English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
  Local TagsRelease HistoryDetailsSummary

Released
Journal Article

Immobilization of stationary liquids in reversed- and normal-phase liquid chromatography : Production and testing of materials for bonded-phase chromatography

MPS-Authors
/persons/resource/persons261144

Schomburg,  G.
Service Department Schomburg (GC), Max-Planck-Institut für Kohlenforschung, Max Planck Society;

/persons/resource/persons58504

Deege,  A.
Service Department Schomburg (GC), Max-Planck-Institut für Kohlenforschung, Max Planck Society;

Köhler,  J.
Service Department Schomburg (GC), Max-Planck-Institut für Kohlenforschung, Max Planck Society;

Bien-Vogelsang,  U.
Service Department Schomburg (GC), Max-Planck-Institut für Kohlenforschung, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Schomburg, G., Deege, A., Köhler, J., & Bien-Vogelsang, U. (1983). Immobilization of stationary liquids in reversed- and normal-phase liquid chromatography: Production and testing of materials for bonded-phase chromatography. Journal of Chromatography A, 282, 27-39. doi:10.1016/S0021-9673(00)91589-9.


Cite as: https://hdl.handle.net/21.11116/0000-0008-9B85-3
Abstract
New types of silanization reagents for small-particle silica packing materials and a solventless vacuum technique for carrying out the reaction were tested with the aim of conveniently achieving a more complete reaction of the silanol groups. Materials for bonded-phase chromatography with better quality and reproducibility were obtained.

In a second series of experiments we attempted to fix monomeric and oligomeric siloxanes and also certain unsaturated hydrocarbons on either unsilanized or presilanized materials by cross-linking reactions with γ-radiation or peroxides. With the presilanized materials of the Si-O-Si(CH3)3 type we obtained better surface deactivation and fixation of the siloxane oligomers on the surface alkylsilyl groups by the cross-linking reaction.

All silicas should be examined for particle size and structure before and after chemical treatment and analysed for carbon content in bulk and in the surface layer, for permeability and for tailing behaviour after packing of a column. Surface area determinations are also advisable. Chromatographic measurements for efficiency and polarity (selectivity) gave information about the practical value of these materials.