Electroanalysis最新文献_第4页

Cover Picture: (Electroanalysis 8/2024) 封面图片：（电解 8/2024）

IF 2.7 3区化学

Electroanalysis Pub Date : 2024-08-12 DOI: 10.1002/elan.202480801

引用次数: 0

Synthesis of a Hematite-Geopolymer Composite: Optimization of Formulation Parameters and Application to the Detection of Pb2+ Ions in Aqueous Solution 赤铁矿-地聚合物复合材料的合成：优化配方参数并应用于水溶液中铅 2+ 离子的检测

IF 2.7 3区化学

Electroanalysis Pub Date : 2024-08-07 DOI: 10.1002/elan.202300420

Michèle Boutianala, Martin Pengou, Guy Bertrand Piegang Ngassa, Pengkun Hou, Jean Jacques Kouadjo Tchekwagep, Herve Kouamo Tchakouté, Charle Péguy Nanseu-Njiki, Emmanuel Ngameni

{"title":"Synthesis of a Hematite-Geopolymer Composite: Optimization of Formulation Parameters and Application to the Detection of Pb2+ Ions in Aqueous Solution","authors":"Michèle Boutianala, Martin Pengou, Guy Bertrand Piegang Ngassa, Pengkun Hou, Jean Jacques Kouadjo Tchekwagep, Herve Kouamo Tchakouté, Charle Péguy Nanseu-Njiki, Emmanuel Ngameni","doi":"10.1002/elan.202300420","DOIUrl":"10.1002/elan.202300420","url":null,"abstract":"The Composite Centered Experimental Design (CCED) using the response surface methodology was used to optimize the synthesis of a hematite-geopolymer composite, applied to the preparation of a Pb2+ electrochemical sensor. Two important experimental parameters in the formulation (curing time and hematite content) were considered in the optimization of the synthesis of the composite material. The electrochemical signal of Pb2+ at a carbon paste electrode modified by the synthesized composite was used as a response to identify the best formulation. After applying the generated experimental plan, the optimal composite material was obtained using 17.08% hematite and a curing time of 0.16 days. The characterization of the optimized composite material revealed the presence of a porous structure and a poly(phospho-ferro-siloxo) network, but with a fraction of well dispersed and unreacted hematite. Preliminary experiments confirmed that the sensor prepared with the composite showed high stability and reproducibility of the Pb (II) signal, justifying its application for accurate sensing of the metal cation in an aqueous solution. A Pb2+ calibration curve was obtained after optimizing the experimental detection parameters (composition of the carbon paste electrode, pH of the accumulation solution, accumulation time, and electrolysis potential). A detection limit of 0.2 nM (based on a signal-to-noise ratio of 3) was obtained for a studied concentration range between 0.04 and 0.48 nM. The designed sensor also showed remarkable selectivity and excellent performance in real media samples (spring, tap, rain, and well water).","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"36 11","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141949464","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

Development of a Low-Cost and Easy-to-Prepare Carbon-Based Ink for Printed Electrodes Using Pet as Support 开发低成本、易制备的碳基墨水，用于以宠物为支撑物的印刷电极

IF 2.7 3区化学

Electroanalysis Pub Date : 2024-08-07 DOI: 10.1002/elan.202400027

Malena Karla Lombello Coelho de Souza, Daniela Nunes da Silva, Lucas Franco Ferreira, Arnaldo César Pereira

{"title":"Development of a Low-Cost and Easy-to-Prepare Carbon-Based Ink for Printed Electrodes Using Pet as Support","authors":"Malena Karla Lombello Coelho de Souza, Daniela Nunes da Silva, Lucas Franco Ferreira, Arnaldo César Pereira","doi":"10.1002/elan.202400027","DOIUrl":"10.1002/elan.202400027","url":null,"abstract":"This study presents the development of a low-cost, easy-to-prepare carbon-based ink for printed electrodes using polyethylene terephthalate (PET) as the support material. The ink was composed of graphite and cellulose acetate (80 : 20%) mixed with acetone and cyclohexanone as solvents. The screen-printing technique, a versatile and economical method that allows the printing of high-thickness films, was used to produce the sensor. The developed sensor was characterized by Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM), demonstrating good electrochemical behavior with a well-defined peak corresponding to the redox probe and a low background current. The optimization process focused on analyzing and discussing the ink manufacturing process and characterizing the materials used. The performance of the fabricated printed electrode was evaluated using a potassium ferrocyanide probe as a model redox system. The proposed sensor has the potential for use in electroanalytical determinations and can be produced at a low cost of US$ 0.897 per unit. This study aims to contribute to the development of printed sensors that can be produced on a large scale, are disposable, and can be used to determine different analytes.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"36 11","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141949462","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

Application of A Discrete AlGaN/GaN HEMT Sensor for In‐situ Regenerative Soot Particulate Detection 应用离散氮化铝/氮化镓 HEMT 传感器进行原位再生烟尘微粒检测

IF 3 3区化学

Electroanalysis Pub Date : 2024-08-05 DOI: 10.1002/elan.202400221

Zhiqi Gu, 小霞何, Bin Miao, Zhan Xu, Shuxian Li, Jiadong Li

引用次数: 0

Rapid and reliable determination of sulfide and sulfite in food by a multianalyte electrochemical sensor based on nanoporous gold 利用基于纳米多孔金的多分析物电化学传感器快速可靠地测定食品中的硫化物和亚硫酸盐

