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Malarat N, Soleh A, Saisahas K, Samoson K, Promsuwan K, Saichanapan J, Wangchuk S, Meng L, Limbut W. Electropolymerization of poly(phenol red) on laser-induced graphene electrode enhanced adsorption of zinc for electrochemical detection. Talanta 2024; 272:125751. [PMID: 38377665 DOI: 10.1016/j.talanta.2024.125751] [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: 10/26/2023] [Revised: 01/30/2024] [Accepted: 02/05/2024] [Indexed: 02/22/2024]
Abstract
We present a highly sensitive and selective electrode of laser-induced graphene modified with poly(phenol red) (P(PhR)@LIG) for measuring zinc nutrition in rice grains using square wave anodic stripping voltammetry (SWASV). The physicochemical properties of P(PhR)@LIG were investigated with scanning electron microscopy (SEM), energy-dispersive X-ray (EDX), Fourier infrared spectroscopy (FT-IR) and Raman spectroscopy. The modified electrode demonstrated an amplified anodic stripping response of Zn2+ due to the electropolymerization of P(PhR), which enhanced analyte adsorption during the accumulation step of SWASV. Under optimized parameters, the developed sensor provided a linear range from 30 to 3000 μg L-1 with a detection limit of 14.5 μg L-1. The proposed electrode demonstrated good reproducibility and good anti-interference properties. The sensor detected zinc nutrition in rice grain samples with good accuracy and the results were consistent with the standard ICP-OES method.
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Affiliation(s)
- Natchaya Malarat
- Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Center of Excellence for Innovation in Chemistry, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Division of Physical Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Asamee Soleh
- Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Division of Health and Applied Sciences, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Forensic Science Innovation and Service Center, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Kasrin Saisahas
- Division of Health and Applied Sciences, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Forensic Science Innovation and Service Center, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Krisada Samoson
- Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Division of Health and Applied Sciences, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Forensic Science Innovation and Service Center, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Kiattisak Promsuwan
- Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Division of Health and Applied Sciences, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Forensic Science Innovation and Service Center, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Jenjira Saichanapan
- Division of Health and Applied Sciences, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Forensic Science Innovation and Service Center, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Sangay Wangchuk
- Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Center of Excellence for Innovation in Chemistry, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Division of Physical Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Lingyin Meng
- Sensor and Actuator Systems, Department of Physics, Chemistry and Biology, Linköping University, 581 83, Linköping, Sweden.
| | - Warakorn Limbut
- Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Center of Excellence for Innovation in Chemistry, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Division of Health and Applied Sciences, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Forensic Science Innovation and Service Center, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand.
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2
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Dehghani P, Karthikeyan V, Tajabadi A, Assi DS, Catchpole A, Wadsworth J, Leung HY, Roy VAL. Rapid Near-Patient Impedimetric Sensing Platform for Prostate Cancer Diagnosis. ACS OMEGA 2024; 9:14580-14591. [PMID: 38560003 PMCID: PMC10976404 DOI: 10.1021/acsomega.4c00843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 03/01/2024] [Indexed: 04/04/2024]
Abstract
With the global escalation of concerns surrounding prostate cancer (PCa) diagnosis, reliance on the serologic prostate-specific antigen (PSA) test remains the primary approach. However, the imperative for early PCa diagnosis necessitates more effective, accurate, and rapid diagnostic point-of-care (POC) devices to enhance the result reliability and minimize disease-related complications. Among POC approaches, electrochemical biosensors, known for their amenability and miniaturization capabilities, have emerged as promising candidates. In this study, we developed an impedimetric sensing platform to detect urinary zinc (UZn) in both artificial and clinical urine samples. Our approach lies in integrating label-free impedimetric sensing and the introduction of porosity through surface modification techniques. Leveraging a cellulose acetate/reduced graphene oxide composite, our sensor's recognition layer is engineered to exhibit enhanced porosity, critical for improving the sensitivity, capture, and interaction with UZn. The sensitivity is further amplified by incorporating zincon as an external dopant, establishing highly effective recognition sites. Our sensor demonstrates a limit of detection of 7.33 ng/mL in the 0.1-1000 ng/mL dynamic range, which aligns with the reference benchmark samples from clinical biochemistry. Our sensor results are comparable with the results of inductively coupled plasma mass spectrometry (ICP-MS) where a notable correlation of 0.991 is achieved. To validate our sensor in a real-life scenario, tests were performed on human urine samples from patients being investigated for prostate cancer. Testing clinical urine samples using our sensing platform and ICP-MS produced highly comparable results. A linear correlation with R2 = 0.964 with no significant difference between two groups (p-value = 0.936) was found, thus confirming the reliability of our sensing platform.
