Type of Document Master's Thesis Author Shagena, Elizabeth C. URN etd-11202012-040115 Title Comparison of packed and wide-bore, open-tubular gas chromatographic columns Degree Master of Science Department Chemistry Advisory Committee
Advisor Name Title McNair, Harold M. Committee Chair Bell, Harold M. Committee Member Hinshaw, J. V. Jr. Committee Member Long, Gary L. Committee Member Keywords
Date of Defense 1987-05-15 Availability restricted Abstract
Wide—bore, fused—si1ica capillary columns can be an excellent replacement for packed columns in many cases. They can provide higher surface inertness and thermal stability, as well as higher efficiency or speed of analysis. Wide—bore, open-tubular (WBOT) columns with thick films have higher sample capacities than conventional narrow—bore capillary columns and can be used in unmodified packed-column gas chromatographs.
The majority of gas chromatographic analyses are still performed using packed columns. Many chromatographers associate open-tubular columns exclusively with split injection, often perceived as less repeatable or quantitative. Also, many packed-column methods use application-specific stationary phases which are not readily available on capillary columns. WBOT columns with standard phases can often be substituted due to higher available efficiencies. While several studies have been published on qualitative differences, there is little comparative quantitative data available on O.53—mm I.D. and packed columns.
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