Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2011, Vol. 22 ›› Issue (2): 95-98 doi: 10.13538/j.1001-8042/nst.22.95-98

• RADIOCHEMISTRY, RADIOPHARMACEUTICALS AND NUCLEAR MEDICIN • Previous Articles     Next Articles

Radiolytic organics in γ-ray irradiated aqueous solution of N,N-diethylhydroxylamine

WANG Jinhua1,ZHANG Jie1 WU Minghong1 XU Gang1 BAO Borong1 SUN Xilian1 ZHENG Weifang2 HE Hui2 ZHANG Shengdong2   

  1. 1Shanghai Applied Radiation Institute,School of Environmental and Chemical Engineering,Shanghai University,Shanghai 200444,China 2Radiochemistry Department,China Institute of Atomic Energy,Beijing 102413,China
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WANG Jinhua, ZHANG Jie WU Minghong, XU Gang, BAO Borong, SUN Xilian, ZHENG Weifang, HE Hui, ZHANG Shengdong . Radiolytic organics in γ-ray irradiated aqueous solution of N,N-diethylhydroxylamine.Nuclear Science and Techniques, 2011, 22(2): 95-98     doi: 10.13538/j.1001-8042/nst.22.95-98

Abstract:

N,N-diethylhydroxylamine (DEHA) is a novel salt-free reducing agent used in separating Pu and Np from U in the reprocessing of spent nuclear fuel.In this paper,we report the study on γ-radiolysis of DEHA in water and its radiolytic liquid organics by gas chromatography.The radiolysis rate of DEHA increases with the absorbed dose,but decreases with the primary DEHA concentration at 0.1-0.5 mol?L-1 irradiated to 10-1000 kGy.The main organics produced in radiolysis of DEHA are acetaldehyde,acetic acid and ethanol.The concentration of acetaldehyde increases with the primary DEHA concentration and the absorbed dose at ≤500 kGy,but over 500 kGy it decreases with increasing dose.The dependence of the concentration of acetic acid on the absorbed dose is similar to that of acetaldehyde,with a lower turning point of the dose,though.The ethanol concentration changes differently among the irradiated samples of different primary DEHA concentrations,and this is discussed.The maximum concentrations of acetaldehyde,acetic acid and ethanol are 0.029,0.014 and 0.028 mol·L-1,respectively.

Key words: N,N-Diethylhydroxylamine, γ-radiolysis, Liquid organics, Reprocessing of spent fuel