## Relatively long lengths of porous-layer open-tubular (PLOT) columns operated at high carrier gas velocities were used to separate light hydrocarbons and permanent gases in less than 60 s. Two types of stationary phases were used in this study: silica particles and a commercially available carbo
Charcoal porous layer open tubular column gas chromatography for permanent gas analysis
β Scribed by Hao Yun; Milton L. Lee; Karin E. Markides
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 422 KB
- Volume
- 7
- Category
- Article
- ISSN
- 1040-7685
No coin nor oath required. For personal study only.
β¦ Synopsis
The preparation of charcoal porous layer open tabular (PLOT) columns, and their application to the separation of permanent gases and light hydrocarbons are reported. Two types of charcoal, coconut and darco charcoal, were used to prepare columns from fused silica capillaries. The performance of these columns was compared to that of a commercially available carbon molecular sieve PLOT column. The coconut charcoal PLOT column produced good retention and resolution for both permanent gases and light hydrocarbons; all separations were achieved in less than eight minutes under isothermal conditions. o 1995 John WiIey & Sons, Inc.
π SIMILAR VOLUMES
## Abstract Two new crown ether substituted polysiloxanes, 4βpropylbenzoβ15βcrownβ5polysiloxane(PSOβBβ15C5) and propyloxydibenzoβ14βcrownβ4polysiloxane (PSOβDBβ14C4), were prepared and used as stationary phases coated on fusedβsilica open tubular columns. The chromatographic characteristics, includ
An injection valve with a small internal loop actuated by pneumatic switching was used for high-speed gas chromatography (GC). Small internal diameter (50 and 100 p m i.d.1 open tubular columns were used for investigations of the injector performance. Several valve injection systems have been tested