Indicator glass electrodes in Potentiometry analysis
Indicator glass electrodes are commonly used in potentiometric analysis to measure the potential difference between two solutions. These electrodes consist of a thin-walled glass tube filled with an electrolyte solution and a reference electrode immersed in the electrolyte.
The indicator electrode is usually made of a special glass that contains a particular ion or group of ions that are sensitive to changes in the concentration of a specific analyte in the solution being measured. As the concentration of the analyte changes, the potential difference between the indicator electrode and the reference electrode changes, producing a voltage signal that can be measured and used to calculate the concentration of the analyte.
The most common type of indicator electrode is the glass pH electrode, which is used to measure the acidity or alkalinity of a solution. Other types of indicator electrodes include fluoride ion-selective electrodes, chloride ion-selective electrodes, and potassium ion-selective electrodes, which are used to measure the concentrations of these ions in solution.
In summary, indicator glass electrodes play an important role in potentiometric analysis by allowing for the accurate measurement of the concentration of specific analytes in solution.
First Year B Pharm Notes, Syllabus, Books, PDF Subjectwise/Topicwise
Suggested readings: