Development of an Automatic Method for Americium and Plutonium Separation and Preconcentration Using an Multisyringe Flow Injection Analysis-Multipumping Flow System

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• 作者：Yamila Fajardo ; Laura Ferrer ; Enrique Gó ; mez ; Francesca Garcias ; Monserrat Casas ; V&iacute ; ctor Cerdà
• 刊名：Analytical Chemistry
• 出版年：2008
• 出版时间：January 1, 2008
• 年：2008
• 卷：80
• 期：1
• 页码：195 - 202
• 全文大小：229K
• 年卷期：v.80,no.1(January 1, 2008)
• ISSN：1520-6882

文摘

A new procedure for automatic separation and preconcentration of ²⁴¹Am and ^239+240Pu from interfering matrixes using transuranide (TRU)-resin is proposed. Combination of the multisyringe flow injection analysis andmultipumping flow system techniques with the TRU-resinallows carrying out the sampling treatment and separationin a short time using large sample volumes. Americiumis eluted from the column with 4 mol L^-1 hydrochloricacid, and then plutonium is separated via on-column Pu(IV) reduction to Pu(III) with titanium(III) chloride. Thecorresponding activities are measured off-line, with arelative standard deviation of 3% and a lower limit ofdetection of 0.004 Bq mL^-1, by using a multiplanchet low-background proportional counter.