Results 61 to 70 of about 4,965 (177)

THERMODYNAMICS OF COMPLEX FORMATION OF COPPER (II) WITH ISONICOTINAMIDE AND ACID-BASIC EQUILIBRIUM OF LIGAND IN WATER-ORGANIC SOLUTIONS

Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2019
The stability constants of copper complexes with isonicotinamide and the ligand protonation constants in a range of compositions of a water-ethanol solvent of 0.0 – 0.7 molar fractions of ethanol at 298.2 K and an ionic strength of the medium 0.25 ...
N.A. Chesnokova, A.S. Gushchina, N.N. Kuranova   +2 more
doaj   +1 more source

Novel Ionophore for the Potentiometric Determination of Cetirizine Hydrochloride in Pharmaceutical Formulations and Human Urine

International Journal of Electrochemical Science, 2009
Cetirizine (CT) membrane sensors of conventional (CE) and carbon paste (CPE) have been prepared, based on β-cyclodextrin (βCD) as ionophore and potassium tetrakis[3,5-bis(trifluoro-methyl) phenyl]borate (KTFPB) as anionic membrane additive.
Nashwa M.H. Rizk, Samah S. Abbas, Fathy A. EL-Sayed, Ahmed Abo-Bakr   +3 more
doaj   +1 more source

Improvement of Carbon Paste Ion Selective Electrode Response by Using Room Temperature Ionic Liquids (RTILs) and Multi-Walled Carbon Nanotubes (MWCNTs)

International Journal of Electrochemical Science, 2009
In this work by using room temperature ionic liquids (RTILs) and multi-walled carbon nanotubes (MWCNTs), response of a cerium carbon paste potentiometric sensor was modified.
Mohammad Reza Ganjali, Hamid Khoshsafar, Ali Shirzadmehr, Mehran Javanbakht, Farnoush Faridbod   +4 more
doaj   +1 more source

Quantitative Analysis of Pseudoephedrine in Formulation by Potentiometric Membrane Sensor; Computational Investigation

International Journal of Electrochemical Science, 2009
A potentiometric electrode was developed for the rapid determination of pseudoephedrine hydrochloride in pharmaceutical preparations. The electrode incorporates a PVC membrane with a pseudoephedrine-tetraphenyl borate ion-pair complex.
Mohammad Reza Ganjali, Aidin Alipour, Siavash Riahi, Bagher Larijani, Parviz Norouzi   +4 more
doaj   +1 more source

Recent Developments and Challenges in Solid-Contact Ion-Selective Electrodes

Sensors
Solid-contact ion-selective electrodes (SC-ISEs) have the advantages of easy miniaturization, even chip integration, easy carrying, strong stability, and more favorable detection in complex environments.
Lili Gao, Ye Tian, Wenyue Gao, Guobao Xu
doaj   +1 more source

Capacitive Coulometric Readout of Polyaniline Membrane-Based pH Sensors in Combination with Cyclic Voltammetry and Electrochemical Impedance Spectroscopy

Membranes
In this study, a polyaniline (PANI)-based solid-contact pH sensor was fabricated, and its amperometric and coulometric response was investigated both without and in series with capacitors (10 and 47 µF).
Tingting Han, Tao Song, Dongxue Han, Li Niu   +3 more
doaj   +1 more source

3D Printed Ion-Selective Electrodes Enriched with ZnO Nanoparticles for Potassium Detection

Sensors
Ion-selective electrodes (ISEs) are widely used analytical tools for the determination of specific ions in a variety of analytical applications due to their simplicity, selectivity, and low cost.
Ita Hajdin, Ante Prkić
doaj   +1 more source

Self‐Powered Biomimetic Pressure Sensor Based on Mn–Ag Electrochemical Reaction for Monitoring Rehabilitation Training of Athletes

Advanced Science
Self‐powered pressure detection using smart wearable devices is the subject of intense research attention, which is intended to address the critical need for prolonged and uninterrupted operations.
Ziyan Yang, Qingzhou Wang, Huixin Yu, Qing Xu, Yuanyue Li, Minghui Cao, Rajendra Dhakal, Yang Li, Zhao Yao   +8 more
doaj   +1 more source

The Potentiometric Quantification of Chondroitin Sodium Sulfate Using Ion-Selective Electrodes

Журнал органічної та фармацевтичної хімії
Chondroitin sodium sulfate is an anionic polysaccharide widely used in pharmaceutical practice as an active ingredient of mono- and multicomponent medicinal products, and its quantitative determination is an essential stage of the quality control. It has
Andrii S. Koptielov, Vitaliia I. Plyska, Olena V. Bevz, Olha V. Rudakova, Nataliia Yu. Bevz, Yaroslav I. Studenyak   +5 more
doaj   +1 more source

Carbon Paste Electrodes for Antibiotic Electrochemical Quantification: State of the Art

Chemosensors
Antibiotics are used primarily in human and veterinary medicine to treat various infections. They have also found applications in animal farms and aquaculture as growth promotors, with the aim of increasing food production.
Daniela Partene, Iulia Gabriela David, Mihaela-Carmen Cheregi, Emilia-Elena Iorgulescu, Hassan Noor   +4 more
doaj   +1 more source