Effect of organic solvents and their dielectric constants on ion selective electrode potential

1979 ◽  
Vol 72 (5-6) ◽  
pp. 411-420 ◽  
Author(s):  
Sunetra N. Kar Chaudhari ◽  
K. L. Cheng
Keyword(s):  
Organic Solvents ◽  
Electrode Potential ◽  
Dielectric Constants ◽  
Ion Selective Electrode ◽  
Selective Electrode

Applied Technology in Diaper-Based UTI Testing for Elder People by Using Nitrite Ion Selective Electrode

2014 ◽  
Vol 662 ◽  
pp. 225-228 ◽  
Author(s):  
Shi Lun Feng ◽  
Tao Dong
Keyword(s):  
Electrode Potential ◽  
Urine Samples ◽  
Ion Selective Electrode ◽  
Selective Electrode ◽  
Nitrite Ion ◽  
Applied Technology ◽  
Tract Infections ◽  
Common Infection ◽  
Fresh Urine ◽  
Elder People

Urinary tract infections (UTI) are common infection diseases in the hospitals, especially for the elder people. Detecting UTI for the elder people is difficult and time-consuming procedure. Since measuring nitrite directly in urine is often employed in the diagnosis of UTI, a nitrite ion selective electrode (ISE) was investigated in this study in order to detect UTI samples directly on used diapers of patients. With a commercial ISE sensor for nitrite, the detecting system was built to quickly and precisely quantify different concentrations of nitrite ions in both water solutions and real human urine samples. Good results were shown in the experiment that the nitrite can be precisely detected in the fresh urine by the ISE with the relations as Ε=224.7-21.259×Lg (C+13.476), where E is the electrode potential and C is the concentration of nitrite ions. Besides, the method of extracting urine samples from used diapers was also studied for further research. The investigation suggested that a sampling module for used diapers could be simply realized if necessary.

Influence of extraction properties of PVC plasticizer membrane on the response of coated wire type ion selective electrode

1988 ◽  
Vol 53 (5) ◽  
pp. 912-920 ◽  
Author(s):  
Emil Halámek ◽  
Tomáš Čapoun ◽  
Jan Souček
Keyword(s):  
Distribution Coefficient ◽  
Electrode Potential ◽  
Ion Pair ◽  
Ion Selective Electrode ◽  
Ion Concentration ◽  
Pvc Membrane ◽  
Potential Range ◽  
Selective Electrode ◽  
Coated Wire ◽  
Extraction Properties

The authors studied the influence of the extraction properties of a PVC membrane plasticizer of a coated-wire type ion-selective electrode on its response in titrations of brucine and atropine with sodium tetraphenyl borate, as well as in potentiometric determinations of these compounds. The highest attainable value of the ion pair concentration in the plasticizer, which is limited by the distribution coefficient of the ion pair, determines the interval in which the electrode potential can be changed; and a linear dependence of the potential range of the titration curves on the logarithm of the ion-pair distribution coefficient was found. The slope of the dependence of the electrode potential on the logarithm of the ion concentration to be determined, found in potentiometric measurements, is proportional to the distribution coefficient of the ion which forms a pair with the ion to be determined and in whose solution the electrode membrane is activated between the measurements. The dependence of the slope of the electrode function on the logarithm of the product of the mentioned distribution coefficients is linear.

Fluorimetric readout of ion-selective electrode potential changes

2018 ◽  
Vol 284 ◽  
pp. 321-327 ◽  
Author(s):  
Ewa Jaworska ◽  
Agata Michalska ◽  
Krzysztof Maksymiuk
Keyword(s):  
Electrode Potential ◽  
Ion Selective Electrode ◽  
Selective Electrode
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