Lipophilic vitamins sorbents

Polar inorganic sorbents. TLC on tradi tional straight phases such as alumina and silica is still the method of choice for many separation problems. Especially for separation of organic-soluble compounds such as lipophilic vitamins straight phase 11.C remains very successful. This is also demonstrated by the large number of applications on polar inorganic non-modified sorbents. 

Lipophilic vitamins, 1055-1077 vitamin A, 1056-1060 detection, 1059-1060 quantification, 1060 sorbents, 1056-1059 vitamin D, 1060-1066 detection, 1065 quantification, 1065 sorbents, 1063-1065 vitamin E, 1066-1071 detection, 1069-1070 quantification, 1070 sorbents, 1067-1069 vitamin K, 1071-1074 detection, 1074 quantification, 1074 sorbents, 1071-1074... 

At first reverse phase sorbents were prepared by impregnating the support with long-chain hydrocarbons such as paraffins and silicone oils to give packings of defined composition with the stationary phase held to the support by purely physical forces of attraction [53]. These materials though of use for the analysis of lipophilic substances, fats and waxes, steroids and fat soluble vitamins and dyes were unsatisfactory as the stationary phase can be washed off by the eluant which consequently lowers the capacity and effectiveness of the partition separation. 

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