| Abstract [eng] |
The aim of this study was to design and investigate a series of new water-immiscible solvents based on perfluorinated compounds as well as to apply the solvents for microextraction of selected organic compounds. In the first part, six hydrophobic eutectic solvents composed of menthol, tetrabutylammonium chloride and tetrahexylammonium chloride as hydrogen-bond acceptors and trifluoroacetic acid and hexafluoroisopropanol as hydrogen-bond donors were prepared and investigated. In the second part, eight hydrophobic supramolecular solvents composed of tetrabutylammonium chloride and tetradecyltrimethylammonium bromide as amphiphiles and four perfluorinated compounds (hexafluoroisopropanol, trifluoroacetic acid, pentafluoropropionic acid, and heptafluorobutyric acid) as coacervation-inducing agents were investigated. The third part of the study is devoted to a development of a novel hexafluoroisopropanol-based aqueous two-phase system using a hydrophilic aprotic organic solvent as the phase separation inducing agent. The extraction properties of the developed solvents were evaluated. Developed solvents were successfully applied for the microextraction of parabens, phthalates and cationic dyes from aqueous samples prior to analysis by high-performance liquid chromatography. |
