Chemistry: electrical and wave energy – Processes and products
Patent
1986-07-28
1989-05-16
Niebling, John F.
Chemistry: electrical and wave energy
Processes and products
204402, 204415, G01N 2726
Patent
active
048307130
ABSTRACT:
A method of regenerating a membrane-enclosed amperometric or Clark cell having an operative current range for electroanalytical operation limited by a maximum current density of typically not more than 100 .mu.A/cm.sup.2 at the working electrode by subjecting at least one of the probe electrode in contact with a regeneration electrolyte, while the membrane is removed, to a regeneration current for causing a current density in the range of from about 1 to about 1000 mA/cm.sup.2 which is substantially higher, e.g. by a factor of at least 10 and preferably at least 100, than the maximum current density in electroanalytical operation.
The device for use in this method comprises an enclosure having a lower end and an upper end; the lower end is sealingly closed by the sensing end of the probe; the device comprises a regenerator electrode external to the probe arranged within the enclosure to provide a space for holding a regeneration electrolyte in contact with the regenerator electrode and the probe electrodes; a lead connects the regenerator electrode with a current source having a second outlet connected with at least one of the probe electrodes.
REFERENCES:
patent: 3503861 (1970-03-01), Volpe
patent: 4541901 (1985-09-01), Parker
patent: 4566949 (1986-01-01), Berger
Hsing Ben C.
Kleeman Werner W.
Niebling John F.
Orbisphere Laboratories (Inc.)
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