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Affiliation(s)
- Parisa Dehghani
- James
Watt School of Engineering, University of
Glasgow, Glasgow G12 8QQ, U.K.
| | | | - Ataollah Tajabadi
- James
Watt School of Engineering, University of
Glasgow, Glasgow G12 8QQ, U.K.
| | - Dani S. Assi
- James
Watt School of Engineering, University of
Glasgow, Glasgow G12 8QQ, U.K.
| | - Anthony Catchpole
- Scottish
Trace Element and Micronutrient Diagnostic and Research Laboratory,
Department of Biochemistry, Royal Infirmary, Glasgow G31 2ER, U.K.
| | - John Wadsworth
- Scottish
Trace Element and Micronutrient Diagnostic and Research Laboratory,
Department of Biochemistry, Royal Infirmary, Glasgow G31 2ER, U.K.
| | - Hing Y. Leung
- Cancer
Research UK Scotland Institute, Glasgow G61 1BD, U.K.
- School
of Cancer Sciences, MVLS, University of
Glasgow, Glasgow G61 1BD, U.K.
| | - Vellaisamy A. L. Roy
- School
of Science and Technology, Hong Kong Metropolitan
University, Ho Man Tin, Hong Kong
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3
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Vieira D, Allard J, Taylor K, Harvey EJ, Merle G. Zincon-Modified CNTs Electrochemical Tool for Salivary and Urinary Zinc Detection. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4431. [PMID: 36558285 PMCID: PMC9784302 DOI: 10.3390/nano12244431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 12/07/2022] [Accepted: 12/08/2022] [Indexed: 06/17/2023]
Abstract
Recently, the abnormal level of zinc emerged as a powerful indicator or risk factor for metabolic, endocrine, neurodegenerative and cardiovascular diseases, including cancer. Electrochemical detection has been explored to quantify zinc in a precise, rapid, and non-expensive way; however, most of the current electrochemical systems lack in specificity. In this work we studied a highly selective and sensitive electrochemical method to detect quickly and reliably free zinc ions (Zn2+). The surface of the working electrode was modified with zincon electropolymerized on carbon nanotube (CNT) to enable the binding of zinc in complex body fluids. After being physicochemically characterized, the performances of the zincon-CNT complex was electrochemically assessed. Square Wave Voltammetry (SWV) was used to determine the calibration curve and the linear range of zinc quantification in artificial saliva and urine. This zincon- CNT system could specifically quantify mobile Zn2+ in salivary and urinary matrices with a sensitivity of ~100 ng·mL-1 and a limit of detection (LOD) of ~20 ng·mL-1. Zincon-modified CNT presented as a desirable candidate for the detection and quantification of free zinc in easily body fluids that potentially can become a diagnostic non-invasive testing platform.
