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Polar Capillary GC Columns

Polar GC columns are made using polar stationary phases, the most common being polyethylene glycol and modified versions. These columns are commonly used to separate polar analytes (such as alcohols, amines, carboxylic acids, diols, esters, ethers, ketones, and thiols) that contain 1) primarily carbon and hydrogen atoms, and 2) also some bromine, chlorine, fluorine, nitrogen, oxygen, phosphorus, and/or sulfur atoms. Elution order is determined by differences in the overall effects of possible interactions.
  • Dispersive (van der Waals forces), π-π, dipole-dipole, and dipole-induced dipole interactions are all strong with these columns.
  • Moderate amounts of hydrogen bonding and basic interactions are also possible.
  • SPB-1000 and Nukol columns are specially-engineered to also allow strong acidic interactions.
  • Carbowax amine columns are specially-engineered to also allow strong basic interactions.