Results 11 to 20 of about 4,821 (159)

A scanning tunneling microscopy based potentiometry technique and its application to the local sensing of the spin Hall effect

AIP Advances, 2017
A scanning tunneling microscopy based potentiometry technique for the measurements of the local surface electric potential is presented. A voltage compensation circuit based on this potentiometry technique is developed and employed to maintain a desired ...
Ting Xie, Michael Dreyer, David Bowen, Dan Hinkel, R. E. Butera, Charles Krafft, Isaak Mayergoyz   +6 more
doaj   +1 more source

Cucurbit[8]uril-Based Potentiometric Sensor Coupled to HPLC for Determination of Tetracycline Residues in Milk Samples

Chemosensors, 2022
The determination of chlortetracycline, doxycycline, oxytetracycline, and tetracycline in milk samples by HPLC coupled to a cucurbit[8]uril-based potentiometric sensor is herein presented.
Renato L. Gil, Célia M. P. G. Amorim, Maria da Conceição B. S. M. Montenegro, Alberto N. Araújo   +3 more
doaj   +1 more source

The Novel Potentiometric Approach to Antioxidant Capacity Assay Based on the Reaction with Stable Radical 2,2′-diphenyl-1-picrylhydrazyl

Antioxidants, 2022
For the first time, new possibilities of using the DPPH• as a signal-forming oxidant molecule with potentiometric detection are shown. The CV method confirmed the presence of a quasi-reversible potential-determining system DPPH•/DPPH-H under experimental
Elena Gerasimova, Elena Gazizullina, Sofya Kolbaczkaya, Alla Ivanova   +3 more
doaj   +1 more source

Dissolution périodique du nickel dans l'acide nitrique en présence de chlorures

CHIMIA, 1975
In the presence of Cl-, nickel dissolves periodically in HNO3 for normalities between 9 < N < 17. This phenomenon is investigated by potentiometry and thermometry.
Vincent J. Farage, J.-J. Schaer, D. Janjic   +2 more
doaj   +1 more source

Preparation a multi-walled carbon nanotubes-carbon paste electrode based on a sulfanyl phenyl Schiff’s base for selective determination of mercury(II) in environmental water samples [PDF]

Journal of Water and Environmental Nanotechnology, 2019
The electrochemical property of a recently synthesized ligand, 3-((3-mercaptophenyl) aminomethyl)benzene-1,2-diol has been investigated with construction of a modified carbon paste electrode to find out of mercury ions in real samples.
Kamal Alizadeh, Ziba Yaghouby, Azim Shams   +2 more
doaj   +1 more source

Electrochemical Analysis of Heavy Metal Ions Using Conducting Polymer Interfaces

Electrochem, 2022
Conducting polymers (CPs) are highly conjugated organic macromolecules, where the electrical charge is transported in intra- and inter-chain pathways. Polyacetylene, polythiophene and its derivatives, polypyrrole and its derivatives, and polyaniline are ...
Gerardo Salinas, Bernardo A. Frontana-Uribe   +1 more
doaj   +1 more source

Developing a potentiometric sunset yellow selective electrode and its applications

Cumhuriyet Science Journal, 2020
We developed a potentiometric ion-selective electrode (ISE) for detecting the food dye sunset yellow (SY). Sunset yellow-Methyltrioctylammonium chloride ion pairs were synthesized.
Gülşah Saydan Kanberoğlu, Mehmet Aydın   +1 more
doaj   +1 more source

Wide pH Range Potentiometric and Spectrophotometric Investigation into the Acidic Constants of Quercetin, Luteolin and l-Ascorbic Acid in Aqueous Media

Applied Sciences, 2023
It is now well established that the dissociation constants of an organic compound are characteristic of the types of groups, or the combinations of groups, contained in it.
Luana Malacaria, Emilia Furia
doaj   +1 more source

NO2 Detection Using Microcantilever Based Potentiometry

Sensors, 2008
A highly sensitive and novel sensor platform for gases and volatile chemicals using microcantilever based potentiometry is reported. A resonant cantilever is used to detect the changes in surface work functions of functionalized substrates caused by ...
Goutam Koley, Muhammad Qazi
doaj   +1 more source

Redox Sensor Array with 23.5-μm Resolution for Real-Time Imaging of Hydrogen Peroxide and Glutamate Based on Charge-Transfer-Type Potentiometric Sensor

Sensors, 2021
Towards clarifying the spatio-temporal neurotransmitter distribution, potentiometric redox sensor arrays with 23.5-µm resolution were fabricated. The sensor array based on a charge-transfer-type potentiometric sensor comprises 128×128 pixels with gold ...
Tatsuya Iwata, Yuki Okumura, Koichi Okumura, Tomoko Horio, Hideo Doi, Kazuhiro Takahashi, Kazuaki Sawada   +6 more
doaj   +1 more source