PROCEDURE ESTABLISHING CONTENT OF IMPURITIES IN URANIUM HEXAFLUORIDE Russian patent published in 2004 - IPC

FIELD: analysis of materials. SUBSTANCE: procedure establishing content of impurities in uranium hexafluoride consists in separation of impurities by sorption of uranium hexafluoride on sodium fluoride in reactor installed behind metering valve. In this case impurities not sorbed on sodium fluoride flow freely into ion source of mass spectrometer. This approach makes it feasible to enhance flow rate of sample through metering valve and to raise sensitivity by that. Establishment of molar share of impurities is conducted by relative method with the use of calibration mixture with known content of impurities. Bleeding-in of calibration mixture and sample is carried out in sequence. EFFECT: enhanced sensitivity and accuracy of mass spectrometric method of measurement. 1 dwg, 1 tbl