Analytical Instrumentation
Using Micropacked GC Columns for Analyzing Volatiles in Light Hydrocarbon Streams
Aug 28 2012
Author: Jaap de Zeeuw and Gary Stidsen on behalf of Restek Corp
Separation of light hydrocarbons and volatile compounds can be done very effectively with adsorption chromatography. Using highly retentive adsorbents in packed columns, unique separations can be obtained at higher temperatures. Additionally, adsorbents are difficult to destroy, resulting in long column lifetimes. Most analysts still employ traditional packed columns for light hydrocarbon analysis, but many adsorbents are also available in micropacked and porous layer open tubular (PLOT) column formats. Recent advances in PLOT column technology indicate that they are a better option when greater efficiency is required, while packed columns still are preferred when higher sample loadability is needed. While both traditional packed and PLOT columns can be used effectively, micropacked columns offer intermediate performance and are a good alternative when both efficiency and sample loadability are desired.
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