Abstract
Both a C 1 and a C 18 saturated hydrocarbon have been bonded to 75-μm capillaries for high-voltage capillary electrophoresis separations. The performance of these bonded phases has been compared with unbonded capillaries under a variety of experimental conditions. The bonded phases were prepared by a flow-through procedure at room temperature, and the reproducibilities of the electroosmotic flow for the C 1 and C 18 capillaries were 6 and 3%, respectively. Both of the bonded phases reduced interactions between the silica surface and positively charged ions, but for larger hydrophobic ions sorption and peak tailing were observed on the C 18 phase. In the presence of sodium dodecylsulfate and sodium decanesulfonate it was possible to control the electroosmotic flow over a wide range. The separation of lanthanide metal ions is illustrated, and improved resolution and reduced surface interactions are shown for the bonded phases.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
