2021 Annual Meeting

Presentation information

Oral presentation

V. Nuclear Fuel Cycle and Nuclear Materials » 504-2 Nuclear Chemistry, Radiochemistry, Analytical Chemistry, Chemistry of Actinide Elements

[2H02-04] Analytical Technique 1

Thu. Mar 18, 2021 10:10 AM - 11:05 AM Room H (Zoom room 8)

Chair: Shuichi Hasegawa (UTokyo)

10:10 AM - 10:25 AM

[2H02] Development of chemical separation of Sn from concrete matrices using TEVA® resin

*Van-Khoai Do1,2, Takahiro Furuse1,2, Yuki Ohta1,2, Yuichi Sano1,2, Hiroyuki Iwahashi1,2, Shunta Homma1,2, Yurina Ichijo1,2, Kiyoko Kurosawa1,2, Tsubasa Endo1,2, Yoshiaki Motoki1,2 (1. JAEA, 2. IRID)

Keywords:Radiochemical analysis, 126Sn, Solid phase extraction, TEVA® resin

Quantification of 126Sn in concrete rubble by inductively coupled plasma mass spectrometry requires separation of the nuclide from an isobar (126Te) and sample matrices. In the study, we developed an HCl-free procedure for recovering Sn from concretes. At first, Sn is coprecipitated with iron hydroxide. Or the solution sample is evaporated to dryness to remove nitrate. The obtained precipitate/or residue is then dissolved in hydrofluoric acid (HF) before Sn is retained on a commercial TEVA® resin column in the media of 0.5 M HF. Finally, Sn is eluted by 2M nitric acid. With the developed separation process, Sn was completely recovered from the synthetic concrete solution sample. The method development and characterization are discussed in detail in the presentation.