Evaluation of graphitized glass capillary columns
β Scribed by Goretti, G. ;Liberti, A. ;Pili, G.
- Publisher
- John Wiley and Sons
- Year
- 1978
- Tongue
- English
- Weight
- 329 KB
- Volume
- 1
- Category
- Article
- ISSN
- 0935-6304
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
The performance of graphitized glass capillary columns obtained by precoating the inner glass walls with graphitized carbon black has been evaluated. It has been shown that according to the amount of stationary phase coated such columns can operate in gasβliquidβsolid chromatography and in gasβliquid chromatography so that tailorβmade columns for specific separations can be prepared. The versatility of these columns is shown in the separation of various mixtures (terpenes, pesticides, isomeric species and others) of analytical importance.
π SIMILAR VOLUMES
It is well known that removal of metal ionsfrom the glass surface greatly improves both the thermal stability and the adsorption characteristics of glass capillary columns.Usually metal ions are removed from a glass surface by acid leaching; in particular, the static leaching procedure with hydrochl
## Abstract A detailed method for the routine preparation of glass capillary columns is presented. The method consists of coating a glass tube with quartz powder prior to pulling the tube into a capillary. The inner surface of the capillary consists of an even distribution of quartz particles fused