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Journal Articles

Rapid analysis of $$^{90}$$Sr in cattle bone and tooth samples by inductively coupled plasma mass spectrometry

Koarai, Kazuma; Matsueda, Makoto; Aoki, Jo; Yanagisawa, Kayo*; Terashima, Motoki; Fujiwara, Kenso; Kino, Yasushi*; Oka, Toshitaka; Takahashi, Atsushi*; Suzuki, Toshihiko*; et al.

Journal of Analytical Atomic Spectrometry, 36(8), p.1678 - 1682, 2021/08

 Times Cited Count:0 Percentile:0.02(Chemistry, Analytical)

Rapid analysis of $$^{90}$$Sr in bone and tooth samples of cattle were achieved by an inductively coupled plasma mass spectrometry (ICP-MS) coupled with mass shift and solid phase extraction techniques. Limit of detection (LOD) in the ICP-MS measurement of 0.1 g samples was lower than that of the radioactivity measurement. Analytical time of the ICP-MS method was reduced from 20 days to 11 hours, compared with the radiometric method. Therefore, the ICP-MS method can be rapid and useful procedure of $$^{90}$$Sr in small bone and tooth samples derived from terrestrial animals.

Journal Articles

Online solid-phase extraction-inductively coupled plasma-quadrupole mass spectrometry with oxygen dynamic reaction for quantification of technetium-99

Matsueda, Makoto; Yanagisawa, Kayo*; Koarai, Kazuma; Terashima, Motoki; Fujiwara, Kenso; Abe, Hironobu; Kitamura, Akihiro; Takagai, Yoshitaka*

ACS Omega (Internet), 6(29), p.19281 - 19290, 2021/07

 Times Cited Count:0 Percentile:0(Chemistry, Multidisciplinary)

Online solid-phase extraction-inductively coupled plasma-quadrupole mass spectrometry with oxygen dynamic reaction cell (online SPE-ICP-MS-DRC) was shown to be a thorough automatic analytical system, circumventing the need for human handling. At three stepwise separations (SPE-DRC-Q mass filters), we showed that interference materials allowed the coexistence of abundance ratios of 1.5$$times$$10$$^{-13}$$ for $$^{99}$$Tc/Mo. Using this optimized system, a detection limit of $$^{99}$$Tc was 9.3 pg/L (5.9 mBq/L) for a 50 mL injection and sequential measurements were undertaken at a cycle of 24 min/sample.

Journal Articles

Applicability of Sr resin for ICP-MS measurement of $$^{90}$$Sr in hard tissue samples

Koarai, Kazuma; Matsueda, Makoto; Aoki, Jo; Yanagisawa, Kayo*; Fujiwara, Kenso; Terashima, Motoki; Kitamura, Akihiro; Abe, Hironobu

KEK Proceedings 2020-4, p.180 - 185, 2020/11

Strontium-90 and $$^{90}$$Y, its daughter nuclide, adverse effects on the bone marrow. Monitoring of $$^{90}$$Sr in the bones have been required after the Fukushima-Daiichi Nuclear Power Plant accident. However, conventional radioactivity measurement method for $$^{90}$$Sr requires a complicated separation of $$^{90}$$Y and a time-consuming measurement. ICP-MS system has been applied to $$^{90}$$Sr concentration survey of water, soil, and edible part of fish. We applied the ICP-MS system for the bones for the first time. In this study, reference bone (JSAC 0785 fish bone) was used as measurement samples. Sample preparation of the bone was performed using a microwave digestion instrument. After sample preparation, $$^{90}$$Sr was determined using ICP-MS system with cascade separation steps based on on-line column separation and oxygen reaction. Strontium-90 in the bones was successfully separated from Ca, Ba, Y, Zr, Fe, Se, and Ge, which interfered in ICP-MS measurement, in the separation steps.

