Results 31 to 40 of about 16,954 (217)

When spectroscopy fails: The measurement of ion pairing [PDF]

open access: yes, 2006
Spectroscopic techniques such as UV/vis, NMR, and Raman are powerful tools for the investigation of chemical speciation in solution. However, it is not widely recognized that such techniques do not always provide reliable information about ion ...
Hefter, G.
core   +2 more sources

Developing a potentiometric sunset yellow selective electrode and its applications

open access: yesCumhuriyet 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   +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

open access: yesApplied 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

Theoretical background of rock failure at hydraulic seam fracture and aftereffect analysis [PDF]

open access: yes, 2018
Purpose. Theoretical substantiation of the methodological foundations of possible effects and aftereffects identification of the hydraulic seam fracture (HSF) technology. Methods.
Al-Sultan, M   +3 more
core   +1 more source

NO2 Detection Using Microcantilever Based Potentiometry

open access: yesSensors, 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

open access: yesSensors, 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   +6 more
doaj   +1 more source

Uses of nitrate ion sensitive electrodes

open access: yesEclética Química, 2018
Some models of ion-selective electrodes (ISE) and other methods have been elaborated, to quantify nitrate levels in environmental samples (water, fruits, vegetables and others), using direct ...
Rubén DEL TÓRO DÉNIS   +3 more
doaj   +1 more source

Thermodynamic Solution Properties of a Biodegradable Chelant (L-glutamic-N,N-diacetic Acid, L-GLDA) and Its Sequestering Ability toward Cd2+

open access: yesMolecules, 2021
The thermodynamics of the interaction of L-glutamic-N,N-diacetic acid (GLDA) with protons was studied potentiometrically at different temperatures, ionic strengths and ionic media. Four protonation constants and corresponding enthalpy changes occurred at
Clemente Bretti   +6 more
doaj   +1 more source

Hybrid Amperometric and Potentiometric Sensing Based on a CMOS ISFET Array [PDF]

open access: yes, 2017
Potentiometry and amperometry are some of the most important techniques for electroanalytical applications. Integrating these two techniques on a single chip using CMOS technology paves the way for more analysis and measurement of chemical solutions.
Al-Rawhani, Mohammed A.   +6 more
core   +1 more source

The 1,3-Dioctadecyl-1H-imidazol-3-ium Based Potentiometric Surfactant Sensor for Detecting Cationic Surfactants in Commercial Products

open access: yesSensors, 2022
A low-cost and fast potentiometric surfactant sensor for cationic surfactants, based on the new ion-pair 1,3-dioctadecyl-1H-imidazol-3-ium-tetraphenylborate (DODI-TPB), is presented.
Nikola Sakač   +10 more
doaj   +1 more source

Home - About - Disclaimer - Privacy