title: Programmed-temperature gas chromatography on mixed phases. Separation of steroid derivatives on binary mixtures.
abstract: The use of various programmed-temperature gas chromatography (PTGC) retention indices for drawing window plots is described. The separation of steroid derivatives by PTGC is improved by the use of a binary phase mixture which has been selected by means of a window plot. A novel, highly efficient method for packing columns is also described.
mesh_terms: D002849:Chromatography, Gas / Q000379:methods; D006801:Humans; D013256:Steroids / Q000652:urine*; D013329:Structure-Activity Relationship; D013696:Temperature
chemical_list: D013256:Steroids