Journal Articles

Development of online dilution system for quantification of $$^{90}$$Sr using automatic solid-phase extraction inductively coupled plasma mass spectrometry

Yanagisawa, Kayo*; Matsueda, Makoto; Furukawa, Makoto*; Takagai, Yoshitaka*

Analytical Sciences, 36(9), p.1131 - 1135, 2020/09

 Times Cited Count:2 Percentile:41.67(Chemistry, Analytical)

In this paper, we propose an online water infusion system for rapid quantification of radioactive strontium-90 ($$^{90}$$Sr) with inductively coupled plasma mass spectrometry coupled solid-phase extraction and O$$_{2}$$ dynamic reaction (cascade ICP-MS). The proposed system automatically provides a higher dilution ratio, which is at most 3.3 times the ratio obtained by the previous method, without increasing the analysis time (within 15 min). A detection limit of 2.7 Bq/kg wet (0.54 pg/kg wet) was achieved. The recovery test results were consistent with two different spiked values.

Journal Articles

Rapid determination of Sr-90 in environmental matrices by SPE-ICP-MS for emergency monitoring

Fujiwara, Kenso; Yanagisawa, Kayo*; Iijima, Kazuki

Environmental Radiochemical Analysis VI, p.89 - 96, 2019/09

Since Strontium-90 (Sr-90) is one of the high yield and hazardous fission products, accurate and low-level detection of Sr-90 is essential for environmental samples. Especially, in case of nuclear power plant accidents, rapid and precise assessment of Sr-90 for environmental monitoring and health physics is required. In order to evaluate the migration of radionuclides in the environment, not only Sr-90 in water but also those in soil and biological samples should be measured. A new method for rapid quantification of Sr-90 by online solid phase extraction coupled with inductively coupled plasma mass spectrometry (SPE-ICP-MS) has been developed. In this method, it is unavoidable to eliminate the interference by polyatomic ion (e.g., ArCa, Ca$$_{2}$$) induced by isotopes and matrices in fishes and soil. In this study, SPE-ICP-MS method was applied to the measurement of Sr-90 in fishes, and the influence of the Sr isotopes and coexisting ions such as Ca was evaluated.

Journal Articles

Temperature performance of portable radiation survey instruments used for environmental monitoring and clean-up activities in Fukushima

Saegusa, Jun; Yanagisawa, Kayo; Hasumi, Atsushi; Shimizu, Takenori; Uchida, Yoshiaki*

Radiation Physics and Chemistry, 137, p.210 - 215, 2017/08

 Times Cited Count:1 Percentile:15.39(Chemistry, Physical)

Following the Fukushima Daiichi Nuclear Power Plant (NPP) accident, large-scale radiation monitoring and environmental clean-up activities have been conducted throughout the Fukushima region. Outside air temperatures there reach 40$$^{circ}$$C in summer and -20$$^{circ}$$C in winter, which are beyond the quoted range of many radiation survey instruments. For the purpose, temperature performances of four types of portable Japanese survey instruments which are widely used in Fukushima were experimentally investigated with a temperature-controlled chamber.

Oral presentation

Outline of Sasakino Analytical Laboratory, Fukushima Environmental Safety Center of JAEA

Saegusa, Jun; Yanagisawa, Kayo; Yamaguchi, Toshio; Manabe, Sachi; Yoda, Tomoyuki; Maeda, Satoshi; Utsumi, Azusa; Shibamichi, Masaru; Ejiri, Akira; Kurita, Yoshiyuki; et al.

no journal, , 

no abstracts in English

Oral presentation

Rapid analytical method for OBT in marine products

Kuwata, Haruka*; Hagiwara, Hiroki; Yanagisawa, Kayo; Manabe, Sachi*; Takeishi, Minoru; Watanabe, Hitoshi; Uezu, Yasuhiro

no journal, , 

no abstracts in English

Oral presentation

Study on the analysis method for radioactive strontium in environmental samples by ICP-MS with online solid phase extraction

