1
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Brycht M, Poltorak L, Baluchová S, Sipa K, Borgul P, Rudnicki K, Skrzypek S. Electrochemistry as a Powerful Tool for Investigations of Antineoplastic Agents: A Comprehensive Review. Crit Rev Anal Chem 2024; 54:1017-1108. [PMID: 35968923 DOI: 10.1080/10408347.2022.2106117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
Cancer is most frequently treated with antineoplastic agents (ANAs) that are hazardous to patients undergoing chemotherapy and the healthcare workers who handle ANAs in the course of their duties. All aspects related to hazardous oncological drugs illustrate that the monitoring of ANAs is essential to minimize the risks associated with these drugs. Among all analytical techniques used to test ANAs, electrochemistry holds an important position. This review, for the first time, comprehensively describes the progress done in electrochemistry of ANAs by means of a variety of bare or modified (bio)sensors over the last four decades (in the period of 1982-2021). Attention is paid not only to the development of electrochemical sensing protocols of ANAs in various biological, environmental, and pharmaceutical matrices but also to achievements of electrochemical techniques in the examination of the interactions of ANAs with deoxyribonucleic acid (DNA), carcinogenic cells, biomimetic membranes, peptides, and enzymes. Other aspects, including the enantiopurity studies, differentiation between single-stranded and double-stranded DNA without using any label or tag, studies on ANAs degradation, and their pharmacokinetics, by means of electrochemical techniques are also commented. Finally, concluding remarks that underline the existence of a significant niche for the basic electrochemical research that should be filled in the future are presented.
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Affiliation(s)
- Mariola Brycht
- Faculty of Chemistry, Department of Inorganic and Analytical Chemistry, University of Lodz, Lodz, Poland
| | - Lukasz Poltorak
- Faculty of Chemistry, Department of Inorganic and Analytical Chemistry, University of Lodz, Lodz, Poland
| | - Simona Baluchová
- Faculty of Science, Department of Analytical Chemistry, UNESCO Laboratory of Environmental Electrochemistry, Charles University, Prague 2, Czechia
- Department of Precision and Microsystems Engineering, Delft University of Technology, Delft, The Netherlands
| | - Karolina Sipa
- Faculty of Chemistry, Department of Inorganic and Analytical Chemistry, University of Lodz, Lodz, Poland
| | - Paulina Borgul
- Faculty of Chemistry, Department of Inorganic and Analytical Chemistry, University of Lodz, Lodz, Poland
| | - Konrad Rudnicki
- Faculty of Chemistry, Department of Inorganic and Analytical Chemistry, University of Lodz, Lodz, Poland
| | - Sławomira Skrzypek
- Faculty of Chemistry, Department of Inorganic and Analytical Chemistry, University of Lodz, Lodz, Poland
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2
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Alanazi AZ, Alhazzani K, El-Wekil MM, Ali AMBH, Darweesh M, Ibrahim H. A novel disposable ultrasensitive sensor based on nanosized ceria uniformly loaded carbon nanofiber nanoceramic film wrapped on pencil graphite rods for electrocatalytic monitoring of a tyrosine kinase inhibitor capmatinib. Talanta 2024; 279:126610. [PMID: 39068826 DOI: 10.1016/j.talanta.2024.126610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 06/12/2024] [Accepted: 07/23/2024] [Indexed: 07/30/2024]
Abstract
For the first time, we introduce a novel disposable and ultrasensitive sensing electrode made up of nanosized ceria uniformly loaded carbon nanofibers (CeNPs@CNF) sol-gel nanoceramic film (CF) wrapped on eco-friendly and inexpensive pencil graphite rods (PGRs) to explore their electro-catalytic detection of the anticancer drug capmatinib (CMB). The as-prepared CeNPs@CNF hybrid nanocomposite was described by XRD, SEM, TEM, HRTEM, and EDX analysis. The CV study clearly demonstrated that, the disposable CeNPs@CNF-CF/PGRE sensor exhibited excellent redox activities in the ideal probe [Fe(CN)6]3-/4-. Due to the outstanding electrochemical properties, larger electrochemically active surface area, and tremendous electro-catalytic activity of CeNPs@CNF, the reduction current of CMB on the CeNPs@CNF-CF/PGRE sensor is considerably higher than that of bare PGRE. The detection conditions, such as supporting electrolyte, pH of the buffer solution, amount of modifier, adsorption potential, and time, were studied and optimized. The sensing platform demonstrated high sensitivity (1.2 μA nM-1 cm-2), an ultralow detection limit (0.6 nM), and a wide linear range of 2.0 nM-400 nM of CMB compared to the bare PGRE. Additionally, the CeNPs@CNF-CF/PGRE sensor showed high selectivity, stability, and simple operation, which provided a promising alternative tool for fast detection of CMB in human body fluids with good recoveries.
