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Takafumi Hirata2019 Volume 67 Issue 5 Pages 133
Published: October 01, 2019
Released on J-STAGE: October 15, 2019
JOURNAL FREE ACCESSDownload PDF (110K)
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Yu-ki Tanaka, Yasumitsu Ogra, Yuko Mikuni-Takagaki, Takafumi Hirata2019 Volume 67 Issue 5 Pages 134-141
Published: October 01, 2019
Released on J-STAGE: October 15, 2019
JOURNAL FREE ACCESSIn this paper, we describe both the analytical procedures of isotope ratio measurements and recent progresses in the stable isotope studies of biometals, including iron (Fe) and calcium (Ca). The mass spectrometer utilizing atmospheric pressure plasma ion source (ICP-MS) is the most versatile technique for the stable isotope analysis of heavy elements, and employed in most of the studies. The analytical procedures for minimizing the influence of both mass spectrometric and non-mass spectrometric interferences are quite important for the precise isotopic analysis of Fe and Ca. For Fe isotopes, changes in oxidation states generate large isotopic fractionation through the metabolism of Fe, and the isotope ratio data of Fe can provide information about long-term nutritional status of Fe. For Ca, isotopic ratios of Ca can become a powerful tracer for evaluating the metabolism of Ca in bones. The data presented here revealed that the stable isotope compositions of the biometals can be used as an effective marker for both diagnostics of various diseases related to metabolic disorder and evaluation of nutritional status of both wild and ancient animals.
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Shuji Yamashita, Toshihiro Suzuki, Takafumi Hirata2019 Volume 67 Issue 5 Pages 142-146
Published: October 01, 2019
Released on J-STAGE: October 15, 2019
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Toshihiro Suzuki, Shuji Yamashita, Yukihisa Yoshikuni, Takafumi Hirata2019 Volume 67 Issue 5 Pages 147-153
Published: October 01, 2019
Released on J-STAGE: October 15, 2019
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Yoshiki Makino, Hui Hsin Khoo, Yasuo Kuroki, Toshihiro Suzuki, Takafum ...2019 Volume 67 Issue 5 Pages 154-159
Published: October 01, 2019
Released on J-STAGE: October 15, 2019
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Takafumi Hirata, Yoshiki Makino, Masuto Fujimoto, Yasuo Kuroki, Kenshi ...2019 Volume 67 Issue 5 Pages 160-166
Published: October 01, 2019
Released on J-STAGE: October 15, 2019
JOURNAL FREE ACCESSDownload PDF (1406K)
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