Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Matsueda, Makoto; Kawakami, Tomohiko*; Teruyama, Yuko*; Terashima, Motoki; Iijima, Kazuki; Furukawa, Makoto*; Takagai, Yoshitaka*
no journal, ,
Actinides have a significant radiotoxicity risk of internal exposure to human body due to their emission of high energy alpha particle. An analysis of the actinides is important for safe management of nuclear power plants and radioactive wastes. A traditional method using alpha spectrometry needs a time-consuming and complicated multi-step pretreatment process. Inductively coupled plasma-mass spectrometry (ICP-MS) can potentially realize rapid and simple analytical method by reducing the pretreatment process through combining various automatic chemical separation systems. Such a combination including a hyphenation of chemical instrument and pretreatment system can also be achieved to improve applicability of ICP-MS for simultaneous determination of actinides. In this study, we developed an automatic analytical system of online solid-phase extraction (SPE)-ICP-MS equipped with multi-separation steps of SPE for simultaneous determination of actinides (Th, U, Pu, and Am).
Matsueda, Makoto; Kawakami, Tomohiko*; Teruyama, Yuko*; Takagai, Yoshitaka*
no journal, ,
Radiation analysis of transuranium elements and beta-nuclides requires a time-consuming pre-treatment process, which increases the efforts of the analytical process and the exposure risk in case of high-dose samples. Inductively coupled plasma mass spectrometry (ICP-MS) can measure them quickly by separating interferences via reaction with various gases in the collision reaction cell (CRC). Among their gas-phase reaction, based on oxidation have been widely used for the analysis of radioisotopes. In this study, we investigated oxidation reaction with ozone that is a highly reactive oxidising gas for transuranium elements and beta-nuclides to develop an analytical method for radioisotopes.
Matsueda, Makoto; Kawakami, Tomohiko*; Teruyama, Yuko*; Terashima, Motoki; Iijima, Kazuki; Furukawa, Makoto*; Takagai, Yoshitaka*
no journal, ,
Determination of actinides (e.g., Th, U, Np, Pu, Am, Cm) in contaminated water and nuclear waste is important for decommissioning the Fukushima Daiichi Nuclear Power Station. However, traditional radiochemical analysis needs a time-consuming process and large effort. ICP-MS has the potential of rapid determination by simultaneous detection of actinides, while many isobaric interferences prevent the quantification. In this study, we developed an automatic analysis method using ICP-MS incorporating cascade separation steps (solid phase separation and gas phase reaction in the dynamic reaction cell) to simultaneously determine actinides.
Matsueda, Makoto; Yanagisawa, Kayo; Kawakami, Tomohiko*; Teruyama, Yuko*; Toyoda, Yamato*; Otsuki, Hibiki*; Takagai, Yoshitaka*
no journal, ,
Inductively coupled plasma mass spectrometry (ICP-MS) can measure actinides simultaneously, but isobaric interferences between actinides inhibit quantification. We combined solid-phase extraction (SPE) using DGA resin (Eichrom Technologies) and ICP-MS with oxygen reaction in a collision and reaction cell (CRC) to simultaneously measure Th, U, Pu, Am and Cm isotopes. The method is automated as an on-line SPE-ICP-MS/MS consisting of flow injection with SPE column and ICP-MS/MS, but the quantification includes a risk of variability due to the sample matrix. In this study, various sample types were applied and the impact of the sample matrix on the analysis system was assessed.
Usami, Shin; Kageyama, Takeshi*; Morohashi, Yuko; Kitano, Akihiro; Kishimoto, Yasufumi*; Teruyama, Hidehiko; Nishi, Hiroshi
no journal, ,
no abstracts in English