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Xia N, Gao F, Zhang J, Wang J, Huang Y. Overview on the Development of Electrochemical Immunosensors by the Signal Amplification of Enzyme- or Nanozyme-Based Catalysis Plus Redox Cycling. Molecules 2024; 29:2796. [PMID: 38930860 DOI: 10.3390/molecules29122796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2024] [Revised: 05/31/2024] [Accepted: 06/06/2024] [Indexed: 06/28/2024] Open
Abstract
Enzyme-linked electrochemical immunosensors have attracted considerable attention for the sensitive and selective detection of various targets in clinical diagnosis, food quality control, and environmental analysis. In order to improve the performances of conventional immunoassays, significant efforts have been made to couple enzyme-linked or nanozyme-based catalysis and redox cycling for signal amplification. The current review summarizes the recent advances in the development of enzyme- or nanozyme-based electrochemical immunosensors with redox cycling for signal amplification. The special features of redox cycling reactions and their synergistic functions in signal amplification are discussed. Additionally, the current challenges and future directions of enzyme- or nanozyme-based electrochemical immunosensors with redox cycling are addressed.
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Affiliation(s)
- Ning Xia
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Fengli Gao
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Jiwen Zhang
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Jiaqiang Wang
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Yaliang Huang
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China
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2
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Yoon N, Jung Y, Kim G, Kwon J, Yang H. Low-interference and sensitive electrochemical detection of glucose and lactate using boron-doped diamond electrode and electron mediator menadione. ANAL SCI 2024; 40:853-861. [PMID: 38246930 DOI: 10.1007/s44211-023-00497-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 12/11/2023] [Indexed: 01/23/2024]
Abstract
To minimize background interference in electrochemical enzymatic biosensors employing electron mediators, it is essential for the electrochemical oxidation of electroactive interfering species (ISs), such as ascorbic acid (AA), to proceed slowly, and for the redox reactions between electron mediators and ISs to occur at a low rate. In this study, we introduce a novel combination of a working electrode and an electron mediator that effectively mitigates interference effects. Compared to commonly used electrodes such as Au, glassy carbon, and indium tin oxide (ITO), boron-doped diamond (BDD) electrodes demonstrate significantly lower anodic current (i.e., lower background levels) in the presence of AA. Additionally, menadione (MD) exhibits notably slower reactivity with AA compared to other electron mediators such as Ru(NH3)63+, 4-amino-1-naphthol, and 1,4-naphthoquinone, primarily due to the lower formal potential of MD compared to AA. This synergistic combination of BDD electrode and MD is effectively applied in three biosensors: (i) glucose detection using electrochemical-enzymatic (EN) redox cycling, (ii) glucose detection using electrochemical-enzymatic-enzymatic (ENN) redox cycling, and (iii) lactate detection using ENN redox cycling. Our developed approach significantly outperforms the combination of ITO electrode and MD in minimizing IS interference. Glucose in artificial serum can be detected with detection limits of ~ 20 μM and ~ 3 μM in EN and ENN redox cycling, respectively. Furthermore, lactate in human serum can be detected with a detection limit of ~ 30 μM. This study demonstrates sensitive glucose and lactate detection with minimal interference, eliminating the need for (bio)chemical agents to remove interfering species.
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Affiliation(s)
- Nakyeong Yoon
- Department of Chemistry, Pusan National University, Busan, 46241, Korea
| | - Youngjin Jung
- Department of Chemistry, Pusan National University, Busan, 46241, Korea
| | - Gyeongho Kim
- Department of Chemistry, Pusan National University, Busan, 46241, Korea
| | - Jungwook Kwon
- Department of Chemistry, Pusan National University, Busan, 46241, Korea
| | - Haesik Yang
- Department of Chemistry, Pusan National University, Busan, 46241, Korea.
