Construction and Study of New Ion Selective Electrodes for the Determination Promethazine Hydrochloride and Indium (III)

number: 
2539
English
department: 
Degree: 
Author: 
Zainab Watheq Ahmed
Supervisor: 
Assistant professor Dr. Khaleda H. Al-Saidi
year: 
2010

       Ion selective electrodes (ISEs) are part of group of relatively simple and inexpensive analytical tools which are commonly referred to as sensors.  The pH electrode is the most well known and simplest member of this group and can be used to illustrate the basic principles of ion selective electrodes [1].  Also, ISE is a transducer sensor which converts the activity of  a specific ion dissolved  in solution into an electrical potential  which  can be measured by a voltmeter or pH meter. The sensing part of the electrode is usually made as an ion specific membrane, along with a reference electrode. It is impossible to measure the interfacial potential directly, but this can be achieved using a suitable electrochemical cell and the potential is measured at equilibrium under a zero current condition [2].