-517502, Andhra Pradesh, India
| | - P. Shaikshavali
- Electrochemical Research Laboratory, Department of Chemistry, S.V.U. College of Sciences, Sri Venkateswara University, Tirupati-517502, Andhra Pradesh, India
| | - P. Gopal
- Electrochemical Research Laboratory, Department of Chemistry, S.V.U. College of Sciences, Sri Venkateswara University, Tirupati-517502, Andhra Pradesh, India
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11
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Wang Y, Cao W, Wang L, Zhuang Q, Ni Y. Electrochemical determination of 2,4,6-trinitrophenol using a hybrid film composed of a copper-based metal organic framework and electroreduced graphene oxide. Mikrochim Acta 2018; 185:315. [PMID: 29869157 DOI: 10.1007/s00604-018-2857-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 05/28/2018] [Indexed: 01/23/2023]
Abstract
A metal organic framework (MOF) of the type copper(II)-1,3,5-benzenetricarboxylic acid (Cu-BTC) was electrodeposited on electroreduced graphene oxide (ERGO) placed on a glassy carbon electrode (GCE). The modified GCE was used for highly sensitive electrochemical determination of 2,4,6-trinitrophenol (TNP). The fabrication process of the modified electrode was characterized by scanning electron microscopy and electrochemical impedance spectroscopy. Differential pulse voltammetry (DPV) demonstrates that the Cu-BTC/ERGO/GCE gives stronger signals for TNP reduction than Cu-BTC/GCE or ERGO/GCE alone. DPV also shows TNP to exhibit three reduction peaks, the first at a potential of -0.42 V (vs. SCE). This potential was selected because the other three similarly-structured compounds (2-nitrophenol, 4-nitrophenol, 2,4-dinitrophenol) do not give a signal at this potential. Response is linear in the 0.2 to 10 μM TNP concentration range, with a 0.1 μM detection limit (at S/N = 3) and a 15.98 μA∙μM-1∙cm-2 sensitivity under optimal conditions. The applicability of the sensor was evaluated by detecting TNP in spiked tap water and lake water samples. Recoveries ranged between 95 and 101%. Graphical abstract Schematic presentation of an electrochemical sensor that was fabricated by electrodeposition of the metal-organic framework (MOF) of copper(II)-1,3,5-benzenetricarboxylic acid (Cu-BTC) onto the surface of electroreduced graphene oxide (ERGO) modified glassy carbon electrode (GCE). It was applied to sensitive and selective detection of 2,4,6-trinitrophenol (TNP).
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Affiliation(s)
- Yong Wang
- College of Chemistry, Nanchang University, Nanchang, 330031, China.
| | - Wei Cao
- College of Chemistry, Nanchang University, Nanchang, 330031, China
| | - Luyao Wang
- College of Chemistry, Nanchang University, Nanchang, 330031, China
| | - Qianfen Zhuang
- College of Chemistry, Nanchang University, Nanchang, 330031, China
| | - Yongnian Ni
- College of Chemistry, Nanchang University, Nanchang, 330031, China
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12
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Zhao J, Pan X, Sun X, Pan W, Yu G, Wang J. Detection of metronidazole in honey and metronidazole tablets using carbon dots-based sensor via the inner filter effect. LUMINESCENCE 2018. [DOI: 10.1002/bio.3467] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Jianru Zhao
- College of Chemical and Pharmaceutical Sciences; Qingdao Agricultural University; Qingdao P. R. China
| | - Xiaohua Pan
- College of Chemical and Pharmaceutical Sciences; Qingdao Agricultural University; Qingdao P. R. China
| | - Xiaobo Sun
- College of Chemical and Pharmaceutical Sciences; Qingdao Agricultural University; Qingdao P. R. China
| | - Wei Pan
- College of Chemical and Pharmaceutical Sciences; Qingdao Agricultural University; Qingdao P. R. China
| | - Guifeng Yu
- College of Chemical and Pharmaceutical Sciences; Qingdao Agricultural University; Qingdao P. R. China
| | - Jinping Wang
- College of Chemical and Pharmaceutical Sciences; Qingdao Agricultural University; Qingdao P. R. China
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13
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Tursynbolat S, Bakytkarim Y, Huang J, Wang L. Ultrasensitive electrochemical determination of metronidazole based on polydopamine/carboxylic multi-walled carbon nanotubes nanocomposites modified GCE. J Pharm Anal 2017; 8:124-130. [PMID: 29736299 PMCID: PMC5934733 DOI: 10.1016/j.jpha.2017.11.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 11/05/2017] [Accepted: 11/16/2017] [Indexed: 11/17/2022] Open
Abstract
