Hydroxy-dibenzo crown ether stationary phase for capillary gas chromatography using sol-gel technology

Se Pu. 2000 Jul;18(4):304-7.

Abstract

A new kind of crown ether, OH-dibenzo-14-crown-4 (OH-DB14C4), is prepared and coated onto the fused silica capillary by sol-gel process. Chromatographic characteristics including column efficiency (> 3,000 plates/m), thermal stability (to 330 degrees C) and ability of deactivation are studied. The selectivity of new stationary phase is superior to sol-gel OH-terminal silicone oil (OH-TSO) for positional isomers of some aromatic compounds such as xylene, dichlorobenzene, nitrotoluene, nitrochlorobenzene. The new stationary phase has high sample capacity for separation of small molecular mass compounds: low-molecular-mass alcohols, ethers and ketones, short-chain fatty acids and volatile amines.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Chromatography, Gas / instrumentation*
  • Chromatography, Gas / methods
  • Ethers, Cyclic
  • Gels
  • Stereoisomerism
  • Xylenes / chemistry
  • Xylenes / isolation & purification*

Substances

  • Ethers, Cyclic
  • Gels
  • OH-dibenzo-14-crown-4
  • Xylenes