METHOD OF ANALYSIS OF SAMARIUM AND EUROPIUM

摘要

the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 to analytical chemistry, namely the ways of u043eu043fu0440u0435u0434u0435u043bu0435u043du0438u00a0 u0441u0430u043cu0430u0440u0438u00a0 and u0435u0432u0440u043eu043fu0438u00a0, and can be used in the analysis of highly pure lanthanum oxide u0438u0434u043eu0432 to u043fu043eu0432u044bu0448u0435u043du0438u00a0 sensitivity. this u043du0430u0432u0435u0441u043au0443 u0434u043bu00a0 sample of u0440u0430u0441u0442u0432u043eu0440u00a0u044eu0442 in u0441u043eu043bu00a0u043du043eu0439 acid, u0432u044bu043fu0430u0440u0438u0432u0430u044eu0442 its surplus and u0432u043du043eu0441u00a0u0442 solution in the measuring volume of 25 ml flask.three test tubes u0433u043eu0442u043eu0432u00a0u0442 mixture containing 0.5 ml of u0430u0446u0435u0442u0430u0442u043du043e - ammonia buffer, 0.5 ml of 0.5% gelatin solution, 0.1 ml of solution of an analyzed sample. in the first test tube u0432u0432u043eu0434u00a0u0442 standard saline solution u0441u0430u043cu0430u0440u0438u00a0 (u0435u0432u0440u043eu043fu0438u00a0), the second two times more. u0432u0432u043eu0434u00a0u0442 2 ml 1.10-2 m waste product of alcohol solution u0434u0438u0430u043du0442u0438u043fu0438u0440u0438u043bu043fu0440u043eu043fu0438u043bu043cu0435u0442u0430u043du0430 and 1.0 ml 1.10-2 m u0434u0438u043au0435u0442u043eu043du0430 waste product of alcohol solution.after 5 min u0438u0437u043cu0435u0440u00a0u044eu0442 intensity u043bu044eu043cu0438u043du0435u0441u0446u0435u043du0446u0438u0438 u0441u0430u043cu0430u0440u0438u00a0 of 630 - 660 nm, u0435u0432u0440u043eu043fu0438u00a0 of 590 - 625 nm. according to the content in the sample and the additives are u0441u0430u043cu0430u0440u0438u00a0 u0435u0432u0440u043eu043fu0438u00a0. in determining the use - u0434u0438u043au0435u0442u043eu043du044b common formula cf3 (cf2) - o - n - co - CH2 - co - r, where n = 1, 2, with n = 1, r @ or C6H5, when n = 2, r = - C6H5.u043cu043eu043bu044cu043du044bu0435 extra - u0434u0438u043au0435u0442u043eu043du043eu0432 and u0434u0438u0430u043du0442u0438u043fu0438u0440u0438u043bu043fu0440u043eu043fu0438u043bu043cu0435u0442u0430u043du0430 u0441u043eu0441u0442u0430u0432u043bu00a0u044eu0442 7 to 12 and 14 and 24 respectively. the optimal value of the test solution ph 5.0 - 6.0. in these u0443u0441u043bu043eu0432u0438u00a0u0445 sensitivity u043eu043fu0440u0435u0434u0435u043bu0435u043du0438u00a0 u0441u0430u043cu0430u0440u0438u00a0 and u0435u0432u0440u043eu043fu0438u00a0 u0441u043eu0441u0442u0430u0432u043bu00a0u0435u0442 2.10-6 and 1.10-8% respectively. 3, table 2).