Flow-through electrochemical system analytical method

Details Flow-through electrochemical system analytical method Flow-through electrochemical system analytical method

1978-03-27

1979-10-30

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

204195P, 435817, 435291, G01N 2746

Patent

active

041727703

ABSTRACT:
An electrochemical system using a flow-through electrode design employing a dual separation method to lower electrode poisoning due to large chemical species and interference current due to small electroactive species is disclosed. The system includes a fluid inlet to a reaction chamber and a fluid outlet from the chamber, with the chamber in contact with an electrode system. The electrode is protected from poisoning and interference by a membrane system comprising a semipermeable membrane having well defined pore ranges therethrough which allow diffusion of only selected size small molecules. A unique sample stream flow control coupled with the size selective membrane combine to remove large, or macromolecule poisoning species and substantially reduce small species interference at the active surfaces of the electrode means.

REFERENCES:
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patent: 3380905 (1968-04-01), Clark
patent: 3622488 (1971-11-01), Chand et al.
patent: 3707455 (1972-12-01), Derr et al.
patent: 3795589 (1974-03-01), Dahms
patent: 4017374 (1977-04-01), Aas et al.
patent: 4036722 (1977-07-01), Brushwyler
patent: 4073713 (1978-02-01), Newman
patent: 4109505 (1978-08-01), Clark et al.

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