Reductive electrochemical analysis method with continuous deoxygenation
US4568648A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 19, 1984 |
| Grant date | Feb 4, 1986 |
| Priority date | — |
| Expiry date | Dec 19, 2004 |
Classification
- Technology area (CPC —)General
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.