Results 31 to 40 of about 177,068 (269)

Polarographic and Voltammetric Determination of meso-Tetrakis(4-sulfonatophenyl)porphyrin Tetrasodium Salt at Mercury Electrodes

International Journal of Electrochemical Science, 2007
The electrochemical behavior of meso-tetrakis(4-sulfonatophenyl) porphyrin tetrasodium salt (TPPS4) was investigated in aqueous media of BR buffer in pH range 2-12.
Adela Rumlerova-Lipsová, Jiri Barek, Pavel Drasar, Karel Zelenka and Karolina Peckova
doaj   +2 more sources

Quantification of Sub-Nanomolar Levels of Gallic Acid by Adsorptive Stripping Voltammetry

International Journal of Electrochemical Science, 2011
The voltammetric behavior of gallic acid (GA) on a hanging mercury drop electrode (HMDE) has been investigated by cathodic adsorptive stripping voltammetry (AdCSV).
S. Abbasi, A. Daneshfar, S. Hamdghadareh, A. Farmany   +3 more
doaj   +1 more source

A Magnetic Nanocomposite Modifier for Improved Ultrasensitive Detection of Hexavalent Chromium in Water Samples

Chemosensors, 2021
In this work, different electrodes were employed for the determination of Cr(VI) by the cathodic square-wave voltammetry (SWV) technique and the square-wave adsorptive stripping voltammetry (SWAdSV) technique in combination with ...
Nuša Hojnik, Olivija Plohl, Matjaž Finšgar   +2 more
doaj   +1 more source

Selective Preconcentration of Ultra Trace Copper (II) ion Using Square Wave Cathodic Adsorptive Stripping Voltammetry at Modified Carbon Past Electrode

International Journal of Electrochemical Science, 2020
Ultra-trace copper determination in natural water and human hair samples was performed using stripping voltammetric based on Square wave cathodic adsorptive.
Awad A. Al-rashdi, Ahmed A. Gahlan, Othman.A. Farghaly   +2 more
doaj   +1 more source

Determinação eletroanalítica do hormônio progesterona em fármacos utilizando o eletrodo de filme de bismuto [PDF]

, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em QuímicaEsse trabalho descreve o desenvolvimento de um método eletroanalítico para determinação do hormônio ...
Lima, Camila Alves de
core  

Electrochemical Pathways for Nitrate Conversion to Ammonia: From Environmental Challenges to Ammonia Economy

Advanced Functional Materials, EarlyView.
This perspective presents recent advances in electrocatalytic nitrate reduction, focusing on reaction mechanisms, catalyst design, and electrolyzer configurations. Key challenges in selectivity, stability, and practical wastewater treatment are highlighted, while future directions for advancing sustainable ammonia synthesis and nitrate remediation are ...
Xintong Li, Yunpeng Zuo, Xiaoran Zhang, Jieqiong Shan, Kenneth Mei Yee Leung, Bin Liu, Peter Strasser, Adrian Fisher, Zonglong Zhu, Xin Wang   +9 more
wiley   +1 more source

Complexation-Based Detection of Nickel(II) at a Graphene-Chelate Probe in the Presence of Cobalt and Zinc by Adsorptive Stripping Voltammetry

Sensors, 2017
The adsorptive stripping voltammetric detection of nickel and cobalt in water samples at metal film electrodes has been extensively studied. In this work, a novel, environmentally friendly, metal-free electrochemical probe was constructed for the ultra ...
Keagan Pokpas, Nazeem Jahed, Priscilla G. Baker, Emmanuel I. Iwuoha   +3 more
doaj   +1 more source

Identifying potential sources of iron-binding ligands in coastal Antarctic environments and the wider Southern Ocean

Frontiers in Marine Science, 2022
The availability of iron (Fe) to marine microbial communities is enhanced through complexation by ligands. In Fe limited environments, measuring the distribution and identifying the likely sources of ligands is therefore central to understanding the ...
Abigail J.R. Smith, Talitha Nelson, Lavenia Ratnarajah, Cristina Genovese, Karen Westwood, Karen Westwood, Thomas M. Holmes, Matthew Corkill, Ashley T. Townsend, Elanor Bell, Kathrin Wuttig, Delphine Lannuzel   +11 more
doaj   +1 more source

Preparação e aplicação de um eletrodo de filme de bismuto para determinação eletroanalítica de Sn(IV) e sulfadiazina [PDF]

, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Quimica, Florianópolis, 2010Este trabalho descreve o desenvolvimento de métodos eletroanalíticos que demonstram o ...
Campestrini, Iolana
core  

CO2‐to‐CO Conversion in a Gas‐Fed, Zero‐Gap, PEM Electrolyzer Enabled by Polycations and Nitrogen‐Doped Carbon‐Supported Cobalt Nanoparticles

Advanced Functional Materials, EarlyView.
A gas‐fed, zero‐gap, PEM CO2 electrolyzer is realized by incorporating PDDA+ ions onto the carbonaceous Co/N‐C electrocatalyst, with gaseous H2 and CO2 fed into the anode and cathode, respectively. Operating without an aqueous electrolyte, the system sustains a peak FECO of 65.1% at 100 mA cm−2. ABSTRACT Electrochemical carbon dioxide reduction (ECO2R)
Yuen Leong Chow, Hsi‐Wen Wu, Aimin Li, Yalou Guo, Duhong Chen, Jie Zhang, Paul A. Webley   +6 more
wiley   +1 more source