Sasaki Takahiro, Yamashita Ayano, Terui Norifumi, Hattori Toshiaki, Tanaka Shunitz
Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Kanazawa, Tobetsu, Ishikari, Hokkaido, 061-0293, Japan.
Graduate School of Engineering, Muroran Institute of Technology, Mizumoto, Muroran, Hokkaido, 050-0071, Japan.
Anal Sci. 2020;36(5):589-593. doi: 10.2116/analsci.19SBP12.
The removal efficiency of Cs from contaminated soil depends on its chemical species bound with the soil components. Therefore, in this study, we observed the elution behavior of Cs based on speciation analysis in a Cs removal experiment conducted on contaminated soils. The treatment method was optimized using simulated contaminated soil and applied to actual contaminated soil on a large scale as well. The elution rate of Cs was approximately 50% or more in both actual and simulated contaminated soil using the optimized treatment method. From the obtained results, a robust treatment method using an eluting reagent and a magnetic adsorbent with low energy costs is proposed. Additionally, the usefulness of speciation analysis in decontamination studies was confirmed.
铯从污染土壤中的去除效率取决于其与土壤成分结合的化学形态。因此，在本研究中，我们在对污染土壤进行的铯去除实验中，基于形态分析观察了铯的洗脱行为。使用模拟污染土壤对处理方法进行了优化，并将其大规模应用于实际污染土壤。采用优化处理方法后，实际和模拟污染土壤中铯的洗脱率均约为50%或更高。根据所得结果，提出了一种使用洗脱试剂和低能耗磁性吸附剂的稳健处理方法。此外，证实了形态分析在去污研究中的实用性。
