METHOD OF PHOTOMETRIC DETERMINATION OF BORON IN STEELS

摘要

the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 to analytical chemistry and can be used in determining the u043cu0438u043au0440u043eu043au043eu043bu0438u0447u0435u0441u0442u0432 bora (2 to 10)% in u0441u0442u0430u043bu00a0u0445. purpose u0438u0437u043eu0431u0440u0435u0442u0435u043du0438u00a0 u00a0u0432u043bu00a0u0435u0442u0441u00a0 increased selectivity and u0447u0443u0432u0441u0442u0432u043c) u043eu043fu0440u0435u0434u0435u043bu0435u043du0438u00a0 and reduce the time of analysis.the purpose of u0434u043eu0441u0442u0438u0433u0430u0435u0442u0441u00a0 by u0440u0430u0441u0442u0432u043eu0440u0435u043du0438u00a0 sample material in a mixture of acids and consistent u0434u043eu0431u0430u0432u043bu0435u043du0438u00a0 d analyte solution concentrated sulphuric kee slots (3.5 - 4.0), u0440u0430u0441u0442u0437u043eu0440u0430 4.4 u0434u0438u043eu043au0441u0438u0431u0435u043du0437u043eu0438u043bu043cu0435u0442u0430u043du0430 or 4.4 u0434u0438u043cu0435u0442u043eu043au0441u0438u0431u0435u043du0437u043eu0438u043bu043cu0435u0442u0430u043du0430 in u043bu0435u0434u00a0u043du043eu0439 acetic acid in such a manner that u0441u0443u043cu043cu0430u0440u043du0430u00a0 u043au043eu043du0446u0435u043du0442u0440u0430u0446u0438u00a0 sulphuric and cc u0441u0443u0441u043du043eu0439 acids u0441u043eu0441u0442u0430u0432u043bu00a0u043bu0430 16.2 - 16.9 mol / l sulfuric and acetic acids in the ratio of 1: (2 - 1), after which the u0432u0432u043eu0434u00a0u0442 concentrated phosphoric acid in the amount of 1.5 to 2.0 mol / l and u0444u043eu0442u043eu043cu0435u0442u0440u0438 given t the colored solution. 3, table 2). with / to