| Li Zhou,Li Pengxiang,Ma Xuyuan,Song Qinnan,Gao Zequan,Han Yuhu,Ren Xiaona.Application of 210Bi removal by anion exchange resin in 90Sr analysis[J].Chinese Journal of Radiological Medicine and Protection,2021,41(11):847-850 |
| Application of 210Bi removal by anion exchange resin in 90Sr analysis |
| Received:April 06, 2021 |
| DOI：10.3760/cma.j.issn.0254-5098.2021.11.009 |
| KeyWords:90Sr analysis Bismuth removal Anion exchange resin |
| FundProject: |
| Author Name | Affiliation | E-mail | | Li Zhou | China Institute for Radiation Protection, Taiyuan 030006, China | | | Li Pengxiang | China Institute for Radiation Protection, Taiyuan 030006, China | | | Ma Xuyuan | China Institute for Radiation Protection, Taiyuan 030006, China | | | Song Qinnan | China Institute for Radiation Protection, Taiyuan 030006, China | | | Gao Zequan | China Institute for Radiation Protection, Taiyuan 030006, China | | | Han Yuhu | China Institute for Radiation Protection, Taiyuan 030006, China | | | Ren Xiaona | China Institute for Radiation Protection, Taiyuan 030006, China | rxn-001@163.com |
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| Abstract:: |
| Objective To overcome the disadvantages of bismuth removal by bismuth sulfide precipitation method recommended by existing analytical standards and improve the quality of analytical result. Methods Based on 201×7 anion exchange resin, the experimental process of bismuth removal was designed, and verified by using spiked samples and IAEA test samples. Results Bismuth was removed by anion exchange resin. In the removal experiments of strontium, yttrium and bismuth, the chemical recovery rate of strontium and yttrium could reach (98.6 ±0.8)% and (98.5 ±0.7)%, respectively, with no Bi2S3 precipitation found. The relative standard deviation between analytical result and theoretical values was -2.97% to 5.94%, better than 3.96%-17.8% by the standard bismuth removal method. Through validation using IAEA test samples, the relative standard deviation between the reported value and the target value for 90Sr was between 3.40%-7.09%, and all the results were acceptable. Conclusions Bismuth could be quantitatively removed using anion exchange resin without adsorption of strontium and yttrium. In addition, the bismuth removal solution system of anion exchange resin was the same as the elution system in 90Sr analysis, and the purpose of rapid bismuth removal could be achieved without conversion system. Compared with the current standard analytical method, it was feasible and better to quantitatively remove bismuth based on anion exchange resin, which could meet the needs of routine analysis of 90Sr. |
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