International Journal of Electrochemical Science最新文献_第5页

Electrochemical and surface characterization of the corrosion of 6061 aluminum alloy and its composite with SiC in hydrochloric acid solutions 6061铝合金及其SiC复合材料在盐酸溶液中腐蚀的电化学和表面表征

IF 1.3 4区化学

International Journal of Electrochemical Science Pub Date : 2025-07-22 DOI: 10.1016/j.ijoes.2025.101133

Namitha Kedimar , Padmalatha Rao , Suma A. Rao

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Influence of flow velocity on electrochemical corrosion resistance of carbon steel and 316 L stainless steels in 3.5 % sodium chloride solution 流速对3.5 %氯化钠溶液中碳钢和316 L不锈钢耐电化学腐蚀性能的影响

IF 1.3 4区化学

International Journal of Electrochemical Science Pub Date : 2025-07-22 DOI: 10.1016/j.ijoes.2025.101130

Guofu Ou , Xudong Liu , Xin Huang , Wangping Wu

{"title":"Influence of flow velocity on electrochemical corrosion resistance of carbon steel and 316 L stainless steels in 3.5 % sodium chloride solution","authors":"Guofu Ou , Xudong Liu , Xin Huang , Wangping Wu","doi":"10.1016/j.ijoes.2025.101130","DOIUrl":"10.1016/j.ijoes.2025.101130","url":null,"abstract":"<div><div>A newly designed rotating corrosion experimental setup was constructed to study the electrochemical corrosion resistance of 20# carbon steel and 316 L stainless steels in 3.5 % NaCl corrosive solution combining electrochemical measurements and surface analysis techniques. The effect of flow velocity on the electrochemical corrosion resistance of steel substrates in corrosive solution was investigated using a combination of electrochemical testing and computational fluid dynamics (CFD) simulation. The electrochemical corrosion tests, including open circuit potential, electrochemical impedance spectroscopy, and polarization measurements, were conducted to assess the corrosion behavior of the materials under different flow velocities. The results revealed that the corrosion products on 20# carbon steel formed a loose and porous structure, whereas the surface of 316 L stainless steel remained smooth, exhibiting significantly good corrosion resistance. Moreover, the corrosion rates of 20# carbon steel and 316 L stainless steel exhibit a nonlinear dependence on flow velocity, with a distinct critical flow velocity identified. Specifically, the critical flow velocities for 20# carbon steel and 316 L stainless steel were 2 m/s and 1.5–2 m/s. Prior to reaching the critical flow velocity, the overall corrosion rate decreased as flow velocity increased. However, beyond this threshold, the corrosion rate increased due to the localized breakdown of the protective corrosion product film. In addition, CFD simulations were conducted to investigate the hydrodynamic factors, and the results showed that the magnitude of fluid-induced shear stress did not exhibit a clear positive correlation with the corrosion rate.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 10","pages":"Article 101130"},"PeriodicalIF":1.3,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144694836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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A comprehensive review of electrochemical lactate biosensors: Principles, innovations, and future perspectives 电化学乳酸生物传感器的综述：原理、创新和未来展望

IF 1.3 4区化学

International Journal of Electrochemical Science Pub Date : 2025-07-22 DOI: 10.1016/j.ijoes.2025.101132

Haomiao Yang , Shuangshuang Yan

{"title":"A comprehensive review of electrochemical lactate biosensors: Principles, innovations, and future perspectives","authors":"Haomiao Yang , Shuangshuang Yan","doi":"10.1016/j.ijoes.2025.101132","DOIUrl":"10.1016/j.ijoes.2025.101132","url":null,"abstract":"<div><div>Lactate, a pivotal metabolite in cellular energetics, has garnered significant attention as a biomarker for assessing physiological status in sports science and clinical diagnostics. The limitations of traditional invasive lactate measurement methods have spurred the development of electrochemical biosensors, offering pathways for real-time, non-invasive, and continuous monitoring. This review provides a comprehensive overview of the progress in electrochemical lactate biosensors, with a particular focus on their application in enhancing sports science and performance monitoring. Fundamental principles, including amperometric, voltammetric, and potentiometric detection, alongside the roles of lactate oxidase and lactate dehydrogenase, are discussed. Recent advancements highlight the transformative impact of nanomaterials such as graphene, carbon nanotubes, metal/metal oxide nanoparticles, and MXenes in improving sensor sensitivity, stability, and selectivity. Innovations in fabrication techniques, including screen printing, 3D printing, and microfluidics, are paving the way for sophisticated wearable devices targeting sweat, saliva, and interstitial fluid. The application of these biosensors in sports for determining lactate thresholds, monitoring exercise intensity, managing fatigue, and optimizing training is critically examined. Despite significant strides, challenges related to analytical performance, biofluid correlation with blood, sensor-body interface, and data interpretation persist. Future directions point towards multiplexed sensing, integration with the Internet of Things (IoT), and the application of artificial intelligence and machine learning for advanced data analytics, heralding an era of personalized and data-driven athletic training and healthcare.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 10","pages":"Article 101132"},"PeriodicalIF":1.3,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144704581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Simultaneous Electrochemical Impedance Spectroscopy and Magnetic Resonance Imaging analysis of lithium-ion batteries 锂离子电池的同步电化学阻抗谱和磁共振成像分析

