离子液体从水溶液中萃取铀。
Uranium extraction from aqueous solutions by ionic liquids.
作者信息
Srncik M, Kogelnig D, Stojanovic A, Körner W, Krachler R, Wallner G
机构信息
Institute of Inorganic Chemistry, University of Vienna, Währinger Strasse 42, A-1090 Vienna, Austria.
出版信息
Appl Radiat Isot. 2009 Dec;67(12):2146-9. doi: 10.1016/j.apradiso.2009.04.011. Epub 2009 May 4.
For determining natural levels of (236)U with its environmental abundance of 10(-16)% rather large sample volumes (approximately 30L) are necessary, therefore the conventional radiochemical uranium analysis (pre-concentration and column chromatography) is very time consuming. To speed up the procedure hydrophobic ionic liquids (ILs) were evaluated as a potential extraction agent for uranium from aqueous solutions. High selectivity and efficiency for uranium compared to calcium and magnesium in natural water was achieved with tricaprylmethylammonium thiosalicylate, [A336][TS]. Uranium was stripped successfully from the investigated ILs with 2M HNO(3).
由于要测定环境丰度为10⁻¹⁶%的（236）U的天然含量，需要相当大的样品体积（约30L），因此传统的放射化学铀分析（预浓缩和柱色谱法）非常耗时。为了加快分析过程，对疏水性离子液体（ILs）作为从水溶液中萃取铀的潜在萃取剂进行了评估。使用硫代水杨酸三辛基甲基铵盐（[A336][TS]），在天然水中实现了对铀相对于钙和镁的高选择性和高效率萃取。用2M HNO₃成功地从所研究的离子液体中反萃出铀。
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