Thermodynamics of ion association in aqueous solutions of calcium- and magnesium-substituted hydroxybenzoates using an ion-selective electrode technique

1984 ◽  
Vol 88 (15) ◽  
pp. 3345-3348 ◽  
Author(s):  
Mostafa M. Emara ◽  
Nazik A. Farid ◽  
Ahmed M. Wasfi ◽  
Mohie M. Bahr ◽  
Hassan M. Abd-Elbary
Keyword(s):  
Aqueous Solutions ◽  
Ion Association ◽  
Ion Selective Electrode ◽  
Selective Electrode ◽  
Calcium And Magnesium ◽  
Electrode Technique

Association of benflurone in aqueous solutions studied by measuring the activity of chloride ions

1986 ◽  
Vol 51 (11) ◽  
pp. 2437-2443
Author(s):  
František Kopecký ◽  
Mária Vojteková ◽  
Milan Pešák
Keyword(s):  
Aqueous Solutions ◽  
Chloride Ions ◽  
Ion Selective Electrode ◽  
Selective Electrode ◽  
Measured Range

The conventional activity of chloride ions was measured by an ion-selective electrode at 25 °C in aqueous solutions of benflurone, i.e. 5-(2-(N,N-dimethylamino)ethoxy)-7-oxo-7H-benzo(c)fluorene hydrochloride, without or with additions of KCl. These results suggest a gradual association of benflurone; the formation of a hetero-associate, (BH+)2Cl-, followed by higher associates was evaluated in the measured range up to 0.1 mol l-1.

Ion-Selective Electrodes Sensitive to Organic Ions. I. The Saccharin Electrode

1974 ◽  
Vol 57 (5) ◽  
pp. 1205-1208
Author(s):  
Norio Hazemoto ◽  
Naoki Kamo ◽  
Yonosuke Kobatake
Keyword(s):  
Ion Association ◽  
Ion Selective Electrode ◽  
Ion Concentration ◽  
Ion Selective Electrodes ◽  
Selective Electrode ◽  
Organic Ions ◽  
Sodium Cyclamate

Abstract An ion-selective electrode responsive to saccharin was made by dissolving an ion association which exists between iron(II)-bathophenanthroline chelate and saccharin in nitrobenzene. The electrode developed was capable of measuring saccharin ion concentration in the presence of other sweetening substances, e.g., saccharose, glucose, sodium cyclamate, and sorbitol, over the concentration range of 10-1 to 10-5M.

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