Page 49 - Pharmaceutical Analytical Chemistry II - Pharm D- 02-06-07102
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Potentiometry
- Analysis by Measuring Electrode Potentials
- It is an electro-analytical method in which electrode potential is
correlated to concentration of analyte
- The potential is measured without drawing a current from the
electrochemical cell (Galvanic)
Potentiometric measurements:
Potentiometric measurements are made using a potentiometer
Potentiometer
A device for measuring the potential of an electrochemical cell
without drawing a current or altering the cell’s composition.
It has three parts:
- Indicator electrode (selective for the analyte of interest) ---
works as cathode (right half-cell).
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