Polar, highly polar, and extremely polar GC columns are made with very selective GC stationary phases. These include polyethylene glycol, ionic liquids, and polysiloxane polymers with cyanopropyl functional groups. They are commonly used to analyze polarizable compounds (such as alkenes, alkynes, and aromatic hydrocarbons) that contain some double and/or triple bonds between carbon atoms. Dispersive (van der Waals forces), p- p, dipole-dipole, and dipole-induced dipole interactions are all strong with these columns. Moderate amounts of hydrogen bonding and basic interactions are also possible. Elution order is determined by differences in the overall effects of possible interactions. Choices are:
SUPELCOWAX 10, polyethylene glycol phase, similar to the original polar phase used for GCxGC applications. Maximum temperature of 280 °C (isothermal or programmed).
SLB-IL60, most inert polar ionic liquid phase with a high temperature limit. Maximum temperature of 300 °C (isothermal or programmed)
SLB-IL59, polar ionic liquid phase with a high temperature limit. Maximum temperature of 300 °C (isothermal or programmed).
SLB-IL111, extremely polar ionic liquid phase, most orthogonal phase to non-polar phases. Maximum temperature of 270 °C (isothermal or programmed).
SP-2380, highly polar cyanopropyl siloxane phase commonly used for FAME separations. Maximum temperature is 275 °C (isothermal or programmed).
SLB-IL61, alternate polar ionic liquid phase with improved inertness compared to the SLB-IL59. Maximum temperature of 290 °C (isothermal or programmed).
SLB-IL76, alternative highly polar ionic liquid phase. Maximum temperature of 270 °C (isothermal or programmed).
SLB-IL82, alternative highly polar ionic liquid phase. Maximum temperature of 270 °C (isothermal or programmed).
SP-2331, alternative highly polar cyanopropyl siloxane phase. Maximum temperature is 275 °C (isothermal or programmed).
