Reductive electrochemical analysis method with continuous deoxyg

Details Reductive electrochemical analysis method with continuous deoxyg Reductive electrochemical analysis method with continuous deoxyg

1984-12-19

1986-02-04

Richman, Barry S.

Chemistry: analytical and immunological testing

Including chromatography

422 70, 436178, 55158, G01N 100, B01D 1300

Patent

active

045686483

ABSTRACT:
An improved method for the continuous removal of dissolved oxygen from a flowing liquid containing sample bands, the invention being effective to remove the interference of the dissolved oxygen for purposes of reductive electrochemical detection of analyte of interest. As an example of utility, using a silicone rubber membrane in a shell and tube design, typically >99 percent of the dissolved oxygen can be removed by permeation from aqueous solutions within a residence time of six seconds. Applications of the technique to the post-column removal of dissolved oxygen from ion exchange and reverse phase chromatographic mobile phases prior to reductive electrochemical detection are particularly described and claimed.

REFERENCES:
patent: 3463615 (1969-08-01), Sochor
patent: 3751879 (1973-08-01), Allington
patent: 4265634 (1981-05-01), Pohl
patent: 4268279 (1981-05-01), Shindo et al.
patent: 4388411 (1983-06-01), Lovelock
Kissinger et al.; Reductive Mode Thin-Layer Amperometric Detector for L C: J. of L C 4(10), 1777-1795, (1981).
Manufactures Bulletin, ERC 3000 On--Line Degasser.
Stevens et al.; Hollow Fiber Ion-Exchange Suppressor for Ion Chromatography; Anal. Chem. 1981, 53, pp. 1488-1492.

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