Measurement of H-3, Cl-36, Na-22, Sr-85 and Ba-133 activities from synthetic groundwater

作者：Qian Lijuan^*; Helariutta Kerttuli; Ikonen Jussi; Siitari Kauppi Marja; Voutilainen Mikko; Koskinen Lasse

来源：Journal of Radioanalytical and Nuclear Chemistry, 2015, 306(1): 131-137.

DOI：10.1007/s10967-015-4068-7

• Gamma spectroscopy
• Liquid scintillation counting
• Chemical separation

Radioactive elements (H-3, Cl-36, Na-22, Sr-85 and Ba-133) was used and measured in one of the in-situ experiments. The separation scheme had to be developed and optimized. Cl-36 was first extracted by silver chloride precipitation and then Sr-85 and Ba-133 were extracted by Sr/Ba carbonate precipitation after which activities of H-3 and Cl-36 were measured by liquid scintillation counting while activities of gamma emitters (Na-22, Sr-85 and Ba-133) were measured by gamma spectrometry from the initial solution. In the precipitation, the recoveries of Cl-36 and Sr-85 were 100 % while the recovery of Ba-133 was about 85 %. The detection limit of H-3 was 0.1 Bq g(-1) whereas the detection limit of Cl-36 was 0.05 Bq g(-1).

• 出版日期2015-10
• 单位兰州大学