IF 1.3 4区化学

International Journal of Electrochemical Science Pub Date : 2025-07-16 DOI: 10.1016/j.ijoes.2025.101129

Andreas Markert , Max Morales , Christoph Guntlin , Hermann Nirschl , Gisela Guthausen

{"title":"Simultaneous Electrochemical Impedance Spectroscopy and Magnetic Resonance Imaging analysis of lithium-ion batteries","authors":"Andreas Markert , Max Morales , Christoph Guntlin , Hermann Nirschl , Gisela Guthausen","doi":"10.1016/j.ijoes.2025.101129","DOIUrl":"10.1016/j.ijoes.2025.101129","url":null,"abstract":"<div><div>Electrochemical Impedance Spectroscopy and Magnetic Resonance Imaging (MRI) were measured simultaneously on Lithium-Ion batteries. The motivation for developing this measurement method was the following: While Electrochemical Impedance Spectroscopy provides integral information on processes in the battery, MRI adds spatially resolved information on structures and their changes in the battery on a microscopic length scale. This offers combined and more comprehensive information on microscopic and integral levels. A significant benefit of simultaneous measurement is that the battery is in the same state as well as that it allows continuous measurement of a specific battery thus avoiding replacements and rest times when exchanging parts of the experiments. Comparative measurements of Electrochemical Impedance Spectroscopy, performed in parallel to MRI and outside of the MRI setup, however, require optimal decoupling of the electromagnetic fields involved in both techniques. The current version shows only minor differences in the impedances measured below 20 Hz. On the other hand, images were acquired with and without parallel Electrochemical Impedance Spectroscopy, the images show the same structural features. Differences are on the noise level of the MRI measurement. The combination of results of both techniques allows for a thorough detection and identification of the batteries behavior. For example, in the case of two fresh batteries, increased resistance could be assigned to inhibited ionic transport paths due to a misplaced separator. In aged and defective batteries, the combination of both techniques revealed the loss of electrolyte to be the main source of degradation.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 10","pages":"Article 101129"},"PeriodicalIF":1.3,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144653685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 porous 304L Stainless steel substrate enhanced with graphene and platinum for hydrogen mitigation in passive autocatalytic recombiners 用石墨烯和铂增强的多孔304L不锈钢衬底的开发，用于被动自催化重组器中的氢缓释

IF 1.3 4区化学

International Journal of Electrochemical Science Pub Date : 2025-07-14 DOI: 10.1016/j.ijoes.2025.101128

