萃取色层法测定UF_6中裂变产物总β和总γ放射性

@林灿生 $中国原子能科学研究院!北京@杨留成$ 中国原子能科学研究院!北京@黄美新 $中国原子能科学研究院!北京@吕锋$ 中国原子能科学研究院!北京@陈国安 $中国原子能科学研究院!北京@纪力强$ 中国原子能科学研究院!北京@张增瑞$中国原子能科学研究院!北京

DETERMINATION OF GROSS β-AND GROSS γ-RADIOACTIVITY OF THE FISSION PRODUCTS IN UF_6 BY EXTRACTION CHROMATOGRAPHY

摘要: 文章研究了在含F~-和NO_3~-的溶液中,~(95)Zr,~(95)Nb,~(106)Ru,~(144)Ce,~(234)Th和U在CL-TBP柱上的淋洗行为。选择了~(95)Zr,~(95)Nb,~(106)Ru及~(144)Ce等主要裂变产物与~(234)Th及U分离的条件。建立了对UF_6样品中裂变产物的总β和总γ放射性的测定方法。对于总β放射性为天然铀β放射性7.8％的样品,标准偏差为±3.5％;对总γ放射性为天然铀γ放时性17％的样品,标准偏差为±3.1％。
- 萃取色层 ,
- TBP ,
- UF_6 ,
- 裂变产物
Abstract: The elution behaviors of ~(95)Zr, ~(95)Nb, ~(106)Ru, ~(144)Ce, ~(234)Th and U in solutionscontaining F~- and NO_3~- on the CL-TBP column were investigated. Pro-cedures were developed for the separation of ~(95)Zr, ~(95)Nb, ~(106)Ru and ~(144)Cefrom ~(234)Th and U. A method was established for the determination of gross β-and gross γ- radioactivity of fission products in UF_6. The standard deviationis ±3.5% for the samples with a gross β-activity amounting to 7.8% of thatof natural uranium, while the standard deviation is ±3.1% for the sampleswhose gross γ- activity amounts to 17% of that of natural uranium.
- Extraction chromatography ,
- ,
- TBP ,

[1]	ASTM-C761-75(1975).
[2]	林灿生等,六氟化铀中裂变产物放射性的测定原子能院内部资料,(1981) .
[3]	林灿生等,六氟化铀中主要裂变产物总放射性的直接测定法,原成-[83-002] (1983) .
[4]	林灿生等,原子能科学技术,(5), 563(1984) .
[5]	Kicnberger, C. A. et al., K1078 (1953).
[6]	Fym, A. R., K-1757 (1968).