An ultrasensitive electrochemical sensor based on polydopamine/carboxylic multi-walled carbon nanotubes (MWCNTs−COOH) nanocomposites modified glassy carbon electrode (GCE) was presented in this work, which has been developed for highly selective and highly sensitive determination of an antimicrobial drug, metronidazole. The preparation of polydopamine/MWCNTs–COOH nanocomposites/GCE sensor is simple and possesses high reproducible, where polydopamine can be coated on the surface of MWCNTs–COOH via a simple electropolymerization process. Under optimized conditions, the proposed sensor showed ultrasensitive determination for metronidazole with a wide linear detection range from 5 to 5000 µmol/dm3 and a low detection limit of 0.25 µmol/dm3 (S/N = 3). Moreover, the proposed sensor has been successfully applied for the quantitative determination of metronidazole in real drug samples. This work may provide a novel and effective analytical platform for determination of metronidazole in application of real pharmaceutical and biological samples analysis.
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Affiliation(s)
- Satar Tursynbolat
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Yrysgul Bakytkarim
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Jianzhi Huang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Lishi Wang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
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14
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Voltammetric determination of insecticide thiodicarb through its electrochemical reduction using novel solid amalgam electrode fabricated with silver nanoparticles. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.06.056] [Citation(s) in RCA: 7] [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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15
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Huang J, Shen X, Wang R, Zeng Q, Wang L. A highly sensitive metronidazole sensor based on a Pt nanospheres/polyfurfural film modified electrode. RSC Adv 2017. [DOI: 10.1039/c6ra25106d] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
A sensitively electrochemical metronidazole sensor basing on a Pt nanospheres/polyfurfural modified glassy carbon electrode.
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Affiliation(s)
- Jianzhi Huang
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510641
- People's Republic of China
| | - Xiaolei Shen
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510641
- People's Republic of China
| | - Ruili Wang
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510641
- People's Republic of China
| | - Qiang Zeng
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510641
- People's Republic of China
- State Key Laboratory of Pulp and Paper Engineering
| | - Lishi Wang
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510641
- People's Republic of China
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16
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Sensing of picric acid with a glassy carbon electrode modified with CuS nanoparticles deposited on nitrogen-doped reduced graphene oxide. Mikrochim Acta 2016. [DOI: 10.1007/s00604-016-1883-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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17
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Jaklová Dytrtová J, Jakl M, Nováková K, Navrátil T, Šádek V. Binding abilities of copper to phospholipids and transport of oxalate. MONATSHEFTE FUR CHEMIE 2014. [DOI: 10.1007/s00706-014-1385-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Determination of 5-nitroindazole using silver solid amalgam electrode. MONATSHEFTE FUR CHEMIE 2014. [DOI: 10.1007/s00706-014-1346-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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19
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Krejčová Z, Barek J, Vyskočil V. Voltammetric Determination of Nitrofurantoin at a Mercury Meniscus Modified Silver Solid Amalgam Electrode. ELECTROANAL 2014. [DOI: 10.1002/elan.201400410] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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20
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Electrochemical determination of basic biochemical properties of enzyme enterokinase. MONATSHEFTE FUR CHEMIE 2014. [DOI: 10.1007/s00706-014-1309-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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21
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Biçer E, Özdemir S, Güder A, Korkmaz H. Investigation of the interaction of resveratrol with free radical diphenylpicrylhydrazyl at different pHs by cyclic voltammetry: Correlation between antioxidant activity and association complex constant. RUSS J ELECTROCHEM+ 2014. [DOI: 10.1134/s1023193514080023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Yang G, Zhao F, Zeng B. Magnetic entrapment for fast and sensitive determination of metronidazole with a novel magnet-controlled glassy carbon electrode. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.04.162] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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23
