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Monitoring the mobile phase composition in supercritical fluid chromatography

✍ Scribed by Dongjin Pyo; Hoon Hwang

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
512 KB
Volume
280
Category
Article
ISSN
0003-2670

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✦ Synopsis

Adding additional components to supercritical CO, in supercritical fluid chromatography can extend or significantly alter the fluid solvating properties. Polar samples that are diffkult to analyse using pure supercritical CO, because of their high polarity can be separated by adding polar modifiers to the supercritical CO,. A method for monitoring the mobile phase composition in modified supercritical fluid chromatography is introduced. The amount of water or methanol dissolved in supercritical CO, was measured using an amperometric microsensor made of a thin film of perfluorosulphonate ionomer.

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