Symmetrical (double-speed) static coating for high-resolution gas chromatography column preparation

Research output: Contribution to journalArticle

Abstract

"Breakthrough" during static coating could be avoided using a new coating strategy: while filling the capillary support with coating solution, a short mercury plug was placed at the middle of the support length. Mercury was frozen by a cold source and vacuum was applied to both open ends. In this way static coating became symmetric and so evaporation rate was doubled, on a time base, and more than doubled on a coated length base. Coating time at room temperature varied from ∼20 min for 3-m columns to ∼3 h for 15-m columns. © 2002 Elsevier Science B.V. All rights reserved.
Original languageEnglish
Pages (from-to)79 - 83
Number of pages5
JournalJournal of Chromatography A
Volume985
Issue number1-2
DOIs
Publication statusPublished - 24 Jan 2003
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Analytical Chemistry

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