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Limnology

, Volume 12, Issue 3, pp 261–266 | Cite as

New organic reference materials for carbon- and nitrogen-stable isotope ratio measurements provided by Center for Ecological Research, Kyoto University, and Institute of Biogeosciences, Japan Agency for Marine-Earth Science and Technology

  • Ichiro TayasuEmail author
  • Riyo Hirasawa
  • Nanako O. Ogawa
  • Naohiko Ohkouchi
  • Keita Yamada
Note

Abstract

We determined both carbon and nitrogen isotope ratios of ten organic reference materials (CERKU-01 to CERKU-10) in the Center for Ecological Research (CER), Kyoto University, and three organic reference materials (BG-A, BG-P, and BG-T) in the Institute of Biogeosciences (BioGeos), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), using an internationally recommended calibration method of two-point anchoring. The reference materials cover δ13CVPDB range of −34.92 to −9.45‰ and δ15NAir range of −5.22 to 22.71‰ and can be used to measure isotope ratios of naturally occurring substances.

Keywords

Stable isotope Carbon Nitrogen Calibration Reference materials 

Notes

Acknowledgments

We thank Dr. Yoshito Chikaraishi for discussion. This study was conducted using Joint Usage/Research Grant of Center for Ecological Research, Kyoto University, and partly supported by Grants-in-Aid from the Japan Society for the Promotion of Science (No. 22370012 to IT and No. 2244071 to NO).

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Copyright information

© The Japanese Society of Limnology 2011

Authors and Affiliations

  • Ichiro Tayasu
    • 1
    Email author
  • Riyo Hirasawa
    • 1
  • Nanako O. Ogawa
    • 2
  • Naohiko Ohkouchi
    • 2
  • Keita Yamada
    • 3
  1. 1.Center for Ecological Research, Kyoto UniversityOtsuJapan
  2. 2.Institute of Biogeosciences, JAMSTECYokosukaJapan
  3. 3.Department of Environmental Chemistry and EngineeringInterdisciplinary Graduate School of Science and Engineering, Tokyo Institute of TechnologyYokohamaJapan

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