Possibility of rapid determination of low-level Sr-90 activity by combination of extraction chromatography separation and Cherenkov counting

Citation
Z. Grahek et al., Possibility of rapid determination of low-level Sr-90 activity by combination of extraction chromatography separation and Cherenkov counting, ANALYT CHIM, 399(3), 1999, pp. 237-247
Citations number
22
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
ANALYTICA CHIMICA ACTA
ISSN journal
00032670 → ACNP
Volume
399
Issue
3
Year of publication
1999
Pages
237 - 247
Database
ISI
SICI code
0003-2670(19991115)399:3<237:PORDOL>2.0.ZU;2-0
Abstract
The paper describes the examination of bonding of alkaline and alkaline-ear th elements from solutions of nitric, sulphuric, acetic and hydrochloric ac id on Sr.spec resin and their mutual separation. According to the obtained results, a procedure of isolation of Sr-90 from natural samples has been cr eated. It is shown that the strength of cation bonding depends on the acid applied and the solution composition. Chromatographic separation of stronti um from other cations is possible by means of nitric and sulphuric acids, w hile it is not possible with hydrochloric acid. Similarly, chromatographic separation of potassium from strontium and other elements is possible with 5 M nitric acid. The possibility of detection of Sr-90 on a low-level scint illation spectrometer by means of Cherenkov counting has been examined and the procedure of rapid determination in sediment and water samples has been created. The efficiency of a low-level scintillation spectrometer for Sr-9 0(Y-90) by means of Cherenkov counting has been determined. It has also bee n shown that it depends on the acid solution applied. The paper shows that Sr-90 can be determined by means of Cherenkov counting in water in the pres ence of low level activity of plutonium and americium. (C) 1999 Elsevier Sc ience B.V. All rights reserved.