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研究了六氟化铀水解液中微量氯离子的放化测定。用Al(NO_3)_3络合大量氟离子,在微酸性条件下,加含有~(110m)Ag的AgNO_3溶液,使与氯离子生成~(110m)AgCl沉淀,用超滤膜过滤,于Nal(Tl)探测器测量~(110m)AgCl的γ放射性。从工作曲线查得氯离子含量。测定范围为2—40ppm,相对标准偏差为±10%。方法简便,快速灵敏。实际样品的分析结果经多种不同方法核对,彼此符合。
The radiochemical determination of trace chloride in hydrolyzate of uranium hexafluoride was studied. A large amount of fluoride ion was complexed with Al (NO_3) _3, AgNO_3 solution containing ~ (110m) Ag was added to produce ~ (110m) AgCl with chloride ions under slightly acidic conditions, Tl) detector measures γ-radioactivity of ~ (110m) AgCl. Check chloride ion content from the working curve. The measurement range is 2-40ppm with a relative standard deviation of ± 10%. The method is simple, fast and sensitive. The results of the actual sample analysis are verified by a number of different methods and are in accordance with each other.