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本文叙述了用α-安息香肟-乙酸乙醇从裂变产物中萃取分离测定~(99)Mo的方法。研究了RCl、HNO_3、HF、H_2C_2O_4、H_2O_2的浓度和α-安息香肟与钼的克分子比对钼萃取率的影响。在不同酸度下α-安息香肟对Nb、Ru、Te的萃取情况,着重研究了Nb的去污方法。对用PbMoO_4沉淀形式测定钼的化学收率,做了必要的实验,以取代α-安息香肟钼灼烧制源的方法。用本文推荐的程序(两次α-安息香肟萃取,PbMo0_4制源)分离出的~(99)Mo经Ge(Li)γ谱仪鉴定、在25天内未发现放射性杂质,方法精密度为1.1%。
This paper describes a method for the extraction and determination of ~ (99) Mo from fission products using α-benzoin-oxime-acetic acid ethanol. The effects of concentration of RCl, HNO 3, HF, H 2 C 2 O 4 and H 2 O 2 and molar ratio of α-benzoin-oxime to molybdenum on molybdenum extraction efficiency were studied. At different acidity α-benzoin oxime extraction of Nb, Ru, Te, focused on the decontamination of Nb. In order to determine the chemical yield of molybdenum by the precipitation of PbMoO_4, the necessary experiment was made to replace the α-benzoinoxime molybdenum burning source. ~ (99) Mo separated by the procedure proposed in this paper (twice α-benzoin-oxime extraction, source of PbMo0_4) was identified by Ge (Li) γ spectrometer and no radioactive impurities were found within 25 days. The precision of the method was 1.1% .