Hydrogen ion interferent reduction system for ion selective elec

Details Hydrogen ion interferent reduction system for ion selective elec Hydrogen ion interferent reduction system for ion selective elec

1981-11-13

1983-10-25

Kaplan, G. L.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

G01N 2728

Patent

active

044117647

ABSTRACT:
An ion activity or concentration analyzer including an ion selective electrode, a reference electrode and a flow-through electrolytic cell. A sample liquid enclosure conducts a flow of an aqueous sample past the anode and cathode electrodes of an electrolytic cell that is polarized to generate hydrogen and hydroxyl ions. The ion selective and reference electrodes are so positioned, with respect to the cathode electrode, that the hydroxyl ion concentration is increased in the vicinity thereof. This increased hydroxyl ion concentration causes a reduction in the hydrogen ion concentration and thereby substantially eliminates the interfering effect of hydrogen ions on the operation of the ion selective and reference electrodes.

REFERENCES:
patent: 3718556 (1973-02-01), Rohrback
patent: 3839162 (1974-10-01), Ammer
patent: 3941665 (1976-03-01), Eckfeldt et al.
patent: 4011297 (1977-03-01), Nyman et al.
patent: 4052285 (1977-10-01), Dobson
patent: 4058437 (1977-11-01), Young
patent: 4131428 (1978-12-01), Diggens

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