Potentiometric titrator
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I would like to ask, what is the principle of a potentiometric titrator? What is used to determine the titration endpoint? Has it been used to quantitatively analyze primary, secondary, and tertiary amines?
A potentiometric titrator measures ion concentration by detecting changes in electrode potential. First, select appropriate indicator electrodes and reference electrodes to form a working cell with the solution to be tested, and then add the titrant. During the titration process, chemical reactions occur, causing the concentration of the ion being measured to change continuously; as a result, the potential of the indicator electrode also changes. Around the titration endpoint, the concentration of the ion being measured undergoes a sudden change, resulting in a jump in the electrode potential; therefore, the titration endpoint can be determined based on this jump in electrode potential, and the measurement result can be obtained.