Erfahrung mit der ionenselektiven Bleielektrode Cryptur 82-17

Abstract

The properties of a led ion-selective electrode Cryptur 82-17 after guaranteed lifetime were investigated and its suitability for kinetic and continuous measurements is discussed. The response of the electrode strongly depends on the ionic strength, composition and stirring intensity of the solution. Effect of pH in the pH range of 2–6 has not been observed. It is necessary from time to time to polish the surface of the electrode membrane because of the passivation. It is very important to know the electrode response time and the drift of its potential. The electrode can be recommended as an indication electrode for precipitation and complexometric titrations, whereas an application to direct, especially continuous potentiometric measurements is not advisable.