METHOD OF QUANTITATIVE DETERMINATION OF PYROGALLOL AND GALLIC ACID IN AQUEOUS SOLUTIONS

摘要

the invention u043au0430u0441u0430u0435u0442u0441u00a0 analytical chemistry, in particular u043eu043fu0440u0435u0434u0435u043bu0435u043du0438u00a0 u043fu0438u0440u043eu0433u0430u043bu043bu043eu043bu0430 and u0433u0430u043bu043bu043eu0432u043eu0439 acid in aqueous solutions, which can be used in the production ve. the goal is to separate u043eu043fu0440u0435u0434u0435u043bu0435u043du0438u00a0 such substances.u0434u043bu00a0 this sample at ph 7 to 8 u044du043au0441u0442u0440u0430u0433u0438u0440u0443u044eu0442 mixture u0442u0440u0438u043fu0440u043eu043fu0438u043bu0444u043eu0441u0444u0430u0442u0430 and u0446u0438u043au043bu043eu0433u0435u043au0441u0430u043du0430 (u043cu043eu043bu044cu043du043eu0435 ratio (0.59 - 0.85): (0.15 to 0.47), u043eu0442u0434u0435u043bu00a0u044eu0442 organic layer u0440u0435u044du043au0441u0442u0440u0430u0433u0438u0440u0443u044eu0442 and reek u0441u0442u0440u0430u043au0442 u0444u043eu0442u043eu043cu0435u0442u0440u0438u0440u0443u044eu0442. the aqueous layer is again the u044du043au0441u0442u0440u0430u0433u0435u043du0442u043eu043c at ph 2 to 3, u043eu0442u0434u0435u043bu00a0u044eu0442 organic layer and its u0444u043eu0442u043eu043cu0435u0442u0440u0438u0440u0443u044eu0442.in this case, the lower limit of u0434u043bu00a0 u043fu0438u0440u043eu0433u0430u043bu043bu043eu043bu0430 u043eu043fu0440u0435u0434u0435u043bu0435u043du0438u00a0 u0441u043eu0441u0442u0430u0432u043bu00a0u0435u0442 1 mg / l, and the u0434u043bu00a0 u0433u0430u043bu043bu043eu0432u043eu0439 acid - 0.2 mg / l to 2 mg / l u0434u043bu00a0 both substances without u0440u0430u0437u0434u0435u043bu0435u043du0438u00a0 known the case. 3, table 2).