Electroanalysis最新文献_第10页

Amperometric Biosensor Based on a Semipermeable Poly-Meta-Phenylenediamine Membrane and Immobilized Lactate Oxidase for Highly Accurate l-Lactate Determination in Blood Serum 基于半透聚间苯二胺膜和固定化乳酸氧化酶的安培生物传感器高精度测定血清中l-乳酸

IF 2.7 3区化学

Electroanalysis Pub Date : 2025-01-23 DOI: 10.1002/elan.12011

Kseniia Berketa, Anhelina Buzhak, Yevhen Vakhovskyi, Daryna Mruga, Andrii Sverstiuk, Olha Soldatkina, Olha Lyubovych, Olga Marchuk, Serhii Dzyadevych, Oleksandr Soldatkin

{"title":"Amperometric Biosensor Based on a Semipermeable Poly-Meta-Phenylenediamine Membrane and Immobilized Lactate Oxidase for Highly Accurate l-Lactate Determination in Blood Serum","authors":"Kseniia Berketa, Anhelina Buzhak, Yevhen Vakhovskyi, Daryna Mruga, Andrii Sverstiuk, Olha Soldatkina, Olha Lyubovych, Olga Marchuk, Serhii Dzyadevych, Oleksandr Soldatkin","doi":"10.1002/elan.12011","DOIUrl":"https://doi.org/10.1002/elan.12011","url":null,"abstract":"This article presents the development and optimization of a biosensor for the accurate and rapid determination of l-lactate concentration in human serum samples. The biosensor uses lactate oxidase immobilized in a bovine serum albumin matrix on a platinum transducer, modified with a semipermeable m-polyphenylenediamine (PPD) membrane. The PPD membrane minimizes influence from solution parameters like ionic strength and protein content, as well as interferents in blood serum on an analysis result. The biosensor offers a broad linear range (7–1000 μM), low detection limit (7 μM), and short analysis time (8 min), making it suitable for real serum samples measurement. Results showed high correlation with reference methods, with a correlation coefficient of 0.982 in comparison with standard analysis method. Stability tests indicated an RSD of 2.9% and 6.7% for model and real samples analysis, with functionality sustained over 5 days. This biosensor is promising for clinical diagnostics due to its speed, accuracy, and stability in measuring l-lactate.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"37 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143118656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing the Detection Performance of Light-Addressable Potentiometric Sensor Using Efficient Light Source Excitation 利用高效光源激励提高光寻址电位传感器的检测性能

IF 2.7 3区化学

Electroanalysis Pub Date : 2025-01-23 DOI: 10.1002/elan.12009

Jie Tan, Zigeng Huang, Xin Cao, Shibin Liu, Jiezhang Luo, Yinghao Chen, Wenbo Zhao

{"title":"Enhancing the Detection Performance of Light-Addressable Potentiometric Sensor Using Efficient Light Source Excitation","authors":"Jie Tan, Zigeng Huang, Xin Cao, Shibin Liu, Jiezhang Luo, Yinghao Chen, Wenbo Zhao","doi":"10.1002/elan.12009","DOIUrl":"https://doi.org/10.1002/elan.12009","url":null,"abstract":"\u0000Light-addressable potentiometric sensor (LAPS), as a potentiometric semiconductor field-effect electrochemical sensor with the advantages of high sensitivity, low cost, and simple fabrication, has been developed as an important tool for the label-free detection of biochemical species. An important challenge is that its output signal is small, its sensing capability and anti-interference capability are weak, and it needs to be further improved. In this paper, the effect of six typical waveforms as light-source excitations on the outputs, pH-sensing, and the resistance to noise interference of LAPS is innovatively investigated to seek efficient illumination. The frequency-dependent photocurrent, anti-interference capability, and pH-sensing of LAPS under different waveform excitation conditions are evaluated and compared. The experimental results show that LAPS using illumination excited with a square wave has the maximum photocurrent and signal-to-noise ratio, the enhancement ratio of the photocurrent close to the theoretical value, high sensitivity, and linearity compared to other waveform excitations. This simple and efficient illumination scheme will open new way for improving the detection performance of LAPS as well as biochemical sensors based on the semiconductor field effect principle.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"37 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143118300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrochemical Sensor Built on Graphene@Iron-Based Metal–Organic Frameworks for Simultaneous Detection of Cd2+ and Pb2+ 基于Graphene@Iron-Based金属-有机框架的电化学传感器用于同时检测Cd2+和Pb2+

