JAEA
  • help
  • PC | SP
  • JP | EN
          
Refine your search：     
Report No.
 - 
Clear All
Search Results: Records 1-6 displayed on this page of 6
  • 1

Presentation/Publication Type

Initialising ...

Refine

Journal/Book Title

Initialising ...

Meeting title

Initialising ...

First Author

Initialising ...

Keyword

Initialising ...

Language

Initialising ...

Publication Year

Initialising ...

Held year of conference

Initialising ...

Save select records

Journal Articles

Development of HCl-free solid-phase extraction combined with ICP-MS/MS for rapid assessment of difficult-to-measure radionuclides, 3; Measurement of $$^{79}$$Se concentration in concrete rubble

Banjarnahor, I. M.; Do, V. K.; Furuse, Takahiro; Ota, Yuki; Tanaka, Kosuke

Journal of Radioanalytical and Nuclear Chemistry, 10 Pages, 2025/00

https://doi.org/10.1007/s10967-025-10143-w
 Times Cited Count：0 Percentile：73.02(Chemistry, Analytical)

Oral presentation

Development of analytical method for interference-free determination of $$^{79}$$Se in concrete by ICP-MS/MS

Banjarnahor, I. M.; Do, V. K.; Motoki, Yoshiaki*; Ota, Yuki; Iwahashi, Hiroyuki; Kurosawa, Kiyoko*; Furuse, Takahiro

no journal, , 

Pure beta-emitting $$^{79}$$Se is one of the long-lived fission products that might release to the environment due to the nuclear accident at Fukushima Daiichi Nuclear Power Plant (FDNPP). A reliable and simple determination method of the radionuclide is important for proceeding the disposal of the wastes obtained from the decommissioning of FDNPP. We developed a new analytical procedure for the measurement of $$^{79}$$Se by inductively coupled plasma triple quadrupole mass spectrometry (ICP-MS/MS). All interferences that potentially interfere in the measurement of $$^{79}$$Se could be effectively removed by the chemical separation pretreatment and ICP-MS/MS. The method is tested with inactive concrete to verify the interference removal efficiency. Also, the analytical figures of merit such as detection capability etc. are reported.

Oral presentation

Analysis of fuel debris obtained from inside the pedestal of Unit 2 of Fukushima Daiichi Nuclear Power Station, 9; ICP-AES and alpha- and gamma-ray analysis of the solution obtained by alkaline fusion dissolution

Nakamura, Satoshi; Banjarnahor, I. M.; Ban, Yasutoshi; Kitatsuji, Yoshihiro; Takano, Masahide; Kitagaki, Toru; Mizokami, Masato*; Mizokami, Shinya*

no journal, , 

A chemical analysis was conducted on fuel debris sample obtained from the first trial retrieval inside the pedestal of Unit 2 of Fukushima Daiichi Nuclear Power Station, which was received in the Nuclear Science Research Institute, JAEA. The debris sample was decomposed and dissolved via alkaline fusion with sodium peroxide after pulverization and homogenization. Elemental composition and nuclide composition (gamma-ray nuclides, Am, and Cm) of fuel debris sample were analyzed by ICP-AES and alpha- and gamma-ray spectrometers.

Oral presentation

Interference-free determination for long-lived radionuclides based on solid-phase extraction combined with ICP-MS/MS

Do, V. K.; Ota, Yuki; Banjarnahor, I. M.; Aita, Rena; Murakami, Erina; Homma, Shunta; Iwahashi, Hiroyuki; Furuse, Takahiro

no journal, , 

The Okuma Analysis and Research Center has been established to analyze the decommissioning wastes collected from Fukushima Daiichi Nuclear Power Plant (1F). Radioactive material analysis and research facility 1 (Laboratory-1) where analyses of the low and intermediate-level wastes are preliminarily tested has started the operation from October 2022. Among the selected radionuclides to be analyzed, long-lived radionuclides can be measured by inductively coupled plasma mass spectrometry, which offers more rapid measurement and higher sensitivity compared to radiometry. The modern configuration of tandem triple quadrupoles (called ICP-QQQ-MS or ICP-MS/MS) enables the effective control of interferences that can simplify the chemical separation process and thus reduces the total time of analysis. The presentation summarizes our recent advances in research and development of analytical methods for the selected long-lived radionuclides such as $$^{93}$$Zr, $$^{93}$$Mo, $$^{107}$$Pd, $$^{126}$$Sn, and $$^{79}$$Se by ICP-MS/MS, aiming at applications to the measurement of samples collected in the vicinity of 1F. The analytical method development and recently obtained results are discussed in detail.

Oral presentation

Development of HCl-free analytical methods for $$^{79}$$Se in concrete rubble by ICP-MS/MS

Do, V. K.; Banjarnahor, I. M.; Ota, Yuki; Tanaka, Yasuyuki; Furuse, Takahiro; Tanaka, Kosuke

no journal, , 

The presentation summarizes the results of the development of analytical method for $$^{79}$$Se in concrete rubble using inductively coupled plasma triple quadrupole mass spectrometry (ICP-MS/MS). $$^{79}$$Se has been conventionally measured by a liquid scintillation counter (LSC). However, LSC measurement is time-consuming and susceptible to the radioactive interferences from highly radioactive nuclides ($$^{90}$$Sr, $$^{137}$$Cs, etc.) coexisting in the samples. In this regard, ICP-MS/MS is a powerful technique, which can effectively eliminate the interferences. In this study, we have developed an HCl-free chemical separation to recover Se and remove the $$^{79}$$Br isobar. Chemical recovery for Se was around 90%. Also, we investigated the best conditions to measure $$^{79}$$Se by ICP-MS/MS. The method detection limit of 0.1 Bq/g was achieved indicating that the developed method meets the requirements for the measurement of $$^{79}$$Se in the radioactive rubble collected at the Fukushima Daiichi Nuclear Power Plant.

Oral presentation

Development of HCl-free and rapid analytical methods for radioactive waste from FDNPS

Tanaka, Yasuyuki; Ota, Yuki; Kodaka, Noriyasu; Kikuchi, Riku; Banjarnahor, I. M.; Do, V. K.; Furuse, Takahiro; Tanaka, Kosuke; Watanabe, Masahisa

no journal, , 

no abstracts in English

6 (Records 1-6 displayed on this page)
  • 1