Abstract
The potential of a newly synthesized fluorinated copolymer of perfluoro(3,6-dioxa-4-methyl-8-nonene)sulfonyl fluoride with ethylene (AE FS-101SK) as a modifier of eluent in liquid chromatography and of background electrolyte in capillary electrophoresis is studied. It was found that, in reversed-phase HPLC, the use of a fluorine-containing modifier improves efficiency for hydrophobic adsorbates (steroid hormones and fat-soluble vitamins). In capillary electrophoresis, AE FS-101SK added to a background electrolyte can both modify the quartz capillary walls and act as a pseudostationary phase, enabling the separation of neutral analytes. In the simultaneous use of a fluorinated polymer modifier and sodium dodecyl sulfate in the composition of the background electrolyte, efficiency of 900 000 theoretical plates/m was achieved in the separation of steroid hormones by micellar electrokinetic chromatography.
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