IF 2.7 3区化学

Electroanalysis Pub Date : 2025-01-23 DOI: 10.1002/elan.12002

Xiaofang Zheng, Yujie Han, Zhiguang Liu, Shufeng Liang, Chunyan Wang, Yujing Guo

{"title":"Electrochemical Sensor Built on Graphene@Iron-Based Metal–Organic Frameworks for Simultaneous Detection of Cd2+ and Pb2+","authors":"Xiaofang Zheng, Yujie Han, Zhiguang Liu, Shufeng Liang, Chunyan Wang, Yujing Guo","doi":"10.1002/elan.12002","DOIUrl":"https://doi.org/10.1002/elan.12002","url":null,"abstract":"The contamination of heavy metal ions (HMIs) in the environment poses a serious threat to health and safety. It is essential to efficiently and accurately detect multiple HMIs in environmental samples for water quality monitoring. In this work, a two-dimensional material composed of polyvinylpyrrolidone/graphene and iron-based metal–organic frameworks (PVP/GNs@Fe-MOF) was synthesized by ultrasonic method. This material combines the advantages of PVP/GNs and Fe-MOF, exhibiting enhanced conductivity, large specific surface area, and porosity, thus broadening the application potential of MOF and demonstrating excellent performance in electrochemical sensing. Using PVP/GNs@Fe-MOF as the electrode material, a simple electrochemical sensing platform was constructed for the simultaneous detection of Cd2+ and Pb2+. The results show good analytical performance with linear ranges of 0.030–1.0 μmol/L for Cd2+ and 3.0 nmol/L−1.0 μmol/L for Pb2+, and the limit of detection of 0.010 μmol/L and 1.0 nmol/L (S/N = 3), respectively. The rapid and sensitive simultaneous detection of Cd2+ and Pb2+ in real sample was also achieved.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"37 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143118301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

pH-Dependant Electrochemical Oxidation of Small Molecules on Glassy Carbon, Platinum and Gold 玻璃碳、铂和金上小分子电化学氧化的ph依赖性研究

IF 2.7 3区化学

Electroanalysis Pub Date : 2025-01-22 DOI: 10.1002/elan.12013

Samuel V. Somerville, Manusha Dissanayake, Yoshiki Soda, Tania M. Benedetti, Richard D. Tilley, J. Justin Gooding

{"title":"pH-Dependant Electrochemical Oxidation of Small Molecules on Glassy Carbon, Platinum and Gold","authors":"Samuel V. Somerville, Manusha Dissanayake, Yoshiki Soda, Tania M. Benedetti, Richard D. Tilley, J. Justin Gooding","doi":"10.1002/elan.12013","DOIUrl":"https://doi.org/10.1002/elan.12013","url":null,"abstract":"Composite electrodes often consisting of a purportedly inactive support material modified with a variety of nanomaterials, surface chemistry and coatings are commonly employed as electroanalytical devices for detection of biologically relevant molecules. However, these electrodes are often used in various electrolytes and biological fluids treated in a variety of ways making comparisons between materials difficult. Additionally, nanomaterial designers have developed techniques capable of controlling the local solution environment at the interface of electrodes. Herein, we present a study of the electro-oxidation of glucose, ascorbic acid, uric acid and dopamine on glassy carbon, platinum and gold. Peak potential and current versus pH are presented to provide a database and resource to aid in the deconvolution of the electrochemical response produced by these materials. Additionally, in light of recent developments in pH control within nanoconfined electrodes, a study of how altering the pH of an electrolyte allows for the separation of previously overlapping peaks is presented.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"37 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elan.12013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143118033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multiwalled Carbon Nanotube and Poly(Brilliant Cresyl Blue)-Ternary Deep Eutectic Solvent-Modified Electrodes for Simultaneous Determination of Acetaminophen and Dopamine 多壁碳纳米管和聚亮甲酚蓝-三元深共晶溶剂修饰电极同时测定对乙酰氨基酚和多巴胺

IF 2.7 3区化学

Electroanalysis Pub Date : 2025-01-22 DOI: 10.1002/elan.12012

Xizhen Liang, Liu Xinyi, Zhou Yueming, Christopher M. A. Brett

{"title":"Multiwalled Carbon Nanotube and Poly(Brilliant Cresyl Blue)-Ternary Deep Eutectic Solvent-Modified Electrodes for Simultaneous Determination of Acetaminophen and Dopamine","authors":"Xizhen Liang, Liu Xinyi, Zhou Yueming, Christopher M. A. Brett","doi":"10.1002/elan.12012","DOIUrl":"https://doi.org/10.1002/elan.12012","url":null,"abstract":"An electrochemical platform based on multiwalled carbon nanotubes (CNT) and poly(brilliant cresyl blue) (PBCB) modified glassy carbon electrodes has been fabricated with electropolymerization in ternary deep eutectic solvents (DES). The DES are composed of choline chloride as hydrogen bond acceptor and ethylene glycol and fructose as hydrogen bond donors, the proportions of which were optimized. Characterization was carried out by cyclic voltammetry, electrochemical impedance spectroscopy, and scanning electron microscopy. The performance of the modified electrode as sensor was evaluated for simultaneous detection of dopamine (DA) and acetaminophen (APAP) in Britton–Robinson buffer aqueous solution by differential pulse voltammetry. The combination of CNT and PBCB formed in DES led to a synergistic effect resulting in improved electrochemical sensor performance. The electrochemical platform was successfully used for the simultaneous determination of APAP in pharmaceutical samples and of DA and APAP in human saliva and urine, with good recoveries.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"37 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143117823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

pH-Dependant Electrochemical Oxidation of Small Molecules on Glassy Carbon, Platinum and Gold 玻璃碳、铂和金上小分子电化学氧化的ph依赖性研究