IF 3 3区化学

Electroanalysis Pub Date : 2024-07-29 DOI: 10.1002/elan.202400213

Xiaolei Wang, Xiaoyan Qi, Ruijun Liu, Ting Cai, Zihan Huang, Sen Wang, Xia Wang

引用次数: 0

Covalent and non-covalent approach for SWCNT-containing macromolecular structure formation for palladium accumulation 利用共价和非共价方法形成含 SWCNT 的大分子结构以积累钯金

IF 2.7 3区化学

Electroanalysis Pub Date : 2024-07-28 DOI: 10.1002/elan.202400077

Karolina H. Markiewicz, Joanna Breczko, Sławomir Wojtulewski, Agnieszka Z. Wilczewska, Krzysztof Winkler

{"title":"Covalent and non-covalent approach for SWCNT-containing macromolecular structure formation for palladium accumulation","authors":"Karolina H. Markiewicz, Joanna Breczko, Sławomir Wojtulewski, Agnieszka Z. Wilczewska, Krzysztof Winkler","doi":"10.1002/elan.202400077","DOIUrl":"10.1002/elan.202400077","url":null,"abstract":"In this study, novel materials combining palladium-imprinted polymers (PdIP) with single-walled carbon nanotubes (SWCNTs) were developed to modify screen-printed electrodes (SPEs) and tested as sensors for detecting palladium ions. The arrangement of the SWCNTs-PdIP network is crucial for the electrochemical performance of the material. Therefore, we compared two types of materials: one with covalent linkages and the other with non-covalent linkages between the SWCNTs and the polymer. The materials were characterized using Fourier transform infrared spectroscopy, Raman spectroscopy, thermogravimetric analysis, scanning electron microscopy, and porosimetry. Cyclic and differential pulse voltammetry demonstrated a significant improvement in the electrochemical properties of the material with covalent linkages between PdIP and SWCNTs. The results confirmed the performance of the proposed SWCNTs-X/PdIP-based electrochemical sensor for detecting palladium ions. They showed a linear relationship in the concentration range of 0.06–1.5 mmol L−1, and the estimated limit of detection (LOD) was 0.026159 mmol L−1 (S/N=3). The constructed sensor showed high analytical sensitivity (675.46 μA mmol−1 L cm−2), good repeatability (RSD=4.05 %), and recovery (97 %).","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"36 11","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141873059","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

Development of spherical bismuth nanoparticles modified electrode for analysis of heavy metal ions in seawater samples using SWASV technique 利用 SWASV 技术开发用于分析海水样品中重金属离子的球形纳米铋颗粒改性电极

IF 3 3区化学

Electroanalysis Pub Date : 2024-07-25 DOI: 10.1002/elan.202400107

Juthamas Boontungtang, Phetlada Sanchayanukun, Karaked Tedsri, Sasithorn Muncharoen

引用次数: 0

Quantification of the association constant of Caffeic Acid‐cyclodextrin complex using a Novel Micro‐Conductometric sensor for Bitter Taste Masking of Caffeic Acid 利用新型微电导传感器量化咖啡酸-环糊精复合物的结合常数，以掩盖咖啡酸的苦味

IF 3 3区化学

Electroanalysis Pub Date : 2024-07-23 DOI: 10.1002/elan.202400223

Jihen Kallel, Emmanuel Aina, Pedro Marotte, Claire Bordes, Yves Chevalier, Souhaira Hbaieb, Nicole Jaffrezic-Renault

引用次数: 0

A simple electrochemical approach for the rapid determination of cannabinoid designer drug ADB‐BUTINACA 快速测定大麻素设计药物 ADB-BUTINACA 的简单电化学方法

IF 3 3区化学

Electroanalysis Pub Date : 2024-07-22 DOI: 10.1002/elan.202400186

Ivana Novak

引用次数: 0

Gut-on-chip with integrated sensors: Enables in-situ monitoring and real-time evaluation of the chip 集成传感器的肠道芯片：可对芯片进行原位监测和实时评估

IF 2.7 3区化学

Electroanalysis Pub Date : 2024-07-15 DOI: 10.1002/elan.202400188

Yan Li, Zhiyuan Xiang, Zihong Yuan, Huaping Zhang, Aliu Shi

{"title":"Gut-on-chip with integrated sensors: Enables in-situ monitoring and real-time evaluation of the chip","authors":"Yan Li, Zhiyuan Xiang, Zihong Yuan, Huaping Zhang, Aliu Shi","doi":"10.1002/elan.202400188","DOIUrl":"10.1002/elan.202400188","url":null,"abstract":"The rapid development of organ-on-chip (OOC) technology has been propelled by advancements in micro-nanofabrication processes and cell culture technologies. Researchers envision OOCs as models capable of simulating the functionality and structure of specific organs, aiming to develop microenvironmental models that encapsulate key physiological parameters. The gut has long been one of the most important organs in the human body, crucial for ensuring the digestion and absorption of nutrients and maintaining interconnected functions with other organs. Consequently, the development of gut-on-chip (GOC) has garnered significant attention. Integrating sensors into GOCs capable of monitoring relevant physical and chemical parameters within the chip is imperative for evaluating the functionality of the internal environment. This review summarizes and outlines integrated sensor technologies for GOCs, introduces manufacturing processes for OOCs, reviews relevant technologies for integrating microsensors with OOCs, and examines works combining sensors and GOCs to monitor simulated physiological parameters such as trans-epithelial resistance, oxygen levels, and other parameters. Additionally, attention is given to relevant technologies from other OOCs that could be applicable for monitoring in GOCs, providing insights for GOC detection technologies.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"36 9","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141646613","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