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Affiliation(s)
- Daniela Vieira
- Department of Experimental Surgery, Faculty of Medicine, McGill University, 1650 Cedar Avenue, A7-117, Montreal, QC H3G 1A4, Canada
| | - Jérôme Allard
- Department of Chemical Engineering, Polytechnique Montreal, J.-A.-Bombardier Building, Office 2067, Montreal, QC H3C 3A7, Canada
| | - Kathleen Taylor
- Department of Chemical Engineering, Polytechnique Montreal, J.-A.-Bombardier Building, Office 2067, Montreal, QC H3C 3A7, Canada
- Department of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr, Atlanta, GA 30318, USA
| | - Edward J. Harvey
- Department of Experimental Surgery, Faculty of Medicine, McGill University, 1650 Cedar Avenue, A7-117, Montreal, QC H3G 1A4, Canada
| | - Geraldine Merle
- Department of Experimental Surgery, Faculty of Medicine, McGill University, 1650 Cedar Avenue, A7-117, Montreal, QC H3G 1A4, Canada
- Department of Chemical Engineering, Polytechnique Montreal, J.-A.-Bombardier Building, Office 2067, Montreal, QC H3C 3A7, Canada
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Pei X, Kang W, Yue W, Bange A, Heineman W, Papautsky I. Disposable copper-based electrochemical sensor for anodic stripping voltammetry. Anal Chem 2014; 86:4893-900. [PMID: 24773513 PMCID: PMC4030804 DOI: 10.1021/ac500277j] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Accepted: 04/14/2014] [Indexed: 11/28/2022]
Abstract
In this work, we report the first copper-based point-of-care sensor for electrochemical measurements demonstrated by zinc determination in blood serum. Heavy metals require careful monitoring, yet current methods are too complex for a point-of-care system. Electrochemistry offers a simple approach to metal detection on the microscale, but traditional carbon, gold (Au), or platinum (Pt) electrodes are difficult or expensive to microfabricate, preventing widespread use. Our sensor features a new low-cost electrode material, copper, which offers simple fabrication and compatibility with microfabrication and PCB processing, while maintaining competitive performance in electrochemical detection. Anodic stripping voltammetry of zinc using our new copper-based sensors exhibited a 140 nM (9.0 ppb) limit of detection (calculated) and sensitivity greater than 1 μA/μM in the acetate buffer. The sensor was also able to determine zinc in a bovine serum extract, and the results were verified with independent sensor measurements. These results demonstrate the advantageous qualities of this lab-on-a-chip electrochemical sensor for clinical applications, which include a small sample volume (μL scale), reduced cost, short response time, and high accuracy at low concentrations of analyte.
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Affiliation(s)
- Xing Pei
- BioMicroSystems
Lab, Department of Electrical Engineering and Computing
Systems, University of Cincinnati, Cincinnati, Ohio 45221-0030, United States
| | - Wenjing Kang
- BioMicroSystems
Lab, Department of Electrical Engineering and Computing
Systems, University of Cincinnati, Cincinnati, Ohio 45221-0030, United States
| | - Wei Yue
- Department
of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221-0172, United States
| | - Adam Bange
- Department
of Chemistry, Xavier University, Cincinnati, Ohio 45207-4221, United States
| | - William
R. Heineman
- Department
of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221-0172, United States
| | - Ian Papautsky
- BioMicroSystems
Lab, Department of Electrical Engineering and Computing
Systems, University of Cincinnati, Cincinnati, Ohio 45221-0030, United States
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Pei X, Kang W, Yue W, Bange A, Heineman WR, Papautsky I. Improving Reproducibility of Lab-on-a-Chip Sensor with Bismuth Working Electrode for Determining Zn in Serum by Anodic Stripping Voltammetry. JOURNAL OF THE ELECTROCHEMICAL SOCIETY 2014; 161:B3160-B3166. [PMID: 24729629 PMCID: PMC3980724 DOI: 10.1149/2.022402jes] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
This work reports on the continuing development of a lab-on-a-chip electrochemical sensor for determination of zinc in blood serum using square wave anodic stripping voltammetry. The microscale sensor consists of a three electrode system, including an environmentally friendly bismuth working electrode, an integrated silver/silver chloride reference electrode, and a gold auxiliary electrode. The sensor demonstrates a linear response in 0.1 M acetate buffer at pH 6 for zinc concentrations in the 1-30 μM range. By optimizing bismuth film deposition and better control of the fabrication process, repeatability of the sensor was improved, reducing variability from 42% to <2%. Through optimization of electrolyte and stripping voltammetry parameters, limit of detection was greatly improved to 60 nM. The optimized sensor was also able to measure zinc in the extracted blood serum. Ultimately, with integrated sample preparation, the sensor will permit rapid (min) measurements of zinc from a sub-mL sample (a few drops of blood) for clinical applications.
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Affiliation(s)
- Xing Pei
- BioMicroSystems Laboratory, Department of Electrical Engineering and Computing Systems, University of Cincinnati, Cincinnati, Ohio 45221, USA
| | - Wenjing Kang
- BioMicroSystems Laboratory, Department of Electrical Engineering and Computing Systems, University of Cincinnati, Cincinnati, Ohio 45221, USA
| | - Wei Yue
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221, USA
| | - Adam Bange
- Department of Chemistry, Xavier University, Cincinnati, Ohio 45207, USA
| | - William R. Heineman
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221, USA
| | - Ian Papautsky
- BioMicroSystems Laboratory, Department of Electrical Engineering and Computing Systems, University of Cincinnati, Cincinnati, Ohio 45221, USA
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