Boron Isotopic Composition of Coral off Miyako Island, Okinawa

• NOMURA Masao

  Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology

• OI Takao

  Department of Chemistry, Sophia University

• TANGE Ryo

  Department of Chemistry, Sophia University

• KAN Hironobu

  Faculty of Education, Okayama University

• HOSOE Morikazu

  Department of Geoscience, National Defense Academy

• HORI Nobuyuki

  Faculty of Science, Tokyo Metropolitan University

Bibliographic Information

Other Title

• 沖縄県宮古島サンゴのホウ素同位体組成
• オキナワケン ミヤコジマ サンゴ ノ ホウソ ドウイタイ ソセイ

Abstract

Fossil coral Acropora sp. samples with ages of between 1570 and 3780 yBP collected from Miyako Island, Okinawa, were analyzed for their boron content and boron isotopic composition. The boron content was 37.7 ppm-51.5 ppm, nearly falling within the range of boron content previously reported. The boron isotopic composition expressed as σ¹¹B was+22.26%-+28.34%. These values lay within the range expected from the theoretical equilibrium constant (=1.0194) of the boron isotope exchange reaction between boric acid and borate anion in seawater. These results supported the claim that boron is mainly absorbed by corals in the form of borate anion.

Journal

• Bulletin of the Society of Sea Water Science, Japan

  Bulletin of the Society of Sea Water Science, Japan 53 (6), 471-475, 1999

  The Society of Sea Water Science, Japan

Details

• CRID: 1390282680429569920
• NII Article ID: 10008283929
• NII Book ID: AN0018645X
• DOI: 10.11457/swsj1965.53.471
• COI: 1:CAS:528:DyaK1MXnvVSnsbY%3D
• NDL BIB ID: 4928312
• ISSN: 03694550
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4928312
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • CiNii Articles
• Abstract License Flag: Disallowed