Rapid isolation method for radioactive strontium using Empore™ Strontium Rad Disk
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A rapid and convenient chemical separation method for determining <sup>90</sup>Sr activity in aerosol samples using Empore™ Strontium Rad Disks was established. The method employ ed solid-phase extraction and ion-exchange chromatography, and achieved a Sr yield of > 80%. Furthermore, it completely eliminated <sup>210</sup>Pb, which interferes with <sup>90</sup>Sr radiation counting. Sample pretreatment, chemical separation and Cherenkov light measurement required approximately 4 h, 2.5 h, and 14 days, respectively, to achieve a detection limit of 0.004 Bq. Using the developed method, the <sup>90</sup>Sr concentration and <sup>90</sup>Sr/<sup>137</sup>Cs activity ratio in aerosol samples collected after the Fukushima nuclear accident were determined.
- Journal of Nuclear and Radiochemical Sciences
Journal of Nuclear and Radiochemical Sciences 16(0), 15-21, 2016
The Japan Society of Nuclear and Radiochemical Sciences