Ionic liquid stationary phase coating optimization for semi-packed microfabricated columns.

ABSTRACT: This work highlights the effect of the stationary phase coating process on the separation efficiency of gas chromatography microcolumns. The stationary phase coating quality was characterized by three different bis(trifluoromethylsulfonyl)imide (NTf₂) anion based ionic liquids. The ionic liquids containing NTf₂ anion are used for gas chromatography due to their high temperature stability. In this work, the chemical and physical approaches of column deactivation as well as the temperature treatment were evaluated by separating a mixture of 20 organic components and saturated alkanes. The results show that higher oven temperature treatment provides higher efficiency while losing a bit of peak symmetry. The thermal treated 1-butylpyridinum bis(trifluoromethylsulfonyl) im

SUBMITTER: Gholizadeh A 

PROVIDER: S-EPMC9006911 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature