Liquid Ion Exchanger Membrane Electrode Sensitive to Perrhenate and Thiocyanate; U-Shaped Potentiometric Titration Curves

1969 ◽  
Vol 2 (5) ◽  
pp. 295-303 ◽  
Author(s):  
Roland F. Hirsch ◽  
John D. Portock
Keyword(s):  
Potentiometric Titration ◽  
Ion Exchanger ◽  
Membrane Electrode ◽  
Titration Curves ◽  
Liquid Ion Exchanger

Reaction of metallic nitrilotriacetates with histamine

1969 ◽  
Vol 47 (8) ◽  
pp. 1269-1273 ◽  
Author(s):  
A. L. Beauchamp ◽  
J. Israeli ◽  
H. Saulnier
Keyword(s):  
Potentiometric Titration ◽  
Formation Constants ◽  
Amino Group ◽  
Mixed Complex ◽  
Ph Values ◽  
Titration Curves ◽  
Terminal Amino ◽  
Complex Ion

Cu(II), Ni(II), Co(II), and Zn(II) nitrilotriacetates (MeX−) react with histamine nitrate (LH+) to form a protonated mixed complex MeXLH where the metal appears to be bound only to the tertiary imidazolic nitrogen of histaminium ion. At higher pH values the proton dissociates to yield a mixed complex ion MeXL− in which both the imidazolic nitrogen and the terminal amino group are coordinated. The formation constants of these species were calculated from the potentiometric titration curves.

scholarly journals Assessment of Two Theoretical Methods to Estimate Potentiometric Titration Curves of Peptides:  Comparison with Experiment

2006 ◽  
Vol 110 (9) ◽  
pp. 4451-4458 ◽  
Author(s):  
Joanna Makowska ◽  
Katarzyna Bagiñska ◽  
Mariusz Makowski ◽  
Anna Jagielska ◽  
Adam Liwo ◽  
...  
Keyword(s):  
Potentiometric Titration ◽  
Theoretical Methods ◽  
Titration Curves ◽  
Comparison With Experiment

Determination of zirconyl ions with an ion-exchanger membrane electrode

1983 ◽  
Vol 315 (4) ◽  
pp. 353-353 ◽  
Author(s):  
S. K. Srivasta ◽  
Surendra Kumar ◽  
Naresh Pal ◽  
Rashmi Agrawal
Keyword(s):  
Ion Exchanger ◽  
Membrane Electrode

Characteristics of basolateral Cl- transport by gastric surface epithelium in Necturus antral mucosa

1993 ◽  
Vol 264 (5) ◽  
pp. G910-G920 ◽  
Author(s):  
D. I. Soybel ◽  
M. B. Davis ◽  
L. Y. Cheung
Keyword(s):  
Nutrient Solution ◽  
Cell Membranes ◽  
Basolateral Membrane ◽  
Membrane Potentials ◽  
Gastric Antrum ◽  
Ion Exchanger ◽  
Surface Epithelium ◽  
Antral Mucosa ◽  
Liquid Ion Exchanger ◽  
Electrochemical Equilibrium

Conventional and ion-selective microelectrodes were used to characterize transport of Cl- across the basolateral cell membranes of gastric surface epithelium in isolated preparations of gastric antrum of Necturus. Conventional, voltage-sensing electrodes were used to evaluate changes in membrane potentials and resistances during removal of Cl- from the nutrient perfusate. Liquid ion exchanger Cl(-)-selective microelectrodes were constructed and validated to measure intracellular Cl- activity (aiCl). Our data indicate that 1) aiCl (range 12-25 mM) is close to that predicted if Cl- is distributed across the cell membranes by electrochemical equilibrium, 2) aiCl is not influenced by changes in luminal Cl- content but is susceptible to changes in nutrient Cl- content, 3) Cl- conductances cannot be detected in the basolateral membrane and changes in membrane potentials do not influence aiCl, and 4) Cl- accumulation across the basolateral membrane depends on Na+ and the level of [K+] in the nutrient solution. Inhibition of K(+)-dependent Cl- accumulation, in the absence of nutrient Na+ or in the presence of the inhibitor bumetanide, was demonstrated. These findings suggest that basolateral Na(+)-K(+)-Cl- cotransport is important in regulating cell Cl- levels in surface cells of the gastric antrum in Necturus.

Work-induced potassium changes in skeletal muscle and effluent venous blood assessed by liquid ion-exchanger microelectrodes

1976 ◽  
Vol 362 (1) ◽  
pp. 85-94 ◽  
Author(s):  
P. Hník ◽  
M. Holas ◽  
I. Krekule ◽  
N. Kříž ◽  
J. Mejsnar ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Venous Blood ◽  
Ion Exchanger ◽  
Liquid Ion Exchanger

Potentiometric titration curves for lubricants

1977 ◽  
Vol 13 (3) ◽  
pp. 213-216 ◽  
Author(s):  
V. S. Luneva ◽  
T. V. Pavlova
Keyword(s):  
Potentiometric Titration ◽  
Titration Curves
Sign in / Sign up

Export Citation Format

Share Document