METHOD OF RADIOCHEMICAL DETERMINATION OF STRONTIUM-89 AND STRONTIUM-90

摘要

the method is used in u0440u0430u0434u0438u043eu0435u043au043eu043bu043eu0433u0438u0447u043du0438 tests for determination of sr 89 and sr 90 in foods and food products, water, soil and other.the measurement model is u0445u0438u043cu0438u0447u0435u0441u043au0438u0434u043eu0431u0438u0432 60-70%, u0440u0430u0434u0438u043eu0445u0438u043cu0438u0447u0435u0441u043au0438 clean u043du0435u0445u0438u0433u0440u043eu0441u043au043eu043fu0438u0447u0435u043du0438 with constant in time composition.u0432u043au043bu044eu0447u0432u0430u043fu0440u043eu0431u043eu0432u0437u0435u043cu0430u043du0435 u043fu0435u043fu0435u043bu043du043eu0442u043e method, determination of content, dissolution and concentration of the sample adding supports for sr and ca and u0430u043du0442u0438u043du043eu0441u0438u0442u0435u043b for u0441s.sr settles in the form of sru0441u043e3 in environment of an alkaline solution of edta in which it precipitates out as u0432u0430u0441r04 formation and by edta complexes and subsequent displacement of she x of sr by titration with 0.01 m solution of znu043e dissolved in a minimal amount of 30% - u0435u043du0440u0430u0437u0442u0432u043eu0440 (nu043d4) 2u0441u043e3.