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本工作以α-羟基异丁酸(α-HIBA)为淋洗剂,用聚苯乙烯磺酸型阳离子树脂(002×8型,粒度为40～50μm)交换柱,从克量级的天然Yb辐照靶中分离出了微克量的~(173,174)Lu。研究了温度、载体量等因素对分离效果的影响,并分别研究了阳离子交换法、浓HClO_4-HNO_3破坏法、氢氧化物沉淀法、HDEHP萃取法和HDEHP萃取色层法从介质中去除α-HIBA的实验条件。最终在0.07 mol/L α-HIBA淋洗液(pH=6.2),流速5 mL/min,柱温55℃的条件下,经φ20 mm×500 mm交换柱分离2次,成功从550 mg辐照样品中得到0.8 μg~(173,174)Lu,收率为98%,对Yb的去污因子大于10~4。
In this work, α-hydroxyisobutyric acid (α-HIBA) was used as eluent to exchange column with polystyrenesulfonic acid type cation resin (002 × 8, size 40 ~ 50μm) Microparticles of ~ (173,174) Lu were isolated from the irradiated target. The effects of temperature, amount of carrier and so on on the separation were studied. The effects of temperature, the amount of carrier and other factors on the separation were studied. The effects of temperature, amount of carrier, HIBA experimental conditions. Finally, it was separated twice by φ20 mm × 500 mm exchange column under the conditions of 0.07 mol / L a-HIBA eluent (pH = 6.2), flow rate of 5 mL / min and column temperature of 55 ℃. The sample obtained 0.8 μg ~ (173,174) Lu, the yield was 98%, the decontamination factor for Yb greater than 10 ~ 4.