IF 2.7 3区化学

Electroanalysis Pub Date : 2025-01-22 DOI: 10.1002/elan.12013

Samuel V. Somerville, Manusha Dissanayake, Yoshiki Soda, Tania M. Benedetti, Richard D. Tilley, J. Justin Gooding

{"title":"pH-Dependant Electrochemical Oxidation of Small Molecules on Glassy Carbon, Platinum and Gold","authors":"Samuel V. Somerville, Manusha Dissanayake, Yoshiki Soda, Tania M. Benedetti, Richard D. Tilley, J. Justin Gooding","doi":"10.1002/elan.12013","DOIUrl":"https://doi.org/10.1002/elan.12013","url":null,"abstract":"Composite electrodes often consisting of a purportedly inactive support material modified with a variety of nanomaterials, surface chemistry and coatings are commonly employed as electroanalytical devices for detection of biologically relevant molecules. However, these electrodes are often used in various electrolytes and biological fluids treated in a variety of ways making comparisons between materials difficult. Additionally, nanomaterial designers have developed techniques capable of controlling the local solution environment at the interface of electrodes. Herein, we present a study of the electro-oxidation of glucose, ascorbic acid, uric acid and dopamine on glassy carbon, platinum and gold. Peak potential and current versus pH are presented to provide a database and resource to aid in the deconvolution of the electrochemical response produced by these materials. Additionally, in light of recent developments in pH control within nanoconfined electrodes, a study of how altering the pH of an electrolyte allows for the separation of previously overlapping peaks is presented.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"37 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elan.12013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143117821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multiwalled Carbon Nanotube and Poly(Brilliant Cresyl Blue)-Ternary Deep Eutectic Solvent-Modified Electrodes for Simultaneous Determination of Acetaminophen and Dopamine 多壁碳纳米管和聚亮甲酚蓝-三元深共晶溶剂修饰电极同时测定对乙酰氨基酚和多巴胺

IF 2.7 3区化学

Electroanalysis Pub Date : 2025-01-22 DOI: 10.1002/elan.12012

Xizhen Liang, Liu Xinyi, Zhou Yueming, Christopher M. A. Brett

{"title":"Multiwalled Carbon Nanotube and Poly(Brilliant Cresyl Blue)-Ternary Deep Eutectic Solvent-Modified Electrodes for Simultaneous Determination of Acetaminophen and Dopamine","authors":"Xizhen Liang, Liu Xinyi, Zhou Yueming, Christopher M. A. Brett","doi":"10.1002/elan.12012","DOIUrl":"https://doi.org/10.1002/elan.12012","url":null,"abstract":"An electrochemical platform based on multiwalled carbon nanotubes (CNT) and poly(brilliant cresyl blue) (PBCB) modified glassy carbon electrodes has been fabricated with electropolymerization in ternary deep eutectic solvents (DES). The DES are composed of choline chloride as hydrogen bond acceptor and ethylene glycol and fructose as hydrogen bond donors, the proportions of which were optimized. Characterization was carried out by cyclic voltammetry, electrochemical impedance spectroscopy, and scanning electron microscopy. The performance of the modified electrode as sensor was evaluated for simultaneous detection of dopamine (DA) and acetaminophen (APAP) in Britton–Robinson buffer aqueous solution by differential pulse voltammetry. The combination of CNT and PBCB formed in DES led to a synergistic effect resulting in improved electrochemical sensor performance. The electrochemical platform was successfully used for the simultaneous determination of APAP in pharmaceutical samples and of DA and APAP in human saliva and urine, with good recoveries.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"37 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143118034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cover Picture: (Electroanalysis 1/2025) 封面图片：（Electroanalysis 1/2025）

IF 2.7 3区化学

Electroanalysis Pub Date : 2025-01-09 DOI: 10.1002/elan.202580101

引用次数: 0

Cover Picture: (Electroanalysis 1/2025) 封面图片：（Electroanalysis 1/2025）

IF 2.7 3区化学

Electroanalysis Pub Date : 2025-01-09 DOI: 10.1002/elan.202580101

引用次数: 0

Cover Picture: (Electroanalysis 12/2024) 封面图片：（电解 12/2024）

IF 2.7 3区化学

Electroanalysis Pub Date : 2024-12-20 DOI: 10.1002/elan.202481201

引用次数: 0