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Preparation of wall-coated open tubular columns after surface roughening by means of amorphous silica

✍ Scribed by Badings, H. T. ;Van der Pol, J. J. G. ;Wassink, J. G.

Publisher: John Wiley and Sons
Year: 1979
Tongue: English
Weight: 843 KB
Volume: 2
Category: Article
ISSN: 0935-6304
DOI: 10.1002/jhrc.1240020609

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✦ Synopsis

Abstract

A new method for the preparation of wall‐coated glass capillary columns after surface roughening by means of amorphous silica is described. After the glass capillary has been leached, a small quantity of amorphous silica is deposited evenly on the inner surface. This is done by passing a plug of dilute water glass through the capillary, followed by a flow of gaseous hydrochloric acid. The roughened surface is stabilized, deactivated and finally coated.

This paper furnishes details of the technique and information about the performance of a number of columns prepared by the method.

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Comparison of dynamically coated SE-54, SP-2250 and carbowax 20M wall-coated open tubular (WCOT) glass capillary columns, prepared after surface pretreatment with Superox™-4 or with BaCO3

✍ Arrendale, R. F. ;Smith, L. B. ;Rogers, L. B. 📂 Article 📅 1980 🏛 John Wiley and Sons 🌐 English ⚖ 619 KB

## Abstract A new surface pretreatment for the preparation of wall‐coated open tubular (WCOT) glass capillary columns has been evaluated. This technique involves the application of a non‐extractable layer of Superox™‐4, a 4,000,000 MW polyethylene glycol, to the glass surface as a pretreatment and