## Abstract The polarity of carbon layer open tubular (CLOT) columns coated with a layer of nonโporous graphitized carbon black (Carbopack B) modified with an appropriate amount of polar polyglycol liquid phase has been evaluated and compared with that of standard polar (Supelcowaxโ10) and nonโpola
Carbon layer open tubular capillary columns
โ Scribed by Sidisky, Leonard M. ;Robillard, Mark V.
- Publisher
- John Wiley and Sons
- Year
- 1993
- Tongue
- English
- Weight
- 335 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0935-6304
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โฆ Synopsis
Abstract
Capillary columns coated with Carbopack materials, which provide separation by a mixed partition/adsorption mechanism or by adsorption alone, have recently been developed. The reproducibility of the columns is demonstrated and applications shown in which they provide separations which are either unique or are faster than can be achieved with the wall coated open tubular capillary columns currently available.
๐ SIMILAR VOLUMES
## Abstract We report a simple method for the preparation of silica PLOT columns using fused silica capillaries. In this method, silica particles were suspended in a methylene chloride/pentane solution containing polymethylhydrosiloxane and passed through the capillary tubing. This caused the silic
## Abstract Fused silica columns of 4.6 ฮผm i.d. were coated with 3โsulfopropylsilane as a cation exchanger and 3โ(2โaminoethylโamino)โpropylsilane as an anion exchanger. Fast separations of cations (< 25 seconds) and of anions (< 35 seconds) were obtained, using a potentiometric microelectrode as a
## Capillary electrochromatography of amino acids with a protein-bonded porous-layer open-tubular column A protein-bonded porous-layer open-tubular (PLOT) column has been synthesized and applied to the separation of amino acids by CEC. The porous layer was coated on the capillary inner wall by in s
A new type of open-tubular C(18) ester-bonded electrochromatographic column was prepared with sol-gel technology, followed by an on-column octadecyl silylation reaction. Glycidoxypropyltrimethoxysilane, a widely used and important silane agent, was used as the sol-gel precursor to form a thin coatin