L. De Micheli, G. Silvestrin, R.F.B. de Souza, A. Oliveira Neto, C. Giovedi

{"title":"Development of a porous 304L Stainless steel substrate enhanced with graphene and platinum for hydrogen mitigation in passive autocatalytic recombiners","authors":"L. De Micheli, G. Silvestrin, R.F.B. de Souza, A. Oliveira Neto, C. Giovedi","doi":"10.1016/j.ijoes.2025.101128","DOIUrl":"10.1016/j.ijoes.2025.101128","url":null,"abstract":"<div><div>The rapid expansion of the hydrogen economy poses significant safety challenges related to hydrogen handling across a wide range of applications. This study investigates the feasibility of using porous sintered 304 L stainless steel, coated with graphene and doped with platinum, as an advanced material for passive autocatalytic recombiners (PARs) to mitigate hydrogen release and improve operational safety. Detailed characterization using scanning electron microscopy (SEM), X-ray diffraction (XRD), and Raman spectroscopy confirmed the uniform deposition of graphene and platinum layers, as well as structural features such as spinel phase segregation. The low surface wettability, attributed to the armchair configuration of graphene edges, further enhances the material’s suitability for catalytic recombination reactions in humid environments. Hydrogen removal tests demonstrated that an optimized platinum doping level of 0.5 wt% combined with a controlled substrate porosity of 50 µm resulted in a maximum hydrogen conversion efficiency of 40 %. These results highlight the critical influence of doping concentration and pore architecture on catalytic performance and overall PAR efficiency. Overall, this research provides valuable insights into the development of high-performance, passive hydrogen recombination systems, offering a promising pathway to improve safety and sustainability in emerging hydrogen technologies and to advance the hydrogen industry.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 10","pages":"Article 101128"},"PeriodicalIF":1.3,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144685882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Superhydrophobic films from waste polypropylene for corrosion protection of carbon steel in 3.5 % sodium chloride solution 废聚丙烯超疏水膜在3.5% %氯化钠溶液中对碳钢的防腐

IF 1.3 4区化学

International Journal of Electrochemical Science Pub Date : 2025-07-11 DOI: 10.1016/j.ijoes.2025.101125

Junaid Saleem , Zubair Khalid Baig Moghal , Osama Fayyaz , Muddasir Nawaz , R.A. Shakoor , Gordon McKay

{"title":"Superhydrophobic films from waste polypropylene for corrosion protection of carbon steel in 3.5 % sodium chloride solution","authors":"Junaid Saleem , Zubair Khalid Baig Moghal , Osama Fayyaz , Muddasir Nawaz , R.A. Shakoor , Gordon McKay","doi":"10.1016/j.ijoes.2025.101125","DOIUrl":"10.1016/j.ijoes.2025.101125","url":null,"abstract":"<div><div>The corrosion inhibition capabilities of polymer-based coatings are often limited by their reliance on additives, chemicals, and complex fabrication methods. In this study, we repurpose waste polypropylene (PP) into functional films using a tandem dissolution and spin-casting process, enabling direct application onto metal surfaces for enhanced corrosion resistance. This method eliminates the need for chemical grafting or nanofiller incorporation, offering a simpler and more sustainable route to surface protection. The resulting films exhibit a maximum water contact angle (CA) of 157°, indicating superhydrophobic behavior. Electrochemical impedance spectroscopy (EIS) measurements show a marked improvement in charge transfer resistance (R<sub>ct</sub>), increasing from 184 Ω·cm² for bare carbon steel to 16,000 Ω·cm² for the PP-coated surface. By utilizing plastic waste as a feedstock, this approach presents an environmentally responsible and cost-effective alternative to conventional polymer-based corrosion inhibitors.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 10","pages":"Article 101125"},"PeriodicalIF":1.3,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

MOF-templated synthesis of Co4S3-Co9S8 heterojunctions embedded in N-doped carbon for enhanced hydrogen evolution mof模板法合成嵌入n掺杂碳的Co4S3-Co9S8异质结以促进析氢

IF 1.3 4区化学

International Journal of Electrochemical Science Pub Date : 2025-07-08 DOI: 10.1016/j.ijoes.2025.101127

