What Impact Does Water Vapor Have on Adsorbent Columns?
Gas samples often contain some water vapor, but how much can be injected onto an adsorbent column before it affects chromatographic results? In this study, we explored how much is too much for molecular sieve, porous polymer, and ShinCarbon columns.
A Selectivity Map for Noble and Permanent Gases on Adsorbent Columns
Predicting adsorbent column selectivity is often a wild guess. Argon will have less retention than krypton, but how well will noble and permanent gases be separated? To give definite answers, we mapped out column selectivity for noble gases relative to permanent gases.
Method Translation for PLOT Columns: Switching Carrier Gases Using EZGC Software
The EZGC method translator is an essential tool for modifying methods on gas-liquid GC columns, but will it also work for adsorption-based PLOT columns? We used it to change carrier gases for the analysis of hydrocarbon contaminants in propylene on an alumina column and here’s what we found…