离子交换色谱流动注射分光光度法测定乏燃料元件溶解液中的钚

DETERMINATION OF PLUTONIUM IN IRRADIATED URANIUM FUEL SOLUTION BY FLOW INJECTION ANALYSIS WITH ION EXCHANGER AND SPECTROPHOTOMETRIC DETECTOR

为测定乏燃料元件溶解液中钚含量,建立了一个新方法——离子交换色谱流动注射分光光度法。组装了一套仪器,用小颗料Y-701阴离子树脂,自动进样,流通池分光光度测量,采用了合适的洗脱液,获得了理想的钚峰。在Pu/U≈3×10^(-3)时,测定约3μg/ml的钚,相对标准偏差小于5％,25min可完成一次测量,方法简单,快速。

In this paper,a new method,flow injection analysis with ion exchanger and spectrophotometric detector is reported for determination of plutonium in irradiated uranium fuel elements.A device is fixed in which a column is filled with Y-701 fine particle anion exchange resin. An automatic sample taken and a flow spectrophotometric detector are included. In this work a new efficient eluant is used. A good peak of plutonium without tail is given by the eluant. In case the ratio of Pu to U is 3×10-3 and concentration of plutonium is about 3μg/ml,the relative standard deviation is better than 5 %. It takes about 25 minutes to analyse one sample. The procedure is simple and fast.