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Simultaneous determination of actinides and 90Sr in large-size soil and sediment samples.
Luo, Maoyi; Liu, Daqian; Yang, Yao; Dai, Xiongxin; Wu, Yang; Shi, Keliang.
Affiliation
  • Luo M; China Institute for Radiation Protection, Taiyuan, China; Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China.
  • Liu D; China Institute for Radiation Protection, Taiyuan, China.
  • Yang Y; China Institute for Radiation Protection, Taiyuan, China.
  • Dai X; China Institute for Radiation Protection, Taiyuan, China; Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China. Electronic address: daixx@yahoo.com.
  • Wu Y; China Institute for Radiation Protection, Taiyuan, China.
  • Shi K; Radiochemistry Lab, School of Nuclear Science and Technology, Lanzhou University, Lanzhou, China.
J Environ Radioact ; 247: 106854, 2022 Jun.
Article in En | MEDLINE | ID: mdl-35276606
A simultaneous analytical method for sequential separation and determination of actinides and 90Sr in large-size environmental samples has been developed. In this method, successive co-precipitation steps were firstly conducted to remove matrix elements, then sequential column separation method was applied for simultaneous separation and purification of actinides and 90Sr/90Y. By using vacuum box technology, the total analytical time was minimized and batch processing allowed analyzing 12 samples in four days. The activity of 90Sr was obtained immediately by measuring its daughter radionuclide (90Y) with triple-to-double coincidence ratio (TDCR) Cherenkov counting, while the concentrations of Pu isotopes and 241Am could be measured by alpha spectrometry and mass spectrometric techniques. The overall recoveries of Pu, Am, Sr and Y were higher than 70% for the entire procedure, while the recovery ratios of Sr/Y were between 0.95 and 1.04 before chromatographic separation. The developed method was verified using 20 g and 50 g of environmental soil samples spiked with certified reference materials IAEA-384 or IAEA-385 and standard solution of 90Sr/90Y, and good agreement between the expected values and measured results has been achieved.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Radiation Monitoring / Actinoid Series Elements Language: En Journal: J Environ Radioact Journal subject: SAUDE AMBIENTAL Year: 2022 Type: Article Affiliation country: China

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Radiation Monitoring / Actinoid Series Elements Language: En Journal: J Environ Radioact Journal subject: SAUDE AMBIENTAL Year: 2022 Type: Article Affiliation country: China