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Sensitive voltammetric method for determination of herbicide triasulfuron using silver solid amalgam electrode. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.09.077] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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24
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Gu Y, Liu W, Chen R, Zhang L, Zhang Z. β-Cyclodextrin-Functionalized Gold Nanoparticles/Poly(L-cysteine) Modified Glassy Carbon Electrode for Sensitive Determination of Metronidazole. ELECTROANAL 2013. [DOI: 10.1002/elan.201200529] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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25
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Junqueira JR, de Araujo WR, Salles MO, Paixão TR. Flow injection analysis of picric acid explosive using a copper electrode as electrochemical detector. Talanta 2013; 104:162-8. [DOI: 10.1016/j.talanta.2012.11.036] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 11/14/2012] [Accepted: 11/16/2012] [Indexed: 10/27/2022]
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26
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Deýlová D, Vyskočil V, Barek J, Economou A. Bismuth film electrode at a silver solid amalgam substrate as a new tool for voltammetric determination of electrochemically reducible organic compounds. Talanta 2012. [DOI: 10.1016/j.talanta.2012.07.044] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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27
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Bandžuchová L, Šelešovská R, Navrátil T, Chýlková J. Silver Solid Amalgam Electrode as a Tool for Monitoring the Electrochemical Reduction of Hydroxocobalamin. ELECTROANAL 2012. [DOI: 10.1002/elan.201200365] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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28
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Deýlová D, Vyskočil V, Barek J. Voltammetric determination of 2-amino-6-nitrobenzothiazole at two different silver amalgam electrodes. Electrochim Acta 2012. [DOI: 10.1016/j.electacta.2011.12.033] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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29
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Gál M, Sokolová R, Kolivoška V, Morovská Turoňová A, Ambrová M, Híveš J. Metronidazole radical anion formation studied by means of electrochemical impedance spectroscopy. ACTA ACUST UNITED AC 2012. [DOI: 10.1135/cccc2011113] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Radiosensitizers belong to the most important class of the cancerostatic drugs. The electrochemical transfer of the first electron to the cytotoxic radiosensitizer Metronidazole (MET) and MET radical anion formation in aprotic medium was studied by means of electrochemical impedance spectroscopy. The heterogeneous electron transfer rate constant for the first reduction of MET (radical anion production) k0 for the redox couple was determined. Similarly, the diffusion coefficient of MET in dimethylformamide was also calculated by impedance measurements using expression for Warburg coefficient and Warburg plot. Moreover, the equivalent circuit for the redox couple MET/MET•– was proposed and its parameters were evaluated using a non-linear least square fitting. Our results, from the electrochemical point of view, also confirm the suitability of MET for the effective treatment of selected types of the cancer.
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Šelešovská R, Bandžuchová L, Navrátil T, Chýlková J. Voltammetric determination of leucovorin using silver solid amalgam electrode. Electrochim Acta 2012. [DOI: 10.1016/j.electacta.2011.11.071] [Citation(s) in RCA: 32] [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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Deýlová D, Yosypchuk B, Vyskočil V, Barek J. Voltammetric Determination of 4-Nitrophenol and 5-Nitrobenzimidazole Using Different Types of Silver Solid Amalgam Electrodes - A Comparative Study. ELECTROANAL 2011. [DOI: 10.1002/elan.201100067] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Pontié M, Thouand G, De Nardi F, Tapsoba I, Lherbette S. Antipassivating Electrochemical Process of Glassy Carbon Electrode (GCE) Dedicated to the Oxidation of Nitrophenol Compounds. ELECTROANAL 2011. [DOI: 10.1002/elan.201100082] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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