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Affiliation(s)
- Ahmed Z Alanazi
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Khalid Alhazzani
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Mohamed M El-Wekil
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Al-Montaser Bellah H Ali
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Mahmoud Darweesh
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Hossieny Ibrahim
- Department of Chemistry, Faculty of Science, Assiut University, Assiut, 71516, Egypt; School of Biotechnology, Badr University in Assiut, Assiut, 2014101, Egypt.
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3
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Yu H, Hu M, Wang X, Wang X, Xun L, Liu H. Rapid Detection of the Anti-Tumor Drug Etoposide in Biological Samples by Using a Nanoporous-Gold-Based Electrochemical Sensor. Molecules 2024; 29:1060. [PMID: 38474572 DOI: 10.3390/molecules29051060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 02/21/2024] [Accepted: 02/25/2024] [Indexed: 03/14/2024] Open
Abstract
Monitoring etoposide is important due to its wide usage in anti-tumor therapy; however, the commonly used HPLC method is expensive and often requires complicated extraction and detection procedures. Electrochemical analysis has great application prospects because of its rapid response and high specificity, sensitivity, and efficiency with low cost and high convenience. In this study, we constructed a nanoporous gold (NPG)-modified GCE for the detection of etoposide. The electrochemical oxidation of etoposide by NPG caused a sensitive current peak at +0.27 V with good reproductivity in 50 mM of phosphate buffer (pH 7.4). The relationship between etoposide concentration and peak current was linear in the range between 0.1 and 20 μM and between 20 and 150 μM, with a detection sensitivity of 681.8 μA mM-1 cm-2 and 197.2 μA mM-1 cm-2, respectively, and a limit of detection (LOD) reaching 20 nM. The electrode had a good anti-interference ability to several common anions and cations. Spiked recovery tests in serum, urine, and fermentation broth verified the excellent performance of the sensor in terms of sensitivity, reproducibility, and specificity. This may provide a promising tool for the detection of etoposide in biological samples.
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Affiliation(s)
- Huiyuan Yu
- State Key Laboratory of Microbial Technology, Shandong University, 72 Binhai Road, Qingdao 266237, China
| | - Mengjie Hu
- State Key Laboratory of Microbial Technology, Shandong University, 72 Binhai Road, Qingdao 266237, China
| | - Xiaolei Wang
- State Key Laboratory of Microbial Technology, Shandong University, 72 Binhai Road, Qingdao 266237, China
| | - Xia Wang
- State Key Laboratory of Microbial Technology, Shandong University, 72 Binhai Road, Qingdao 266237, China
| | - Luying Xun
- State Key Laboratory of Microbial Technology, Shandong University, 72 Binhai Road, Qingdao 266237, China
- School of Molecular Biosciences, Washington State University, Pullman, WA 99164-7520, USA
| | - Honglei Liu
- State Key Laboratory of Microbial Technology, Shandong University, 72 Binhai Road, Qingdao 266237, China
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4
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Sedhu N, Jagadeesh Kumar J, Sivaguru P, Raj V. Electrochemical detection of riboflavin in pharmaceutical and food samples using in situ electropolymerized glycine coated pencil graphite electrode. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.117037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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5
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Chiorcea-Paquim AM, Oliveira-Brett AM. Electrochemistry of chemotherapeutic alkylating agents and their interaction with DNA. J Pharm Biomed Anal 2022; 222:115036. [DOI: 10.1016/j.jpba.2022.115036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 09/06/2022] [Accepted: 09/07/2022] [Indexed: 10/14/2022]
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6
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Ibrahim H, Temerk Y. Surface decoration of functionalized carbon black nanoparticles with nanosized gold particles for electrochemical sensing of diuretic spironolactone in patient plasma. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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7
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Recent Developments in Voltammetric Analysis of Pharmaceuticals Using Disposable Pencil Graphite Electrodes. Processes (Basel) 2022. [DOI: 10.3390/pr10030472] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
The even growing production of both well-known and new derivatives with pharmaceutical action involves the need for developing facile and reliable methods for the analysis of these compounds. Among the widely used instrumental techniques, the electrochemical ones are probably the simplest and the most rapid, also having good performance characteristics. However, the key tool in electroanalysis is the working electrode. Due to the inherent electrochemical and economic advantages of the pencil graphite electrode (PGE), the interest in its applicability in the analysis of different analytes has continuously increased in recent years. Thus, this paper aims to review the scientific reports published in the last 10 years on the use of the disposable eco- and user-friendly PGEs in the electroanalysis of compounds of pharmaceutical importance in different matrices. The PGE characteristics and designs (bare or modified with various types of materials), along with their applications and performance parameters (e.g., linear range, limit of detection, and reproducibility), will be discussed, and their advantages and limitations will be critically emphasized.