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3
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Zhou L, Huber DE, van Antwerp B, Pennathur S. Electrooxidation of Phenol on Polyelectrolyte Modified Carbon Electrodes for Use in Insulin Pump Infusion Sets. J Diabetes Sci Technol 2024; 18:625-634. [PMID: 36112811 PMCID: PMC11089874 DOI: 10.1177/19322968221123083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Many type 1 diabetes patients using continuous subcutaneous insulin infusion (CSII) suffer from the phenomenon of unexplained hypoglycemia or "site loss." Site loss is hypothesized to be caused by toxic excipients, for example, phenolic compounds within insulin formulations that are used as preservatives and stabilizers. Here, we develop a bioinspired polyelectrolyte-modified carbon electrode for effective electrooxidative removal of phenol from insulin and eventual incorporations into an infusion set of a CSII device. METHODS We modified a carbon screen printed electrode (SPE) with poly-L-lysine (PLL) to avoid passivation due to polyphenol deposition while still removing phenolic compounds from insulin injections. We characterized these electrodes using scanning electron microscopy (SEM) and electrochemical impedance spectroscopy (EIS) and compared their data with data from bare SPEs. Furthermore, we performed electrochemical measurements to determine the extent of passivation, and high-performance liquid chromatography (HPLC) measurements to confirm both the removal of phenol and the integrity of insulin after phenol removal. RESULTS Voltammetry measurements show that electrode passivation due to polyphenol deposition is reduced by a factor of 2X. HPLC measurements confirm a 10x greater removal of phenol by our modified electrodes relative to bare electrodes. CONCLUSION Using bioinspired polyelectrolytes to modify a carbon electrode surface aids in the electrooxidation of phenolic compounds from insulin and is a step toward integration within an infusion set for mitigating site loss.
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Affiliation(s)
- Lingyun Zhou
- Department of Mechanical Engineering, University of California, Santa Barbara, Santa Barbara, CA, USA
| | - David E. Huber
- Department of Mechanical Engineering, University of California, Santa Barbara, Santa Barbara, CA, USA
| | | | - Sumita Pennathur
- Department of Mechanical Engineering, University of California, Santa Barbara, Santa Barbara, CA, USA
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Park S, Kwak DE, Haque AMJ, Lee NS, Yoon YH, Yang H. Phenolic Tyrosinase Substrate with a Formal Potential Lower than That of Phenol to Obtain a Sensitive Electrochemical Immunosensor. ACS Sens 2022; 7:790-796. [PMID: 35195397 DOI: 10.1021/acssensors.1c02346] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The high and selective catalytic activities of tyrosinase (Tyr) have frequently led to its application in sensitive biosensors. However, in affinity-based biosensors, the use of Tyr as a catalytic label is less common compared to horseradish peroxidase and alkaline phosphatase owing to the fact that phenolic Tyr substrates have yet to be investigated in detail. Herein, four phenolic compounds that have lower formal potentials than phenol were examined for their applicability as Tyr substrates, and three reducing agents were examined as potential strong reducing agents for electrochemical-chemical (EC) redox cycling involving an electrode, a Tyr product, and a reducing agent. The combination of 4-methoxyphenol (MP) and ammonia-borane (AB) allows for (i) a high electrochemical signal level owing to rapid EC redox cycling and (ii) a low electrochemical background level owing to the slow oxidation of AB at a low applied potential and no reaction between MP and AB. When this combination was applied to an electrochemical immunosensor for parathyroid hormone (PTH) detection, a detection limit of 2 pg/mL was obtained. This detection limit is significantly lower than that obtained when a combination of phenol and AB was employed (300 pg/mL). It was also found that the developed immunosensor works well in PTH detection in clinical serum samples. This new phenolic substrate could therefore pave the way for Tyr to be more commonly used as a catalytic label in affinity-based biosensors.
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Affiliation(s)
- Seonhwa Park
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Da-eun Kwak
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Al-Monsur Jiaul Haque
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | | | | | - Haesik Yang
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
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5
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Congur G, Gül ÜD. Electrochemical Detection of Phenol Removal by using a Biosorbent Originated Factory Solid Waste. ELECTROANAL 2021. [DOI: 10.1002/elan.202100520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Gulsah Congur
- Bilecik Seyh Edebali University Vocational School of Health Services 11230 Bilecik Turkey
- Bilecik Seyh Edebali University Biotechnology Application and Research Center 11230 Bilecik Turkey
| | - Ülküye Dudu Gül
- Bilecik Seyh Edebali University Biotechnology Application and Research Center 11230 Bilecik Turkey
- Bilecik Seyh Edebali University Faculty of Engineering . Department of Bioengineering 11230 Bilecik Turkey
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Yan K, Wu J, Ji W, Wu J, Zhang J. Integration of redox cycling in a photoelectrochemical sensing platform for tyrosinase activity evaluation. Electrochem commun 2019. [DOI: 10.1016/j.elecom.2019.106555] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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Guo L, Du H, Zhao H, Li J. Amplified Electrochemical Response of Phenol by Oxygenation of Tyrosinase Coupling with Electrochemical‐chemical‐chemical Redox Cycle. ELECTROANAL 2019. [DOI: 10.1002/elan.201900174] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Liping Guo
- College of Chemistry and Materials Science, Shaanxi Provincial Key Laboratory of Electroanalytical ChemistryNorthwest University Xi'an 710069 P. R. China
| | - Hui Du
- College of Chemistry and Materials Science, Shaanxi Provincial Key Laboratory of Electroanalytical ChemistryNorthwest University Xi'an 710069 P. R. China
| | - Huiying Zhao
- College of Chemistry and Materials Science, Shaanxi Provincial Key Laboratory of Electroanalytical ChemistryNorthwest University Xi'an 710069 P. R. China
| | - Jian Li
- College of Chemistry and Materials Science, Shaanxi Provincial Key Laboratory of Electroanalytical ChemistryNorthwest University Xi'an 710069 P. R. China
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Yan K, Ji W, Zhu Y, Chen F, Zhang J. Photofuel cell coupling with redox cycling as a highly sensitive and selective self-powered sensing platform for the detection of tyrosinase activity. Chem Commun (Camb) 2019; 55:12040-12043. [DOI: 10.1039/c9cc05649a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Redox cycling is successfully integrated in a photofuel cell to provide an amplified self-powered sensing signal for the specific detection of tyrosinase activity.
