络阳离子型铀电极的研究与应用

STUDY AND APPLICATION OF COMPLEX CATION SELECTIVE ELECTRODE FOR DETERMINATION OF URANIUM

摘要: <正> 随着原子能工业的发展,对工艺流程中铀的快速测定和自动监测均提出了更高的要求。目前,微量铀的分析一般采用荧光法、比色法、极谱法和各种射线分析法。对此,文献上有大量的报道。七十年代初,D.L.Manning,J.R.Entwistle等先后介绍了两种液膜型铀电极。他们采用的活性材料,前者为有机磷酸盐,后者为UO_2~(2+)-苯甲酸根-次甲基兰三元络合

Abstract: A new type of ion-selective electrode (ISE) with response to the complex cation UO2(DMSO)2 5+ is described. The electrode membrane is made of PVC containing the associate UO2(DMSO)5 (Φ4B)2 as electroactive material. The electrode has linear response within the concentration range 10-1 to 10-4 M. In combination with preliminary separation of uranium using a TBP-extrel-resin the electrode can be used for the determination of uranium in various samples. The results are in good agreement with those of chemical analysis.