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Cetinkaya A, Karadurmus L, Kaya SI, Ozcelikay G, Ozkan SA. Electrochemical Sensing of Anticancer Drug Using New Electrocatalytic Approach. Top Catal 2022. [DOI: 10.1007/s11244-021-01536-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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9
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Multiplexed detection of aqueous Cd2+, Pb2+ and Cu2+ ions at mercury-on-graphene film modified electrode by DPASV. SENSING AND BIO-SENSING RESEARCH 2021. [DOI: 10.1016/j.sbsr.2021.100464] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
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10
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Bagheri Hariri M, Siavash Moakhar R, Sharifi Abdar P, Zargarnezhad H, Shone M, Rahmani SA, Moradi N, Niksefat V, Shayar Bahadori K, Dolati A. Facile and ultra-sensitive voltammetric electrodetection of Hg 2+ in aqueous media using electrodeposited AuPtNPs/ITO. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:2688-2700. [PMID: 34036981 DOI: 10.1039/d1ay00361e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this study, we have investigated the use of electrodeposited Au-Pt nanoparticles (AuPtNPs) on indium tin oxide (ITO) for the detection of Hg2+ heavy ions in water samples. The mechanism of AuPtNP electrocrystallization on ITO glass in an aqueous solution containing 0.5 mM HAuCl4 + 0.5 mM H2PtCl6 is described for the first time. The nucleation mechanism of monometallic AuNPs on ITO was found to be progressive; however, a transition from progressive to instantaneous was observed for bimetallic AuPtNPs at elevated overpotentials. The modified ITOs were then assessed for the electrodetection of Hg2+ in aqueous media. It was shown by differential pulse voltammetry (DPV) that the sensitivity of the constructed AuPtNPs/ITO electrode toward Hg2+ was about 2.08 μA nM-1. An approximate detection limit of 4.03 nM Hg2+ was achieved, which is below the permissible level of 30.00 nM Hg2+ in drinking water, according to the World Health Organization (WHO). Characterization of AuPt nanostructures was carried out by X-ray diffraction (XRD) patterns, scanning electron microscopy (SEM), and different electrochemical techniques (cyclic voltammetry (CV), chronoamperometry, and electrochemical impedance spectroscopy (EIS)). Our results indicate a good potential of a facile and robust electrochemical assembly for on-site detection of heavy metals in water samples.
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Affiliation(s)
- Mohiedin Bagheri Hariri
- Institute for Corrosion and Multiphase Technology, Department of Chemical and Biomolecular Engineering, Ohio University, Athens, Ohio 45701, USA.
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11
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Alizadeh T, Shojaeianfar M, Reza Ganjali M. Preparation of a New Copper/Mercury‐Based Amalgam Electrode with Minimal Mercury Content and Its Application for the Determination of Azathioprine in Biological Fluids. ChemistrySelect 2021. [DOI: 10.1002/slct.202000546] [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)
- Taher Alizadeh
- Department of Analytical Chemistry, Faculty of Chemistry University College of Science, University of Tehran Tehran, Iran, P.O. Box 14155-6455 Tehran Iran
| | - Moslem Shojaeianfar
- Department of Analytical Chemistry, Faculty of Chemistry University College of Science, University of Tehran Tehran, Iran, P.O. Box 14155-6455 Tehran Iran
| | - Mohammad Reza Ganjali
- Department of Analytical Chemistry, Faculty of Chemistry University College of Science, University of Tehran Tehran, Iran, P.O. Box 14155-6455 Tehran Iran
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12
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Bindewald EH, Angelo E, Kleinert E, Bergamini MF, Marcolino-Junior LH. Mercury isles in titanate nanotubes: a new strategy for using mercury electrodes in analytical application. MONATSHEFTE FUR CHEMIE 2020. [DOI: 10.1007/s00706-020-02691-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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13
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Electrochemical behaviour of anticancer drug lomustine and in situ evaluation of its interaction with DNA. J Pharm Biomed Anal 2019; 176:112786. [DOI: 10.1016/j.jpba.2019.112786] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 07/17/2019] [Accepted: 07/23/2019] [Indexed: 11/18/2022]
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14
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Kurbanoglu S, Bakirhan NK, Gumustas M, Ozkan SA. Modern Assay Techniques for Cancer Drugs: Electroanalytical and Liquid Chromatography Methods. Crit Rev Anal Chem 2019; 49:306-323. [PMID: 30595027 DOI: 10.1080/10408347.2018.1527206] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In the past decades, patients who have chemotherapy treatment have considerably increased number. At this point, the development of rapid precise, and reliable methods are very important to analyze cancer drugs from their dosage forms, animals or human biological samples. Among all the analytical methods, electrochemical methods hold an important position with their unique properties such as specificity in the biological recognition process, fast response, and their reliability and do not need a pretreatment process. Chromatographic methods are also used in a wide range of analytical applications for the analyses of anticancer drugs. The power of chromatography comes from its ability to separate a mixture of analytes and determination of their concentrations. Chromatographic techniques can mainly be divided into gas, liquid, and supercritical fluid chromatography. In the frame of this information, this review is aimed to provide basic principles of electroanalytical and high-performance liquid chromatography methods for the analysis of cancer drugs. In addition, some selected applications for electrochemistry-related techniques and high-performance liquid chromatography, for the determination of anti-cancer pharmaceuticals published in the last five years are also discussed.
