Development of a simple method for oxygen isotope analysis on microgram quantities of biogenic opal

2011 Fiscal Year Final Research Report

• Project/Area Number: 21654072
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Single-year Grants
• Research Field: Stratigraphy/Paleontology
• Research Institution: Japan Agency for Marine-Earth Science and Technology (2009, 2011); The University of Tokyo (2010)
• Principal Investigator: IJIRI Akira 独立行政法人海洋研究開発機構, 高知コア研究所, 研究員 (70374212)
• Project Period (FY): 2009 – 2011
• Keywords: 珪質プランクトン / 酸素同位体比 / 極微小量

Research Abstract

We developed a rapid and simple method for oxygen isotope analysis on microgram quantities of biogenic opal. The sample size of opal was reduced to<1/10 compared to conventional methods without reducing the precision of the oxygen isotope ratio. We succeeded in the oxygen isotope analysis on monospecific radioralian skeletons by using our new method, and applied the method to analysis for the samples retrieved during Integrated Ocean Drilling Program(IODP) Expeditions.

Research Products

• [Journal Article] Inter-laboratory comparison of oxygen isotope compositions from biogenic silica. (2011)
  • Author(s): Chapligin, B., Leng, M. J., Webb, E., Alexandre, A., Dodd, J. P., Ijiri, A., Lucke, A., Shemesh, A., Abelmann, A., Herzschuh, U., Longstaffe, F. J., Meyer, H., Moschen, R., Okazaki, Y., Rees, N. H., Sharp, Z. D., Sloane, H. J., Sonzogni, C., Swann, G. E. A., Sylvestre, F., Tyler, J. J., Yam, R.
  • Journal Title: Geochimica et Cosmochimica Acta Volume: 75 Pages: 7242-7256
  • Peer Reviewed
• [Presentation] A Holocene diatom oxygen isotopes record from the Indian sector of the Southern Ocean (2011)
  • Author(s): Yamane, M., Okazaki, Y., Ijiri, A., Ikehara, M., Yokoyama, Y.
  • Organizer: INQUA XVIII Congress
  • Place of Presentation: Bern, BERNEXPO
  • Year and Date: 2011-07-22
• [Presentation] A simple method for oxygen isotope analysis on microgram quantities of biogenic opal. (2010)
  • Author(s): Ijiri, A., Okazaki, Y., Yamane, M., Sakamoto, T., and Harada. N.
  • Organizer: 10th International Conference on Paleoceanography
  • Place of Presentation: San Diego, Scripps Institution of Oceanography
  • Year and Date: 2010-09-02
• [Presentation] 微小量生物源オパールの酸素同位体比測定法の開発～新しい珪質プランクトン古海洋指標の開拓をめざして (2010)
  • Author(s): 井尻暁,岡崎裕典,山根雅子,坂本竜彦,原田尚美
  • Organizer: 日本地球惑星科学連合2010年大会
  • Place of Presentation: 幕張メッセ
  • Year and Date: 2010-05-25