Determination of ionic mobilities and dissociation constants of monovalent acids and bases by micropreparative capillary isotachophoresis with off-line measurement of the pH of zones

1987 ◽  
Vol 390 (1) ◽  
pp. 17-26 ◽  
Author(s):  
Jan Pospíchal ◽  
Mirko Deml ◽  
Petr Boček
Keyword(s):  
Dissociation Constants ◽  
Capillary Isotachophoresis ◽  
Line Measurement ◽  
Ionic Mobilities ◽  
Acids And Bases

Determination of limiting ionic mobilities and dissociation constants of some local anaesthtics

1992 ◽  
Vol 596 (2) ◽  
pp. 265-270 ◽  
Author(s):  
Miroslav Polášek ◽  
Bohuslav Gaš ◽  
Takeshi Hirokawa ◽  
Jiří Vacík
Keyword(s):  
Dissociation Constants ◽  
Ionic Mobilities

Determination of relative ionic mobilities by capillary isotachophoresis

1985 ◽  
Vol 320 (1) ◽  
pp. 139-146 ◽  
Author(s):  
Jan Pospíchal ◽  
Mirko Deml ◽  
Zdeňka Žemlová ◽  
Petr Boček
Keyword(s):  
Capillary Isotachophoresis ◽  
Ionic Mobilities

Determination of acidic dissociation constants of L-phenylalanyl-glycine and L-alanyl-L-alanine in water using ab initio methods

2014 ◽  
Vol 2 (42) ◽  
pp. 263-263
Author(s):  
Farhoush Kiani ◽  
Mahmoud Tajbakhsh ◽  
Fereydoon Ashrafi ◽  
Nesa Shafiei ◽  
Azar Bahadori ◽  
...  
Keyword(s):  
Ab Initio ◽  
Dissociation Constants ◽  
Ab Initio Methods ◽  
Acidic Dissociation

Acids, bases and buffer solutions

2018 ◽  
Author(s):  
Dennis Sherwood ◽  
Paul Dalby
Keyword(s):  
First Principles ◽  
Buffer Capacity ◽  
Unique Feature ◽  
Dissociation Constants ◽  
Equilibrium Composition ◽  
Buffer Solutions ◽  
Acid And Base ◽  
Water Ph ◽  
Acids And Bases ◽  
Conjugate Bases

Many reactions in solution involve acids and bases, and so this chapter examines these important reactions in detail. Topics covered include the ionisation of water, pH, pOH, acids and bases, conjugate acids and conjugate bases, acid and base dissociation constants, the Henderson-Hasselbalch equation, the Henderson-Hasselbalch approximation, buffer solutions and buffer capacity. A unique feature of this chapter is a ‘first principles’ analysis of how a reaction buffered at a particular pH achieves an equilibrium composition different from that of the same reaction taking place in an unbuffered solution. This introduces some concepts which are important in understanding the biochemical standard state, as required for Chapter 23.

scholarly journals Interfacial Tension Sensor for Low Dosage Surfactant Detection

2021 ◽  
Vol 5 (1) ◽  
pp. 9
Author(s):  
Piotr Pawliszak ◽  
Bronwyn H. Bradshaw-Hajek ◽  
Christopher Greet ◽  
William Skinner ◽  
David A. Beattie ◽  
...  
Keyword(s):  
Interfacial Tension ◽  
Microfluidic Device ◽  
Profile Analysis ◽  
Simple Method ◽  
Bubble Generation ◽  
Flotation Process ◽  
Line Measurement ◽  
Tension Sensor ◽  
Low Dosage

Currently there are no available methods for in-line measurement of gas-liquid interfacial tension during the flotation process. Microfluidic devices have the potential to be deployed in such settings to allow for a rapid in-line determination of the interfacial tension, and hence provide information on frother concentration. This paper presents the development of a simple method for interfacial tension determination based on a microfluidic device with a flow-focusing geometry. The bubble generation frequency in such a microfluidic device is correlated with the concentration of two flotation frothers (characterized by very different adsorption kinetic behavior). The results are compared with the equilibrium interfacial tension values determined using classical profile analysis tensiometry.

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