高等学校化学学报

高等学校化学学报 ›› 1987, Vol. 8 ›› Issue (2): 119.

• 研究简报 • 上一篇    下一篇

PMBP负载泡塑萃取痕量铀

王明胜   

  1. 武汉大学化学系
  • 收稿日期:1985-07-11 出版日期:1987-02-24 发布日期:1987-02-24

Extraction of Trace U(Ⅵ) with PMBP-Loaded Polyurethane Foam

Wang Mingsheng   

  1. Department of Chemistry, Wuhan University, Wuhan
  • Received:1985-07-11 Online:1987-02-24 Published:1987-02-24

PDF (PC)

被引次数

6

摘要： 自Bowen提出用开孔聚氨酯泡塑富集痕量物质以来,有无负载的泡塑在富集分离中的应用受到广泛注意。但对锕系元素的泡塑富集研究不多。本文系统研究了PMBP负载泡塑从醋酸介质中萃取痕量铀(Ⅵ)。在最佳萃取条件下,一次萃取即可从大体积水中几乎定量地回收痕量铀,绝对富集因子达4500以上。用PMBP泡塑萃取富集,用偶氮胂Ⅲ光度测定,可分析大体积水样中低至xμg/l水平的铀。方法简便、快速。

Abstract: A study on extrection cf trace U(Ⅵ) with PMIP-loaded pclyurethane foam from water is described. The effect cf equilibrium time, concentration of acetic acid, cortent of U(Ⅵ), temperature and foreign ions is examined. Uranyl acetate can be quantitatively extracted by PMBP-loadod foam from 0.05.Macetic acid solution. Dis over 4.65×104and enrichment factor is over 4500. Anew procedure for preconcentration of trace U(Ⅵ) from large volume of water has been developed. Aprocedure for the PMBP foam extraction-arsenazo Ⅲ spectrophoto-metric determination of U(Ⅵ) at ppb level is cstablished.

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