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Affiliation(s)
- Kai Yan
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education)
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
- P. R. China
| | - Weihao Ji
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education)
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
- P. R. China
| | - Yuhan Zhu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education)
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
- P. R. China
| | - Fang Chen
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education)
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
- P. R. China
| | - Jingdong Zhang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education)
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
- P. R. China
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Benvidi A, Nikmanesh M, Dehghan Tezerjani M, Jahanbani S, Abdollahi M, Akbari A, Rezaeipoor-Anari A. A comparative study of various electrochemical sensors for hydrazine detection based on imidazole derivative and different nano-materials of MCM-41, RGO and MWCNTs: Using net analyte signal (NAS) for simultaneous determination of hydrazine and phenol. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.01.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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10
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Marková E, Kotik M, Křenková A, Man P, Haudecoeur R, Boumendjel A, Hardré R, Mekmouche Y, Courvoisier-Dezord E, Réglier M, Martínková L. Recombinant Tyrosinase from Polyporus arcularius: Overproduction in Escherichia coli, Characterization, and Use in a Study of Aurones as Tyrosinase Effectors. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:2925-2931. [PMID: 26961852 DOI: 10.1021/acs.jafc.6b00286] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Tyrosinases act in the development of organoleptic properties of tea, raisins, etc., but also cause unwanted browning of fruits, vegetables, and mushrooms. The tyrosinase from Agaricus bisporus has been used as a model to study tyrosinase inhibitors, which are also indispensable in the treatment of skin pigmentation disorders. However, this model has disadvantages such as side enzyme activities and the presence of multiple isoenzymes. Therefore, we aimed to introduce a new tyrosinase model. The pro-tyrosinase from Polyporus arcularius was overproduced in Escherichia coli. Trypsin digestion led to a cleavage after R388 and hence enzyme activation. The tyrosinase was a homodimer and transformed L-DOPA and tert-butylcatechol preferentially. Various aurons were examined as effectors of this enzyme. 2'- and 3'-hydroxyaurones acted as its activators and 2',4'-dihydroxyaurone as an inhibitor, whereas 4'-hydroxyaurones were its substrates. The enzyme is a promising model for tyrosinase effector studies, being a single isoenzyme and void of side enzyme activities.