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Affiliation(s)
- Sevinc Kurbanoglu
- a Faculty of Pharmacy, Department of Analytical Chemistry , Ankara University , Ankara , Turkey
| | - Nurgul K Bakirhan
- b Faculty of Science and Art, Department of Chemistry , Hitit University , Çorum , Turkey
| | - Mehmet Gumustas
- c Department of Forensic Toxicology , Ankara University Institute of Forensic Sciences , Ankara , Turkey
| | - Sibel A Ozkan
- a Faculty of Pharmacy, Department of Analytical Chemistry , Ankara University , Ankara , Turkey
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Lima HRS, da Silva JS, de Oliveira Farias EA, Teixeira PRS, Eiras C, Nunes LC. Electrochemical sensors and biosensors for the analysis of antineoplastic drugs. Biosens Bioelectron 2018; 108:27-37. [DOI: 10.1016/j.bios.2018.02.034] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2017] [Revised: 02/02/2018] [Accepted: 02/12/2018] [Indexed: 12/13/2022]
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16
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Dilgin DG. Determination of Calcium Dobesilate by Differential Pulse Voltammetry at a Disposable Pencil Graphite Electrode. ANAL LETT 2017. [DOI: 10.1080/00032719.2017.1323335] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Didem Giray Dilgin
- Biga Vocational School, Çanakkale Onsekiz Mart University, Biga, Çanakkale, Turkey
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17
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Stępniowska A, Sztanke M, Tuzimski T, Korolczuk M, Sztanke K. A simple stripping voltammetric method for the determination of a new anticancer prodrug in serum. Biosens Bioelectron 2017; 94:584-588. [PMID: 28364705 DOI: 10.1016/j.bios.2017.03.053] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 03/24/2017] [Indexed: 10/19/2022]
Abstract
The determination of ethyl [4-oxo-8-(3-chlorophenyl)-4,6,7,8-tetrahydroimidazo[2,1-c][1,2,4]triazin-3-yl]acetate (ETTA), a new anticancer prodrug, using adsorptive stripping voltammetry (AdSV) was described for the first time. This method is based on adsorptive/reductive behaviour of ETTA at an in situ plated bismuth film electrode (BiFE) as a sensor. A number of experimental variables (e.g., a composition and pH of the supporting electrolyte, the conditions of bismuth film deposition, an accumulation potential and time, the scan rate, etc.) were thoroughly studied in order to achieve a high sensitivity. Experimental results under optimized conditions revealed an excellent linear correlation between the monitored voltammetric peak current and the ETTA concentration in the range of 2-50μgL-1 following an accumulation time of 300s. The limit of detection (LOD) for ETTA following 300s of an accumulation time was 0.4μgL-1. The proposed facile, sensitive and inexpensive method was successfully applied to the determination of ETTA in serum. The investigated prodrug was extracted from serum using SPE method.
