Estimation of 90Sr in reprocessing streams using pre-packed extraction chromatographic column of 4,4′(5′)-bis(tert-butylcyclohexano)-18-crown-6 impregnated on amberlite XAD-7

被引:3
|
作者
Dileep, C. S. [1 ]
Jagasia, Poonam [2 ]
Das, S. K. [1 ]
Dhami, Prem Singh [1 ]
Tripathi, S. C. [1 ]
Gandhi, P. M. [1 ]
Tomar, B. S. [3 ]
机构
[1] Bhabha Atom Res Ctr, Fuel Reproc Div, Mumbai 400085, Maharashtra, India
[2] Bhabha Atom Res Ctr, Proc Dev Div, Mumbai 400085, Maharashtra, India
[3] Bhabha Atom Res Ctr, Radioanalyt Chem Div, Mumbai 400085, Maharashtra, India
关键词
Sr-90; analysis; Extraction chromatography; 4,4 '(5 ')-bis(tert-butylcyclohexano)-18-crown-6; PUREX process; THOREX process; ACIDIC NITRATE MEDIA; STRONTIUM; Y-90;
D O I
10.1007/s10967-013-2534-7
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
This paper describes a method for the estimation of Sr-90 in various PUREX and THOREX process streams. Radiostrontium present in the sample is loaded on an extraction chromatographic column containing 4,4'(5')-bis(tert-butylcyclohexano)-18-crown-6 (DtBuCH18C6) in 1-octanol impregnated on amberlite XAD-7 after diluting it appropriately in about 3.0 M HNO3. The column is then washed using 3 M HNO3 to remove the impurities completely and finally Sr-90 is eluted in 5 mL of water and subjected to beta counting without time delay. Recovery of Sr-90 separation is studied in presence of varying quantity of uranium and thorium in the sample. The method is used to estimate Sr-90 in actual process samples containing Sr-90 activity in wide range of activity varying from Bq/mL to Ci/L. The results are compared with those obtained by conventional radiochemical precipitation method and found to agree within +/- 5 %.
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页码:105 / 110
页数:6
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