Yanagisawa, Kayo*; Kuwata, Haruka*; Hagiwara, Hiroki; Uezu, Yasuhiro

no journal, , 

no abstracts in English

Oral presentation

Rapid analytical method for OBT in marine products

Kuwata, Haruka*; Hagiwara, Hiroki; Yanagisawa, Kayo*; Manabe, Sachi*; Takeishi, Minoru; Watanabe, Hitoshi; Uezu, Yasuhiro

no journal, , 

Oral presentation

Application of the rapid analytical method for $$^{90}$$Sr to environmental samples with online solid phase extraction/ICP-MS

Hagiwara, Hiroki; Yanagisawa, Kayo*; Kuwata, Haruka*; Tanabe, Tsutomu; Uezu, Yasuhiro

no journal, , 

no abstracts in English

Oral presentation

Measurement of Sr-90 in high matrix samples by ICP-MS

Fujiwara, Kenso; Yanagisawa, Kayo*; Iijima, Kazuki

no journal, , 

Since Sr-90 is one of the high yield and hazardous fission products, accurate and low-level detection of Sr-90 is essential for environmental samples. Especially, in case of nuclear power plant accidents, rapid and precise assessment of Sr-90 for environmental monitoring and health physics is required. In order to evaluate the migration of radionuclides in the environment, not only Sr-90 in water but also those in soil and biological samples should be measured. A new method for rapid quantification of Sr-90 by online solid phase extraction coupled with inductively coupled plasma mass spectrometry (SPE-ICP-MS) has been developed. In this method, it is unavoidable to eliminate the interference by polyatomic ion (e.g., ArCa, Ca$$_{2}$$) induced by isotopes and matrices in fishes and soil. In this study, SPE-ICP-MS method was applied to the measurement of Sr-90 in fishes, and the influence of the Sr isotopes and coexisting ions such as Ca was evaluated.

Oral presentation

Mass spectrometry analysis for radioactive strontium in fishes

Matsueda, Makoto; Yanagisawa, Kayo*; Fujiwara, Kenso; Kitamura, Akihiro

no journal, , 

Strontium-90 ($$^{90}$$Sr) is one of the fission products and required a long time in the conventional radioactivity analysis (about a month). Therefore, we introduced the mass spectrometry analysis system combined inductively coupled plasma mass spectrometry (ICP-MS) and pretreatment units to determine $$^{90}$$Sr more quickly. This system was mainly used for low matrix samples such as rainwater, but this time we report the measurement results of $$^{90}$$Sr in fishes containing a lot of matrix (such as calcium).

Oral presentation

Trial of rapid measurement for $$^{90}$$Sr in animal bone by ICP-MS

Koarai, Kazuma; Matsueda, Makoto; Yanagisawa, Kayo*; Fujiwara, Kenso; Kitamura, Akihiro

no journal, , 

Strontium-90 and $$^{90}$$Y, its daughter nuclide, adverse effects on the bone marrow. Monitring of $$^{90}$$Sr have been required after the Fukushima-Daiichi Nuclear Power Plant. However, radioactivity measurement method requires a complicated separation and a time-consuming $$beta$$-ray measurement. ICP-MS system has been applied to $$^{90}$$Sr contamination survey of soil and water samples. We applied the ICP-MS system for the bones for the first time. In this study, reference bone was used as measurement samples. After sample preparation, $$^{90}$$Sr was determined using ICP-MS system with cascade separation steps based on on-line column separation and oxygen reaction. Strontium-90 in the bones was successfully separated from Ca, Ba, Y, Zr, Fe, and Ge, which interfered in ICP-MS measurement, in the separation steps. We found that the ICP-MS system could be applied to the rapid measurement of $$^{90}$$Sr in the bones.