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Affiliation(s)
- Eva Marková
- Institute of Microbiology, Czech Academy of Sciences , Vídeňská 1083, 142 20 Prague, Czech Republic
- Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague , Technická 3, 166 28 Prague, Czech Republic
| | - Michael Kotik
- Institute of Microbiology, Czech Academy of Sciences , Vídeňská 1083, 142 20 Prague, Czech Republic
| | - Alena Křenková
- Institute of Microbiology, Czech Academy of Sciences , Vídeňská 1083, 142 20 Prague, Czech Republic
| | - Petr Man
- Institute of Microbiology, Czech Academy of Sciences , Vídeňská 1083, 142 20 Prague, Czech Republic
| | - Romain Haudecoeur
- Université Grenoble Alpes, CNRS, DPM UMR 5063 , 38041 Grenoble, France
| | - Ahcène Boumendjel
- Université Grenoble Alpes, CNRS, DPM UMR 5063 , 38041 Grenoble, France
| | - Renaud Hardré
- Aix Marseille Université, Centrale Marseille, CNRS, ISm2 UMR 7313 , 13397 Marseille, France
| | - Yasmina Mekmouche
- Aix Marseille Université, Centrale Marseille, CNRS, ISm2 UMR 7313 , 13397 Marseille, France
| | | | - Marius Réglier
- Aix Marseille Université, Centrale Marseille, CNRS, ISm2 UMR 7313 , 13397 Marseille, France
| | - Ludmila Martínková
- Institute of Microbiology, Czech Academy of Sciences , Vídeňská 1083, 142 20 Prague, Czech Republic
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11
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Fang CS, Oh KH, Oh A, Lee K, Park S, Kim S, Park JK, Yang H. An ultrasensitive and incubation-free electrochemical immunosensor using a gold-nanocatalyst label mediating outer-sphere-reaction-philic and inner-sphere-reaction-philic species. Chem Commun (Camb) 2016; 52:5884-7. [PMID: 27052458 DOI: 10.1039/c6cc00353b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
This communication reports a new nanocatalytic scheme based on the facts that the redox reaction between a highly outer-sphere-reaction-philic (OSR-philic) species and a highly inner-sphere-reaction-philic (ISR-philic) species is slow and that an OSR- and ISR-philic Au-nanocatalyst label can mediate the two different types of redox species. This scheme allows highly sensitive and incubation free detection of creatine kinase-MB.
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Affiliation(s)
- Chiew San Fang
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea.
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12
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Martínková L, Kotik M, Marková E, Homolka L. Biodegradation of phenolic compounds by Basidiomycota and its phenol oxidases: A review. CHEMOSPHERE 2016; 149:373-382. [PMID: 26874626 DOI: 10.1016/j.chemosphere.2016.01.022] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 12/09/2015] [Accepted: 01/06/2016] [Indexed: 06/05/2023]
Abstract
The phylum Basidiomycota include organisms with enormous bioremediation potential. A variety of processes were proposed at the lab scale for using these fungi and their phenol oxidases in the degradation of phenolics. Here we present a survey of this topic using literature published mostly over the last 10 years. First, the sources of the enzymes are summarized. The laccase and tyrosinase were mainly from Trametes versicolor and Agaricus bisporus, respectively. Recently, however, new promising wild-type producers of the enzymes have emerged and a number of recombinant strains were also constructed, based mainly on yeasts or Aspergillus strains as hosts. The next part of the study summarizes the enzyme and whole-cell applications for the degradation of phenols, polyphenols, cresols, alkylphenols, naphthols, bisphenols and halogenated (bis)phenols in model mixtures or real wastewaters from the food, paper and coal industries, or municipal and hospital sewage. The enzymes were applied as free (crude or purified) enzymes or as enzymes immobilized in various supports or CLEAs, and optionally recycled or used in continuous mode. Alternatively, growing cultures or harvested mycelia were used instead. The products, which were characterized as quinones and their polymers in some cases, could be eliminated by filtration, flocculation or adsorption onto chitosan. The purity of a treated wastewater was monitored using a sensitive aquatic organism. It is concluded that low-cost sources of these enzymes should be searched for and the benefits of enzymatic, biological and physico-chemical methods could be combined to make the processes fit for industrial use.
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Affiliation(s)
- L Martínková
- Laboratory of Biotransformation, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague, Czech Republic.
| | - M Kotik
- Laboratory of Biotransformation, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague, Czech Republic
| | - E Marková
- Laboratory of Biotransformation, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague, Czech Republic; Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Technická 3, CZ-166 28 Prague, Czech Republic
| | - L Homolka
- Laboratory of Environmental Microbiology, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague, Czech Republic
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Liu L, Chen X, Liu K, He M, Wang G, Chang X, Fang Y. Formation of An Ionic PTCA-β-CDNH2 Complex and Its Application for Phenol Sensing in Aqueous Phase. ACS APPLIED MATERIALS & INTERFACES 2015; 7:21364-21372. [PMID: 26348064 DOI: 10.1021/acsami.5b06011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
On the basis of proton transfer in aqueous phase, we prepared a water-soluble and highly fluorescent ionic complex of 3,4,9,10-perylene tetracarboxylic acid (PTCA) and 6-deoxy-6-amino-β-CD (β-CDNH2) and studied its fluorescence behavior. It was found that the fluorescence emission of the complex is sensitive and selective to the presence of trace amount of toxic phenolic compounds, in particular phenol, which is crucial for water quality control. The detection limit (DL) of the method to the analyte is ~0.03 μM, a lowest value reported in literatures for similar techniques. Interestingly, the detection at an unprecedented subnanogram (DL, ~0.12 ng/cm(2)) level can also be conducted in a visualized manner, which may provide a simple and low-cost protocol for on-site and real-time detection of the analyte. Moreover, the complex is humidity sensitive in dry state, and its color changes from bright yellow to bright green when exposed to wet vapor. Unlike other PTCA bisimide derivatives, preparation of the ionic complex of PTCA/β-CDNH2 is simple and avoids complicated synthetic burden. Furthermore, introduction of methanol into the aqueous solution of the complex resulted in aggregation as indicated by solution color change and proved by transmission electron microscopy and dynamic light scattering studies, which explains why the compound in dry state is sensitive to the presence of water and water vapor. X-ray diffraction, UV-vis, and fluorescence studies uncovered the H-packing nature of the structure of the aggregate.