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Affiliation(s)
- Anna Stępniowska
- Department of Biochemistry and Toxicology, University of Life Sciences in Lublin, 13 Akademicka, 20-950 Lublin, Poland.
| | - Małgorzata Sztanke
- Chair and Department of Medical Chemistry, Medical University of Lublin, 4A Chodźki Street, 20-093 Lublin, Poland
| | - Tomasz Tuzimski
- Department of Physical Chemistry, Chair of Chemistry, Faculty of Pharmacy with Medical Analytics Division, Medical University of Lublin, 4A Chodźki Street, 20-093 Lublin, Poland
| | - Mieczysław Korolczuk
- Faculty of Chemistry, Maria Curie-Skłodowska University, 3 Maria Curie-Skłodowska Sq., 20-031 Lublin, Poland
| | - Krzysztof Sztanke
- Laboratory of Bioorganic Synthesis and Analysis, Chair and Department of Medical Chemistry, Medical University of Lublin, 4A Chodźki Street, 20-093 Lublin, Poland
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David IG, Popa DE, Buleandra M. Pencil Graphite Electrodes: A Versatile Tool in Electroanalysis. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2017; 2017:1905968. [PMID: 28255500 PMCID: PMC5307002 DOI: 10.1155/2017/1905968] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 12/19/2016] [Accepted: 01/04/2017] [Indexed: 05/05/2023]
Abstract
Due to their electrochemical and economical characteristics, pencil graphite electrodes (PGEs) gained in recent years a large applicability to the analysis of various types of inorganic and organic compounds from very different matrices. The electrode material of this type of working electrodes is constituted by the well-known and easy commercially available graphite pencil leads. Thus, PGEs are cheap and user-friendly and can be employed as disposable electrodes avoiding the time-consuming step of solid electrodes surface cleaning between measurements. When compared to other working electrodes PGEs present lower background currents, higher sensitivity, good reproducibility, and an adjustable electroactive surface area, permitting the analysis of low concentrations and small sample volumes without any deposition/preconcentration step. Therefore, this paper presents a detailed overview of the PGEs characteristics, designs and applications of bare, and electrochemically pretreated and chemically modified PGEs along with the corresponding performance characteristics like linear range and detection limit. Techniques used for bare or modified PGEs surface characterization are also reviewed.
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Affiliation(s)
- Iulia Gabriela David
- Department of Analytical Chemistry, Faculty of Chemistry, University of Bucharest, Panduri Av. 90–92, District 5, 050663 Bucharest, Romania
| | - Dana-Elena Popa
- Department of Analytical Chemistry, Faculty of Chemistry, University of Bucharest, Panduri Av. 90–92, District 5, 050663 Bucharest, Romania
| | - Mihaela Buleandra
- Department of Analytical Chemistry, Faculty of Chemistry, University of Bucharest, Panduri Av. 90–92, District 5, 050663 Bucharest, Romania
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Zheng R, Zhong J, Zhao C, Lang X, Hu Z, Luo J. An ultrasensitive electrochemiluminescent sensor based on a pencil graphite electrode modified with CdS nanorods for detection of chlorogenic acid in honeysuckle. LUMINESCENCE 2016; 32:806-811. [PMID: 27995761 DOI: 10.1002/bio.3255] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2016] [Revised: 08/31/2016] [Accepted: 10/19/2016] [Indexed: 12/26/2022]
Abstract
In this paper, a novel and ultrasensitive electrochemiluminescent sensor employing a solvothermal-synthesized CdS nanorod-modified pencil graphite electrode (CdS/PGE) for the determination of chlorogenic acid (CA) is fabricated. In the first step, the PGE surface is modified using CdS nanorods. In the next step, the developed electrode is used to detect CA using a electrochemiluminescent (ECL) technique, in which potassium persulfate (K2 S2 O8 ) served as a co-reactant. The possible ECL mechanism is investigated, and the influences of pH and cyclic voltammetric scanning rate on the signal response are studied. The ECL intensity decreases quantitatively in relation to the concentration of the target molecule. Under optimized conditions, the linear correlation between the quenched ECL intensity and the logarithm of CA concentration is observed in the range from 2 × 10-9 to 8 × 10-7 mol L-1 with a limit of detection of 1 × 10-9 mol L-1 . This proposed method is applied to the analysis of CA in honeysuckle flower, giving recoveries of 99-107%. The experimental results demonstrate that this ECL sensor shows good stability and reproducibility.
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Affiliation(s)
- Ruijuan Zheng
- College of Chemistry and Materials Science, Longyan University, Longyan, China
| | - Jianhai Zhong
- Longyan Entry-Exit Inspection and Quarantine Bureau, Longyan, China
| | - Chenhao Zhao
- College of Chemistry and Materials Science, Longyan University, Longyan, China
| | - Xiaoling Lang
- College of Chemistry and Materials Science, Longyan University, Longyan, China
| | - Zhibiao Hu
- College of Chemistry and Materials Science, Longyan University, Longyan, China
| | - Jiangshui Luo
- Lab of Proton conductors, Longyan University, Longyan, Fujian, 364012, China
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