METHOD OF SPECTROPHOTOMETRIC DETERMINATION OF CHROME (III) IN PRESENCE OF POTASSIUM BICHROMATE

摘要

the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 ways u0441u043fu0435u043au0442u0440u043eu0444u043eu0442u043eu043cu0435u0442u0440u0438u0447u0435u0441u043au043eu0433u043e u043eu043fu0440u0435u0434u0435u043bu0435u043du0438u00a0 chromium (iii) in the presence of u0431u0438u0445u0440u043eu043cu0430u0442u0430 u043au0430u043bu0438u00a0 in solutions. the method includes determining u0431u0438u0445u0440u043eu043cu0430u0442 - jonah, set his concentration in the test solution 0.10 and 0.14 m, u0432u0432u043eu0434u00a0u0442 u043au0430u043bu0438u00a0 hydroxide to u0441u043eu043eu0442u043du043eu0448u0435u043du0438 u00a0 with u0431u0438u0445u0440u043eu043cu0430u0442u043eu043c (0.8 - 1.4): 1.u0434u043bu00a0 u043fu043eu0432u044bu0448u0435u043du0438u00a0 sustainability u043eu0431u0440u0430u0437u043eu0432u0430u0432u0448u0435u0433u043eu0441u00a0 complex in time before the introduction of u043au0430u043bu0438u00a0 hydroxide u0432u0432u043eu0434u00a0u0442 u0442u0440u0438u043bu043eu043d b to its local concentration is 0.01 mm. the way to improve the sensitivity of u043fu043eu0437u0432u043eu043bu00a0u0435u0442 u043eu043fu0440u0435u0434u0435u043bu0435u043du0438u00a0 chromium (iii) is u043eu0431u043du0430u0440u0443u0436u0435u043du0438u00a0 u0441u043eu0441u0442u0430u0432u043bu00a0u0435u0442 0.02 mg / ml. 1, z. s - lu 3, table 2).