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Affiliation(s)
- Lingling Liu
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University , Xi'an 710119, People's Republic of China
| | - Xiangli Chen
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University , Xi'an 710119, People's Republic of China
| | - Kaiqiang Liu
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University , Xi'an 710119, People's Republic of China
| | - Meixia He
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University , Xi'an 710119, People's Republic of China
| | - Gang Wang
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University , Xi'an 710119, People's Republic of China
| | - Xingmao Chang
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University , Xi'an 710119, People's Republic of China
| | - Yu Fang
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University , Xi'an 710119, People's Republic of China
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Mahmoudi Moghaddam H, Beitollahi H, Tajik S, Sheikhshoaie I, Biparva P. Fabrication of novel TiO2 nanoparticles/Mn(III) salen doped carbon paste electrode: application as electrochemical sensor for the determination of hydrazine in the presence of phenol. ENVIRONMENTAL MONITORING AND ASSESSMENT 2015; 187:407. [PMID: 26045039 DOI: 10.1007/s10661-015-4629-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Accepted: 05/19/2015] [Indexed: 06/04/2023]
Abstract
Hydrazine and phenol are two important environmental pollutants. In this work, an electrochemical sensor for the selective and sensitive detection of hydrazine in presence of phenol was developed by the bulk modification of carbon paste electrode (CPE) with TiO2 nanoparticles and Mn(III) salen. Large peak separation, good sensitivity, and stability allow this modified electrode to analyze hydrazine individually and simultaneously along with phenol. Applying square wave voltammetry (SWV), a linear dynamic range of 3 × 10(-8)-4.0 × 10(-4) M with detection limit of 10.0 nM was obtained for hydrazine. Finally, the proposed method was applied to the determination of hydrazine and phenol in some real samples.
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Affiliation(s)
- Hadi Mahmoudi Moghaddam
- Environmental Health Engineering Research Center and Department of Environmental Health, School of Public Health, Kerman University of Medical Sciences, Kerman, Iran,
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15
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Park S, Kim J, Ock H, Dutta G, Seo J, Shin EC, Yang H. Sensitive electrochemical detection of vaccinia virus in a solution containing a high concentration of l-ascorbic acid. Analyst 2015; 140:5481-7. [DOI: 10.1039/c5an01086a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A new redox cycling scheme allows sensitive detection of vaccinia virus in a solution containing a high concentration of l-ascorbic acid.
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Affiliation(s)
- Seonhwa Park
- Department of Chemistry and Chemistry Institute for Functional Materials
- Pusan National University
- Busan 609-735
- Korea
| | - Jihye Kim
- Graduate School of Medical Science & Engineering
- Korea Advanced Institute of Science and Technology
- Daejeon
- Korea
| | - Hwiseok Ock
- Department of Chemistry and Chemistry Institute for Functional Materials
- Pusan National University
- Busan 609-735
- Korea
| | - Gorachand Dutta
- Department of Chemistry and Chemistry Institute for Functional Materials
- Pusan National University
- Busan 609-735
- Korea
| | - Jeongwook Seo
- Department of Chemistry and Chemistry Institute for Functional Materials
- Pusan National University
- Busan 609-735
- Korea
| | - Eui-Cheol Shin
- Graduate School of Medical Science & Engineering
- Korea Advanced Institute of Science and Technology
- Daejeon
- Korea
| | - Haesik Yang
- Department of Chemistry and Chemistry Institute for Functional Materials
- Pusan National University
- Busan 609-735
- Korea
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