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Simultaneous analysis method of 89Sr and 90Sr in liquid sample using automated separation system
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2020, v.33 no.6, pp.274-284
https://doi.org/10.5806/AST.2020.33.6.274
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(2020). Simultaneous analysis method of 89Sr and 90Sr in liquid sample using automated separation system. Analytical Science and Technology, 33(6), 274-284, https://doi.org/10.5806/AST.2020.33.6.274
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Abstract
This study described the analytical method for simultaneous determination of 89Sr and 90Sr in liquid sample using automated separation system. Radiostrontium in 0.5 kg of liquid sample was concentrated as SrCO3 to reduce the volume of sample, and purified from the sample using Sr-resin 2 mL (BV, Bed volume). The behavior of Sr and interferences such as Ba, Ca and Y were estimated with various flow rate ranging from 1 to 4 mL min−1. The detailed procedure for the purification of Sr on Sr-resin was presented. The purified radiostronitum was measured in Cerenkov mode and then measured in Scintillation mode by mixing scintillation cocktail. The measured value in both modes were used to calculate the activity of 89Sr and 90Sr. The performance tests were carried out the lab-control-sample having various activity ratio of between 89Sr and 90Sr. The recovery of Sr was ranged from 68 to 94 %. The relative bias of 89Sr activity was ranged from -5 to 20 %, and it was ranged from -10 to 10 % for 90Sr.
- keywords
- <TEX>$^{89}Sr$</TEX>, <TEX>$^{90}Sr$</TEX>, LSC, liquid sample, automated separation
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