Xiaokai Zhao , Yaqi Bi , Mozhou Li , Peipei Cui , Zhaodi Huang

{"title":"MOF-templated synthesis of Co4S3-Co9S8 heterojunctions embedded in N-doped carbon for enhanced hydrogen evolution","authors":"Xiaokai Zhao , Yaqi Bi , Mozhou Li , Peipei Cui , Zhaodi Huang","doi":"10.1016/j.ijoes.2025.101127","DOIUrl":"10.1016/j.ijoes.2025.101127","url":null,"abstract":"<div><div>In this study, a novel Co<sub>4</sub>S<sub>3</sub>-Co<sub>9</sub>S<sub>8</sub> heterostructure embedded in N-doped carbon (Co<sub>4</sub>S<sub>3</sub>-Co<sub>9</sub>S<sub>8</sub>@NC) was successfully synthesized through thiourea-assisted sulfurization of a Co-MOF template. The obtained Co<sub>4</sub>S<sub>3</sub>-Co<sub>9</sub>S<sub>8</sub> heterojunction material gets benefits from the synergistic effects of heteroatom-doped carbon matrix and well-defined heterostructure with many active sites. As result, the heterojunction material show enhanced hydrogen evolution reaction (HER) performance in comparison with single-component counterparts. In 1.0 M KOH, it shows enhanced HER performance of requiring only 190 mV overpotential to reach 10 mA·cm<sup>−2</sup>, which is superior to most reported Co-based catalysts. In addition, it not only showed an almost unchanged LSV curve compared to the initial value before 2000 CV cycle, but also maintained a current density of 99.8 % during the 10 h continuous i-t test. This work provides a facile strategy for constructing high-performance Co-based heterostructured electrocatalysts for HER.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 10","pages":"Article 101127"},"PeriodicalIF":1.3,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144653684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Horseradish peroxidase biosensor based on a MWCNTs/black phosphorene nanocomposite for sensitive electrochemical detection of trichloroacetic acid and nitrite 基于MWCNTs/黑磷烯纳米复合材料的辣根过氧化物酶生物传感器用于三氯乙酸和亚硝酸盐的灵敏电化学检测

IF 1.3 4区化学

International Journal of Electrochemical Science Pub Date : 2025-07-07 DOI: 10.1016/j.ijoes.2025.101126

Fan Shi , Jiaqi Geng , Baoli Wang , Brij Mohan , Wenhua Chen , Yuxin Bi , Lianjin Jiang , Shu Deng , Shengfen Wang , Xiaoqing Li , Wei Sun

{"title":"Horseradish peroxidase biosensor based on a MWCNTs/black phosphorene nanocomposite for sensitive electrochemical detection of trichloroacetic acid and nitrite","authors":"Fan Shi , Jiaqi Geng , Baoli Wang , Brij Mohan , Wenhua Chen , Yuxin Bi , Lianjin Jiang , Shu Deng , Shengfen Wang , Xiaoqing Li , Wei Sun","doi":"10.1016/j.ijoes.2025.101126","DOIUrl":"10.1016/j.ijoes.2025.101126","url":null,"abstract":"<div><div>Developing electrochemical biosensors to detect trichloroacetic acid (TCA) and nitrite (NaNO<sub>2</sub>) helps address serious health risks by improving electron transfer in the enzyme’s active center, enabling accurate monitoring of these harmful substances in environmental and food safety applications. Herein, a novel electrochemical horseradish peroxidase (HRP) biosensor was fabricated by immobilizing on a multi-walled carbon nanotubes-black phosphorene (MWCNTs-BP) nanocomposite modified carbon ionic liquid electrode. The structure and enzyme interaction were characterized using SEM, TEM, FT-IR, and UV-Vis spectroscopy. The MWCNTs-BP composite enhances electron transfer and interfacial conductivity, enabling efficient direct communication between HRP and the electrode. Under optimal conditions, the biosensor exhibited excellent sensitivity for TCA and NaNO<sub>2</sub> detection with linear ranges of 3.0–558.0 mmol/L (LOD as 1.0 mmol/L) and 0.1–13.6 mmol/L (LOD as 0.03 mmol/L), respectively. It was successfully applied to detect TCA and NaNO<sub>2</sub> in medical facial peel solutions and pickled vegetable soaking water samples, respectively, demonstrating strong practical applicability.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 10","pages":"Article 101126"},"PeriodicalIF":1.3,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144605851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 determination of the ovarian cancer biomarker CA125 using TiO₂–ZnO nanocomposites tio2 -ZnO纳米复合材料电化学测定卵巢癌生物标志物CA125

IF 1.3 4区化学

International Journal of Electrochemical Science Pub Date : 2025-07-05 DOI: 10.1016/j.ijoes.2025.101119

