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Small-scale radiocarbon dating of contaminated archaeological bones by purification of individual amino acids.

Research Project

Project/Area Number 18K12562
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 03060:Cultural assets study-related
Research InstitutionUniversity of Tsukuba (2019-2020)
The University of Tokyo (2018)

Principal Investigator

Itahashi Yu  筑波大学, 人文社会系, 助教 (80782672)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords放射性炭素年代測定 / 古人骨 / アミノ酸 / コラーゲン / HPLC / AMS / 考古遺跡出土骨 / 微量年代測定 / 遺跡資料からの汚染除去 / アミノ酸年代測定 / 遺跡出土骨 / 考古資料 / 液体クロマトグラフィー
Outline of Final Research Achievements

I have developed a method of compound-specific radiocarbon analysis (CSRA) of individual amino acids isolated from bone collagen in ancient human and animal samples.
To obtain radiocarbon dates of single compound, I improved a separating method of indigenous amino acids, specifically for hydroxy-proline. I optimized the separation/fraction collection of individual amino acids using high-performance liquid chromatography and a further purified step of the isolated amino acids prior to the small-scale radiocarbon measurement by accelerator mass spectrometry.
By purification after LC separation, the dating hydroxy-proline in the ancient collagens would provide more accurate ages of archaeological bones.

Academic Significance and Societal Importance of the Research Achievements

遺跡出土骨の放射性炭素年代測定では一般的にコラーゲンが利用されています。しかし、通常の前処理では汚染が残り、得られる年代値が想定される年代と大きくかけ離れている場合が多々ありました。本研究で汚染の原因と指標となるマーカーと検討し、汚染の一部は土壌から植物由来の炭素がコラーゲンに沈着していること、コラーゲンの炭素と窒素の比率が汚染の指標となることが確かめられました。
そこで本研究では、コラーゲン特有なため植物や微生物から混入する可能性の少ないアミノ酸だけを取り出して年代測定する方法を開発し、古人骨でより信頼性の高い放射性炭素年代測定を行う方法を検討しました。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (9 results)

All 2020 2019 2018 Other

All Int'l Joint Research (3 results) Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (3 results) (of which Invited: 1 results)

  • [Int'l Joint Research] ETH Zurich(スイス)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] ETH Zurich(スイス)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] 上海博物館(中国)

    • Related Report
      2018 Research-status Report
  • [Journal Article] 分析試料の正しい取り扱いかた 考古資料2020

    • Author(s)
      板橋 悠
    • Journal Title

      ぶんせき

      Volume: 548 Pages: 276-281

    • NAID

      120007132591

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A paleopathological approach to early human adaptation for wet-rice agriculture: The first case of Neolithic spinal tuberculosis at the Yangtze River Delta of China2019

    • Author(s)
      Okazaki Kenji、Takamuku Hirofumi、Yonemoto Shiori、Itahashi Yu、Gakuhari Takashi、Yoneda Minoru、Chen Jie
    • Journal Title

      International Journal of Paleopathology

      Volume: 24 Pages: 236-244

    • DOI

      10.1016/j.ijpp.2019.01.002

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Improved Method for Isolation and Purification of Underivatized Amino Acids for Radiocarbon Analysis2018

    • Author(s)
      Ishikawa Naoto F.、Itahashi Yu、Blattmann Thomas M.、Takano Yoshinori、Ogawa Nanako O.、Yamane Masako、Yokoyama Yusuke、Nagata Toshi、Yoneda Minoru、Haghipour Negar、Eglinton Timothy I.、Ohkouchi Naohiko
    • Journal Title

      Analytical Chemistry

      Volume: 90 Issue: 20 Pages: 12035-12041

    • DOI

      10.1021/acs.analchem.8b02693

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 【田口賞受賞講演】先史時代人骨の化合物レベル同位体分析により古代文明以前の社会を探る2020

    • Author(s)
      板橋 悠
    • Organizer
      日本有機地球化学会 若手・学生オンライン研究発表会2020
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] アミノ酸の微量グラファイト化による遺跡出土骨14C年代測定の高精度化2019

    • Author(s)
      板橋悠、大森貴之、尾嵜大真、山﨑孔平、大河内直彦、高野淑識、小川奈々子、石川尚人、米田穣
    • Organizer
      文化財科学会 第36回大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 東京大学総合研究博物館Compact-AMS の現状(2018 年度)2018

    • Author(s)
      尾嵜大真, 大森貴之, 板橋 悠, 山﨑孔平, 金澤礼雄, 上原加津維, 内田啓子, 関根紀子, 米田穣
    • Organizer
      第21回AMS シンポジウム
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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