A catalytic Spectrophotometric determination of arsenic

摘要

1.a quantity of u0441u043fu0435u043au0442u0440u043eu0444u043eu0442u043eu043cu0435u0442u0440u0438u0447u0435u0441u043au043eu0433u043e u043eu043fu0440u0435u0434u0435u043bu0435u043du0438u00a0 u043cu044bu0448u044cu00a0u043au0430, based on the interaction of hydrogen with u043cu044bu0448u044cu00a0u043au043eu0432u0438u0441u0442u043eu0433u043e, u0432u044bu0434u0435u043bu00a0u044eu0449u0435u0433u043eu0441u00a0 test method u043eu0441u0441u0442u0430u043du043eu0432u043bu0435u043du0438u0438 u0441u043eu0435u0434u0438u043du0435u043du0438u00a0 u0433u0443u0442u0446u0430u0439u0442u0430 and u0446u0438u0430u043du0438u0441u0442u043eu0439 mercury (ii) with the formation of u0446u0438u0430u043du0438u0441u0442u043eu0432u043eu0434u043eu0440u043eu0434u043du043eu0439 acid, u043au043eu0442u043eu0440u0430u00a0 initiates oxidation u0431u0435u043du0437u0438u0434 ina u0441u043eu043bu00a0u043cu0438 divalent copper, u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0 orderwhat u043au043eu043bu043eu0440u0438u043cu0435u0442u0440u0438u0447u0435u0441u043au0438u0439 effect the proposed reaction is based on the catalytic properties of cyanide - ions in the redox reaction between the oxide benz u043eu0444u0443u0440u0430u0437u0430u043du0430 1.3 and p - u043du0438u0442u0440u043eu0431u0435u043du0437u0430u043bu044cu0434u0435u0433u0438u0434u043eu043c.;2. method for u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0 1, so that the water - alcohol (1:1 by volume) 0.2 m solution of u0433u0438u0434u0440u043eu043eu043au0438u0441u0438 u043au0430u043bu0438u00a0 containing cyanide - ions, u043eu0431u0440u0430u0431u0430u0442u044bu0432u0430u0435u0442u0441u00a0 0.01 m solution of ox spirit ida u0431u0435u043du0437u043eu0444u0443u0440u0430u0437u0430u043du0430 1.3 and 0.2 m spirit in the p - u043du0438u0442u0440u043eu0431u0435u043du0437u0430u043bu044cu0434u0435u0433u0438u0434u0430 in the ratio of 3: 1: 1.;3. method for u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0 1, so that the measurement of optical density of the product u0432u043eu0441u0441u0442u0430u043du043eu0432u043bu0435u043du0438u00a0 oxide u0431u0435u043du0437u043eu0444u0443u0440u0430u0437u0430u043du0430 1.3 u043fu0440u043eu0432u043eu0434u0438u0442u0441u00a0 with wavelength of 435 nm in u0441u043fu0435u043au0442u0440u043eu0444u043eu0442u043eu043cu0435u0442u0440u0435 at 20 min and u043fu043eu043bu0443u0447u0435u043du043du0430u00a0 optical density value u0438u0441u043fu043eu043bu044cu0437u0443u0435u0442u0441u00a0 u0434u043bu00a0 quantitative u043eu043fu0440u0435u0434u0435u043bu0435u043du0438u00a0 u043cu044bu0448u044cu00a0u043au0430 (iii) u0433u0440u0430u0434u0443u0438u0440u043eu0432u043eu0447u043du043eu043cu0443 schedule.