Wei Zhou, Kun Wang, Lipeng Pei

{"title":"Electrochemical determination of the ovarian cancer biomarker CA125 using TiO₂–ZnO nanocomposites","authors":"Wei Zhou, Kun Wang, Lipeng Pei","doi":"10.1016/j.ijoes.2025.101119","DOIUrl":"10.1016/j.ijoes.2025.101119","url":null,"abstract":"<div><div>Early and accurate detection of ovarian cancer is essential for improving patient outcomes, as most cases are diagnosed at an advanced stage. Cancer antigen 125 (CA125) is a clinically established biomarker that plays a critical role in the diagnosis, prognosis, and recurrence monitoring of epithelial ovarian carcinoma. This study presents a dual-channel electrochemical platform employing ZnO@TiO<sub>2</sub> nanotube arrays for the immunoanalysis of CA125 in complex biological matrices. The nanostructured electrode, fabricated through a sequential hydrothermal and annealing process, exhibited vertically aligned tubular morphology with a mean length of ∼2.5 µm and shell thickness of ∼20 nm. Electrochemical measurements leveraged dopamine and cytosine as reduction and oxidation probes, respectively, enabling orthogonal signal acquisition. Differential pulse voltammetry revealed wide linear response ranges: 0.1–1000 mU∙mL<sup>−1</sup> for cytosine (R² = 0.996; LOD = 0.0002 mU∙mL<sup>−1</sup>) and 0.1–100 mU∙mL<sup>−1</sup> for dopamine (R² = 0.992; LOD = 0.0025 mU∙mL<sup>−1</sup>). Impedance spectroscopy confirmed systematic resistance increases during antibody immobilization and antigen binding. The sensor demonstrated excellent reproducibility (RSD ≤ 8.9 %), signal stability over 30 days (≥89.1 % retention), and selectivity against six common interferents with < 5 % deviation. Application in 0.2 % diluted serum showed recoveries from 99.6 % to 100.0 % and RSDs < 2.01 %, validating its performance in real matrices. The combination of core–shell architecture, dual-probe mechanism, and surface regeneration capability positions this system as a promising diagnostic platform for clinical biosensing.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 10","pages":"Article 101119"},"PeriodicalIF":1.3,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Speciation analysis of Sb(III) and Sb(V) by adsorptive stripping voltammetry in the presence of Pyrogallol red 邻苯三酚红存在下吸附溶出伏安法分析Sb（III）和Sb(V)的形态

IF 1.3 4区化学

International Journal of Electrochemical Science Pub Date : 2025-07-05 DOI: 10.1016/j.ijoes.2025.101120

Fallon Rosales , Juan José Triviño , Carlos Rojas-Romo , Claudia Núñez , Verónica Arancibia

{"title":"Speciation analysis of Sb(III) and Sb(V) by adsorptive stripping voltammetry in the presence of Pyrogallol red","authors":"Fallon Rosales , Juan José Triviño , Carlos Rojas-Romo , Claudia Núñez , Verónica Arancibia","doi":"10.1016/j.ijoes.2025.101120","DOIUrl":"10.1016/j.ijoes.2025.101120","url":null,"abstract":"<div><div>This work presents an adsorptive stripping voltammetric method for the speciation of antimony based on the formation of their complexes with Pyrogallol red (PGR). Both Sb(III) and Sb(V) form complexes with PGR, however Sb(III) forms complex rapidly whereas Sb(V) forms complex very slowly. After the Sb<sup>V</sup>-PGR complex is formed, on the surface of the mercury electrode is reduced to Sb<sup>III</sup>-PGR. Then the electrochemical signal is the reduction of Sb<sup>III</sup>-PGR complex to Sb(0). The variation of peak current with pH, accumulation time (t<sub>acc</sub>), accumulation potential (E<sub>acc</sub>), and PGR concentration (C<sub>PGR</sub>) were optimized. The best experimental conditions for Sb(III) were pH: 2.2 (0.1 mol L<sup>−1</sup>, Phosphate buffer, PB), C<sub>PGR</sub>: 3.0 μmol L<sup>−1</sup>, and E<sub>acc</sub>: −0.10 V obtaining a detection limit (DL) of 1.1 μg L<sup>−1</sup> (t<sub>acc</sub>: 35 s). When measured at 2 h, the signal of the Sb<sup>III</sup>-PGR complex is almost the same and now it is possible to appreciate the increase in the signal due to presence of Sb<sup>V</sup>-PGR complex, previously reduced to Sb<sup>III</sup>-PGR in the Hg electrode. This allows us to determine the total concentration of antimony. The developed method was validated by the determination of Sb(III) in spiked drinking water from the laboratory and spiked synthetic seawater with relative errors of less than 5.0 %. The method was successfully applied to the determination of Sb(III) and Sb<sub>total</sub> in an Industrial waste liquid sample comparing the results of Sb<sub>total</sub> by ICP-OES technique (RE: 0.6 %).</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 10","pages":"Article 101120"},"PeriodicalIF":1.3,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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