Sequential analyses of actinides in large-size soil and sediment samples with total sample dissolution

Publication date: Available online 6 February 2018
Source:Journal of Environmental Radioactivity
Author(s): Maoyi Luo, Shan Xing, Yonggang Yang, Lijuan Song, Yan Ma, Yadong Wang, Xiongxin Dai, Steffen Happel
There is a growing demand for the determination of actinides in soil and sediment samples for environmental monitoring and tracing, radiological protection, and nuclear forensic reasons. A total sample dissolution method based on lithium metaborate fusion, followed by sequential column chromatography separation, was developed for simultaneous determination of Pu, Am and Cm isotopes in large-size environmental samples by alpha spectrometry and mass spectrometric techniques. The overall recoveries of both Pu and Am for the entire procedure were higher than 70% for large-size soil samples. The method was validated using 20 g of soil samples spiked with known amounts of ²³⁹Pu and ²⁴¹Am as well as the certified reference materials IAEA-384 (Fangataufa Lagoon sediment) and IAEA-385 (Irish Sea sediment). All the measured results agreed very well with the expected values.



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