New analytical method using polar modifiers in supercritical fluid chromatography and its application to the separation of fatty alcohol ethers

초록

Fatty alcohol ethers, nonionic surfactants which are used as general purpose emulsifiers were separated by use of water-modified carbon dioxide mobile phase in capillary supercritical fluid chromatography. Much greater peak intensities and improved separation were observed in the chromatogram with on-line modified mobile phase than with pure CO<inf>2</inf>. A simple method for the preparation of on-line modified mobile phase is also introduced.