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Kazama, Hiroyuki; Konashi, Kenji*; Suzuki, Tatsuya*; Koyama, Shinichi; Maeda, Koji; Sekio, Yoshihiro; Onishi, Takashi; Abe, Chikage*; Shikamori, Yasuyuki*; Nagai, Yasuyoshi*
Journal of Analytical Atomic Spectrometry, 38(8), p.1676 - 1681, 2023/07
Times Cited Count:1 Percentile:0.02(Chemistry, Analytical)Kazama, Hiroyuki; Sekio, Yoshihiro; Maeda, Koji; Konashi, Kenji*; Abe, Chikage*; Nagai, Yasuyoshi*; Suzuki, Tatsuya*
no journal, ,
Inductively coupled plasma mass spectrometry with triple quadrupoles (ICP-MS/MS) is one of the promising techniques for rapid and highly sensitive wet analysis of fuel debris in Fukushima Daiichi Nuclear Power Plant. The collision/reaction cell technology implanted in ICP-MS/MS is available option to eliminate isobaric interferences, being expected to simplify the pretreatment of fuel debris analysis. In this study, ICP-MS/MS measurements of U and Th with collision/reaction gases were performed. On the basis of their gas reactivity, analytical methods for U will be discussed.
Kazama, Hiroyuki; Sekio, Yoshihiro; Maeda, Koji; Koyama, Shinichi; Suzuki, Tatsuya*; Konashi, Kenji*; Abe, Chikage*; Nagai, Yasuyoshi*
no journal, ,
Triple-quadrupole inductively coupled plasma mass spectrometry (ICP-MS/MS) is attractive technique to perform rapid and accurate analysis of fuel debris in Fukushima Daiichi Nuclear Power Plant. The collision/reaction cell technology incorporated in ICP-MS/MS is an available option to eliminate isobaric interferences, being expected to simplify the pretreatment of fuel debris analysis. When fuel debris contains Am and Cm, the pretreatment involving Am/Cm separation is difficult due to similarly chemical behavior of these actinides. In this study, ICP-MS/MS measurements of Am and Cm injecting CO were carried out. From the obtained results, we suggest candidate conditions to discriminate the isobars of these actinides by use of the differences in their molecular ion formation tendency with variation of CO flow rate.
Kazama, Hiroyuki; Sekio, Yoshihiro; Maeda, Koji; Koyama, Shinichi; Suzuki, Tatsuya*; Konashi, Kenji*; Abe, Chikage*; Nagai, Yasuyoshi*
no journal, ,
Triple-quadrupole inductively coupled plasma mass spectrometry (ICP-MS/MS) is an attractive technique to perform rapid and highly sensitive analysis. The collision/reaction cell (CRC) technology incorporated in ICP-MS/MS is an available option to eliminate isobaric interference, being expected to discriminate actinide nuclides involved in fuel debris. Meanwhile, in order to discriminate against these isobaric interferences using ICP-MS/MS, it is necessary to understand actinide gas-phase reaction behavior associated with the injection of reaction gases into the CRC. In the present work, the actinide molecular ion formations correlating with the excitation energy from the ground state of actinide monoatomic cation to their reactive state (5f6d) were investigated by injection of reaction gases into CRC. The obtained correlations allow us to predict the reaction behaviors towards mutual discrimination of actinide series using ICP-MS/MS.
Kazama, Hiroyuki; Onishi, Takashi; Ikhwan, F. H.*; Suzuki, Tatsuya*; Sekio, Yoshihiro; Maeda, Koji; Koyama, Shinichi; Konashi, Kenji*; Idemitsu, Kazuya*; Nagai, Yasuyoshi*
no journal, ,
Understanding the properties of fuel debris is necessary for decommissioning the Fukushima Daiichi Nuclear Power Station (1F). An essential technique is the chemical analysis of actinide nuclides. In this study, actinide separation from FUGEN irradiated fuel solution was performed by extraction chromatography with tri-n-butyl phosphate impregnated resin (TBP resin). The irradiated fuel was used for a simulant of fuel debris in 1F. The chromatograph behavior revealed that uranium was separated from other actinides selectively.
Kazama, Hiroyuki; Konashi, Kenji*; Suzuki, Tatsuya*; Sekio, Yoshihiro; Maeda, Koji; Koyama, Shinichi; Abe, Chikage*; Nagai, Yasuyoshi*
no journal, ,
Ultratrace analysis technique is important to understand fuel debris in nuclear reactor core after sever accident. Ion-molecule reactions of actinides (Np, Am and Cm) in a reaction cell were measured by inductively coupled plasma mass spectrometry (ICP-MS/MS). These nuclides are included in fuel debris. A gas-phase ion-molecule reaction model has been developed to simulate the gas phase reactions in the reaction cell. The results of model simulation are good agreement with the flow rates dependences of experimental data accurately.
Kazama, Hiroyuki; Ma, Z.*; Suzuki, Tatsuya*; Konashi, Kenji*; Matsuo, Satoru*; Yoshida, Kenta*; Homma, Yoshiya*; Watanabe, Makoto*; Abe, Chikage*; Suzuki, Katsuya*
no journal, ,
no abstracts in English
Kazama, Hiroyuki
no journal, ,
no abstracts in English
Kazama, Hiroyuki
no journal, ,
no abstracts in English
Kazama, Hiroyuki; Toyota, Chihiro; Onishi, Takashi; Maeda, Koji
no journal, ,
We propose a rapid analysis method for Nd using triple quadrupole inductively coupled plasma mass spectrometry (ICP-MS/MS) for quick burn-up measurement. In the conventional method, Nd-148 is used as burn-up indicator, and some complicated separation processes are required to eliminate isobaric interference from Sm. In this study, we demonstrate the discrimination of Nd/Sm using ICP-MS/MS with reaction gas for rapid Nd analysis.