用UTEVA树脂分离铀-α谱仪测量铀同位素的分析方法

Abstract

Abstract: An analysis procedure for the determination of uranium isotopes in aerosol samples using UTEVA resin and alpha spectrometer in hydrochloric acid system was developed. Uranium was totally transferred to the solution by using mixed acids and H₂O₂ after fusing at 600 ℃ for 4 hours. Ascorbic acid was added to convert the sample solution to reduction system, and then uranium was purified by UTEVA resin column, followed by source electroplating and measurement with an alpha spectrometer. Spiked samples and real aerosol samples were analyzed to validate the procedure. All the measured results agreed very well with the target values. The chemical recoveries were stable and higher than 95% with coefficient variation of ±5%.

Key words: uranium isotopes, aerosol, UTEVA resin, reduction system

CLC Number:

O657.4

LI Zhou, LI Pengxiang, YANG Hailan, MA Xuyuan, LIN Haipeng, GAO Zequan, HAN Yuhu, REN Xiaona. Determination of uranium isotopes in aerosol samples using UTEVA resin and alpha spectrometer[J].RADIATION PROTECTION, 2022, 42(2): 119-123.

References

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Determination of uranium isotopes in aerosol samples using UTEVA resin and alpha spectrometer

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