Oral presentation

Examination of solid phase extraction of $$^{90}$$Sr in bones for ICP-MS analysis

Koarai, Kazuma; Matsueda, Makoto; Yanagisawa, Kayo*; Fujiwara, Kenso; Kitamura, Akihiro

no journal, , 

Strontium-90 ($$^{90}$$Sr) is one of an artificial radionuclide after the Fukushima-Daiichi Nuclear Power Plant accident. The ICP-MS system for $$^{90}$$Sr have been developed. The ICP-MS system could apply to measurement of $$^{90}$$Sr in soils and water. In this study, solid phase extraction method of $$^{90}$$Sr was optimized the ICP-MS system for bones. After MW digestion, fish bone was dissolved in 2.6 M nitric acid. Sr resin was used for solid phase extraction of $$^{90}$$Sr in a flow-injection system. Sr and interference elements were determined with ICP-MS. Chemical yield of Sr was over 90% in the solid phase extraction system. Interference elements were removed in the extraction. The extraction method could applied to the ICP-MS system for $$^{90}$$Sr. The method required only 30 minutes. The ICP-MS system would be rapid method for $$^{90}$$Sr measurement in bones.

Oral presentation

Evaluation and correction of Sr-90 value in bones quantified by online solid phase ICP-MS

Matsueda, Makoto; Koarai, Kazuma; Yanagisawa, Kayo*; Fujiwara, Kenso; Kitamura, Akihiro

no journal, , 

Sr-90 accumulates in hard tissues such as bones and teeth in the case of uptake into the human or animal bodies. Therefore, the analysis of these hard tissues from the viewpoint of exposure evaluation has required, but the conventional radioactivity analysis requires a period of about one month, it is difficult to process a large number of samples. From this thing, we tried to apply application of the online solid phase extraction/ICP-MS method which can be measured quickly compared to radioactivity analysis. This method has mainly been utilizing as the analysis of Sr-90 contained in the water samples such as rainwater, and it has already equipped the correction functions corresponding to the shift of recovery rate at the Sr resin and the sensitivity shift in ICP-MS. However, hard tissues contain a large amount of matrix. Therefore, we investigated whether the isobaric interference, stable Sr, and other high matrix influence to Sr-90 values and attempted to correct the values.

Oral presentation

System validation of ICP-MS measurement for determination of $$^{90}$$Sr in hard tissues of animals

Koarai, Kazuma; Matsueda, Makoto; Aoki, Jo; Yanagisawa, Kayo*; Fujiwara, Kenso; Terashima, Motoki; Kitamura, Akihiro; Abe, Hironobu

no journal, , 

Strontium-90 and $$^{90}$$Y, its daughter nuclide, adverse effects on the bone marrow. Monitoring of $$^{90}$$Sr in the bones have been required after the Fukushima-Daiichi Nuclear Power Plant accident. However, conventional radioactivity measurement method for $$^{90}$$Sr requires a complicated separation of $$^{90}$$Y and a time-consuming measurement. ICP-MS system has been applied to $$^{90}$$Sr concentration survey of water, soil, and edible part of fish. We applied the ICP-MS system for the bones. We determined $$^{90}$$Sr in the hard tissues of animals that collected in the Fukushima prefecture. Limit of detection in the measurement was 19 Bq/kg.

Oral presentation

Strontium-90 measurement in trace amount of hard tissues for distribution analysis

Koarai, Kazuma; Matsueda, Makoto; Aoki, Jo; Yanagisawa, Kayo*; Fujiwara, Kenso; Terashima, Motoki; Kino, Yasushi*; Oka, Toshitaka; Okutsu, Kenichi*; Yamashita, Takuma*; et al.

no journal, , 

We demonstrated a method of $$^{90}$$Sr measurement in small pieces of hard tissues with radioactivity measurement or ICP-MS measurement. Interference elements of the measurements were removed by chemical separation. We could determine $$^{90}$$Sr in 0.1 g of hard tissues by radioactivity measurement method and ICP-MS method. Limit of detection of the ICP-MS method was lower than that of the radioactivity measurement. The ICP-MS method is adequate method for distribution analysis of $$^{90}$$Sr in the hard tissues.

Oral presentation

Analytical methods with mass spectrometry for technetium-99

Matsueda, Makoto; Yanagisawa, Kayo*; Koarai, Kazuma; Terashima, Motoki; Fujiwara, Kenso; Abe, Hironobu; Kitamura, Akihiro; Takagai, Yoshitaka*

no journal, , 

no abstracts in English

19 (Records 1-19 displayed on this page)
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