High current coulometric KF titrator

Details High current coulometric KF titrator High current coulometric KF titrator

1993-01-14

1994-04-05

Niebling, John

Chemistry: electrical and wave energy

Apparatus

Electrolytic

20415323, 422 15, G01N 2726

Patent

active

053002075

ABSTRACT:
A high current coulometric titrator for the Karl Fischer determination of water in which a diaphragm is not required between the electrodes of the iodine-generating circuit. These electrodes are designed to ensure that substantially only iodine is generated at the anode while minimizing conversion of iodine to iodide at the cathode. In a preferred embodiment, the anode has a generally curved shape, all portions of which are substantially equidistant from the cathode. Increased current efficiency results wherein the amount of iodine generated at the anode increases as the magnitude of the iodine-generating current increases. Titration rates in excess of 2.5 milligrams of water per minute are achieved.

REFERENCES:
patent: 4230554 (1980-10-01), Blanke
patent: 5139955 (1992-08-01), Scholz

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