Adsorption of N,N′-dimethylthiourea at a mercury/aqueous solution of NaClO4 interface; dependence on the supporting electrolyte concentration

2006 ◽  
Vol 51 (27) ◽  
pp. 6179-6185 ◽  
Author(s):  
Agnieszka Nosal-Wiercińska ◽  
Grażyna Dalmata
Keyword(s):  
Aqueous Solution ◽  
Electrolyte Concentration ◽  
Supporting Electrolyte

scholarly journals Adsorption of Selected Amino Acids at the Mercury/Aqueous Solution Interface from the Chlorate (VII) and Its Dependence on the Supporting Electrolyte Concentration

2015 ◽  
Vol 33 (6-8) ◽  
pp. 553-558 ◽  
Author(s):  
Agnieszka Nosal-Wiercińska ◽  
Mariusz Grochowski ◽  
Małgorzata Wiśniewska ◽  
Katarzyna Tyszczuk-Rotko ◽  
Selehattin Yilmaz ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Amino Acids ◽  
Electrolyte Concentration ◽  
Supporting Electrolyte ◽  
Solution Interface

scholarly journals Electroreduction of Bi(III) ions in the aspect of expanding the “cap-pair” effect: the role of the nanosized active complexes

2021 ◽  
Author(s):  
Agnieszka Nosal-Wiercińska ◽  
Marlena Martyna ◽  
Sławomira Skrzypek ◽  
Anna Szabelska ◽  
Małgorzata Wiśniewska
Keyword(s):  
Electrolyte Concentration ◽  
Supporting Electrolyte ◽  
Acceleration Process ◽  
Organic Substances ◽  
Effect Mechanism ◽  
Solution Interface

AbstractThe paper discusses the electroreduction of Bi(III) ions in the aspect of expanding the “cap-pair” effect.The “cap-pair” rule is associated with the acceleration of the electrode’s processes by organic substances. The interpretation of the “cap-pair” effect mechanism was expanded to include the effect of supporting electrolyte concentration on the acceleration process and the type of electrochemical active as well as used protonated organic substances. It has also been shown that the phenomena occurring at the electrode/solution interface can influence a change in the dynamics of the electrode’s process according to the “cap-pair” rule.

scholarly journals Voltammetric Determination of LSD with a Schiff Base – Chemically Modified Electrode in Aqueous Solution

2020 ◽  
Vol 9 (4) ◽  
pp. 440-458
Author(s):  
Maria Fernanda M. Ribeiro ◽  
Erica N. Oiye ◽  
Juliana M. T. Katayama ◽  
José W. C. Junior ◽  
Edward R. Dockal ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Schiff Base ◽  
Forensic Science ◽  
Carbon Paste Electrode ◽  
Supporting Electrolyte ◽  
Modified Electrodes ◽  
Schiff Base Complexes ◽  
Carbon Paste ◽  
Simple Modification ◽  
Paste Electrode

In recent years, practical, inexpensive, and highly specific electroanalytical methods based on modified electrodes have been increasingly developed for forensic science. Simple modification of the carbon paste electrode with Schiff base complexes has become a promising strategy to detect and quantify narcotics. In this context, we aimed to develop voltammetric methods to quantify lysergic acid diethylamide (LSD) by using a carbon paste electrode modified with the complex [UO2(Ac-ophen)]·H2O. The use of an aqueous solution of KCl as supporting electrolyte makes the methodology less polluting, which contrasts with methods that still employ toxic solvents. The developed method for Differential Pulse Voltammetry provides a linear response at various concentrations of LSD and affords analytical curves with standard deviation, detection, and quantification limits around 2.45, 0.625, and 2.08 μmol L-1, respectively. The recovery values of 103 and 108% prove that the developed method is suitable for application in forensic science.

scholarly journals The interactions between lipase and pyridinium ligands investigated by electrochemical and spectrophotometric methods

2016 ◽  
Vol 6 (1) ◽  
pp. 91
Author(s):  
Simona Patriche ◽  
Elena Georgiana Lupu ◽  
Andreea Cârâc ◽  
Rodica Mihaela Dinică ◽  
Geta Cârâc
Keyword(s):  
Aqueous Solution ◽  
Essential Role ◽  
Supporting Electrolyte ◽  
Exchange Process ◽  
Carbon Electrode ◽  
Ionic Exchange ◽  
Spectrophotometric Methods ◽  
Lipase Enzyme ◽  
Vis Spectroscopy ◽  
The Stability

<p class="PaperAbstract"><span lang="EN-GB">The interaction between pyridinium ligands derived from 4,4’-bipyridine (N,N’-bis(p-bromophenacyl)-4,4’-bipyridinium dibromide – Lr) and (N,N’-bis(p-bromophenacyl)-1,2-bis (4-pyridyl) ethane dibromide – Lm) with lipase enzyme was evaluated. The stability of the pyridinium ligands, having an essential role in biological systems, in 0.1 M KNO<sub>3</sub> as supporting electrolyte is influenced by the lipase concentration added. The pH and conductometry measurements in aqueous solution suggest a rapid ionic exchange process. The behavior of pyridinium ligands in the presence of lipase is investigated by cyclic voltammetry and UV/Vis spectroscopy, which indicated bindings and changes from the interaction between them. The voltammograms recorded on the glassy carbon electrode showed a more intense electronic transfer for the Lr interaction with lipase compared to Lm, which is due to the absence of mobile ethylene groups from Lr structure.</span></p>

The Effect of Supporting Electrolyte Concentration on Zinc Electrodeposition Kinetics from Methimazole Solutions

2019 ◽  
Vol 31 (6) ◽  
pp. 1141-1149 ◽  
Author(s):  
Jolanta Nieszporek ◽  
Dorota Gugała‐Fekner ◽  
Krzysztof Nieszporek
Keyword(s):  
Electrolyte Concentration ◽  
Supporting Electrolyte ◽  
Zinc Electrodeposition
Sign in / Sign up

Export Citation Format

Share Document