METHOD OF DETERMINING VITAMINS A IN BIOLOGICAL MATERIAL

摘要

the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 to analytical chemistry. the purpose of u0438u0437u043eu0431u0440u0435u0442u0435u043du0438u00a0 acceleration and simplification of analysis, and also improve the accuracy of u0434u043eu0441u0442u0438u0433u0430u0435u0442u0441u00a0, extractions of vitamin a are at a temperature of 65 - 75 & deg; c for 6 - 1 0 min two-component ex u0442u0440u0430u0433u0435u043du0442u043eu043c next the ratio of ingredients,.95,0 - 98.0%, isopropyl alcohol; water 5.0 2.0, and analyzing the obtained extract on u0436u0438u0434u043au043eu0441u0442u043du043eu043c u0445u0440u043eu043cu0430u0442u043eu0433u0440u0430u0444u0435 using sorbent u0441u0438u043bu0430u0441u043eu0440u0431 SPH satellite and u044du043bu044eu0435u043du0442u0430 u0441u043bu0435u0434u0443u044eu0449u0435u0433 on the whole, about.% n - propanol, acetonitrile - water 42, 50: 8. table 3 u0438u043b., 4.