title: Selectivity of long chain stationary phases in reversed phase liquid chromatography.
abstract: A series of commercial monomeric and polymeric C(18), C(27), and C(30) stationary phases were compared with immobilized poly(ethylene-co-acrylic acid) stationary phases synthesized in-house. The columns were characterized on the basis of methylene selectivity, silanol activity, metal activity, pore size, shape selectivity, and the ability to separate tocopherol isomers and carotenoid isomers. Monomeric and polymeric C(30) phases were shown to yield excellent separations of the tocopherol isomers while the polymeric C(30) and polyethylene phases were more appropriate to the separation of carotenoids.
authors.affiliation: Chemical Science and Technology Laboratory, Analytical Chemistry Division, National Institute of Standards and Technology, Gaithersburg, MD 20899-8392, USA. catherine.rimmer@nist.gov
authors.forename: Catherine A
authors.initials: CA
authors.lastname: Rimmer
authors.forename: Lane C
authors.initials: LC
authors.lastname: Sander
authors.forename: Stephen A
authors.initials: SA
authors.lastname: Wise
mesh_terms: D000180:Acrylic Resins / Q000138:chemical synthesis / Q000737:chemistry*; D002338:Carotenoids / Q000737:chemistry*; D002853:Chromatography, Liquid / Q000379:methods; D006838:Hydrocarbons / Q000737:chemistry*; D011095:Polyethylenes / Q000138:chemical synthesis / Q000737:chemistry*; D012015:Reference Standards; D012680:Sensitivity and Specificity; D024505:Tocopherols / Q000737:chemistry*
chemical_list: D000180:Acrylic Resins; D006838:Hydrocarbons; D011095:Polyethylenes; D002338:Carotenoids; C083316:(polyethylene-acrylic acid) copolymer; D024505:Tocopherols