ChemInform Abstract: DETERMINATION OF MEAN ACTIVITY COEFFICIENTS OF CSCL IN AQUEOUS-METHANOL MIXTURES BY MEANS OF CELLS WITH LIQUID JUNCTION

1974 ◽  
Vol 5 (1) ◽  
Author(s):  
STEFAN MINC ◽  
JADWIGA JASTRZEBSKA
Keyword(s):  
Activity Coefficients ◽  
Aqueous Methanol ◽  
Liquid Junction ◽  
Mean Activity Coefficients

Determination of mean activity coefficients with ion-selective electrodes

1983 ◽  
Vol 55 (8) ◽  
pp. 1275-1280 ◽  
Author(s):  
Roger G. Bates ◽  
Andrew G. Dickson ◽  
Miklos. Gratzl ◽  
Andrea. Hrabeczy-Pall ◽  
Erno. Lindner ◽  
...  
Keyword(s):  
Activity Coefficients ◽  
Ion Selective Electrodes ◽  
Mean Activity Coefficients

scholarly journals Influence of Erythrocytes on Direct Potentiometric Determination of Sodium and Potassium

1983 ◽  
Vol 20 (2) ◽  
pp. 116-120 ◽  
Author(s):  
P Bijster ◽  
H L Vader ◽  
C L J Vink
Keyword(s):  
Whole Blood ◽  
Potassium Concentration ◽  
Reference Electrode ◽  
Sodium Concentration ◽  
General Phenomenon ◽  
Liquid Junction ◽  
Direct Potentiometry ◽  
The Difference ◽  
Sodium And Potassium

We have shown that the sodium concentration in whole blood measured by direct potentiometry is higher than in plasma. The ‘erythrocyte-effect’, already described by Siggaard Andersen, is most pronounced for instruments equipped with a reference electrode with an open static liquid junction and is thus a general phenomenon. Instruments with a modified liquid junction show less interference. The same phenomenon appears for the determination of the potassium concentration, although the difference between whole blood and plasma, when measured with instruments equipped with a modified liquid junction, can be neglected in practice.

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