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分子レベル放射性炭素年代測定法と地球化学・環境試料への応用

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Title: 分子レベル放射性炭素年代測定法と地球化学・環境試料への応用
Other Titles: Compound specific radiocarbon analysis and its application to various geochemical and environmental samples
Authors: 松本, 公平1 Browse this author
河村, 公隆2 Browse this author
内田, 昌男3 Browse this author
柴田, 康行4 Browse this author
Authors(alt): MATSUMOTO, Kohei1
KAWAMURA, Kimitaka2
UCHIDA, Masao3
SHIBATA, Yasuyuki4
Keywords: 分子レベル放射性炭素年代測定
14C 年代
バイオマーカー
分取
キャピラリーガスクロマトグラフィー
加速器質量分析計
compound specific radiocarbon analysis (CSRA)
14C ages
biomarkers
preparative capillary gas chromatography (PCGC)
accelerator mass spectrometry(AMS)
Issue Date: 20-Dec-2002
Publisher: 日本地球化学会
Journal Title: 地球化学
Volume: 36
Issue: 4
Start Page: 149
End Page: 159
Abstract: 地球化学の新たな手法として,分子レベルの放射性炭素年代測定法(CSRA)が分取キャピラリーガスクロマトグラフィーや加速器質量計14C分析のためのマイクロスケールのグラファイトターゲット前処理技術の開発により可能になった.Eglintonetal.(1996)による報告以来,この新しい手法は,今日までに様々な地球化学的試料に応用された.我々は,この方法の原理と基本的な操作法,地球化学的試料への応用例をレビューする.さらに,これらの将来的な展望も議論する.これまでCSRA法は,海洋堆積物,石油,土壌,大気エアロゾル試料に応用されてきた.その結果,個々の有機分子の起源,堆積物中における微生物の用いた基質の種類等の議論,また大気エアロゾル中の長距離輸送経路の議論等,従来議論されてこなかった地球化学的プロセスがCSRA法によって明らかになってきた.こうした研究例は少ないながらも,CRSA法のバイオマーカーへの応用は,重要な地球化学的手法になると思われる.
A method of compound specific radiocarbon analysis (CSRA) has recently been developed. This method includes isolation of individual compounds by preparative capillary gas chromatography, preparation of graphite target for individual compounds, and 14C measurement by accelerator mass spectrometry. Since the first report by Eglinton et al. (1976), this CSRA method has been applied to various geochemical and environmental samples. In this paper, we review the principle and procedures of the new technique and the recent results obtained by the application of CSRA method to geochemical samples. We also discuss the significance and future perspectives of CSRA method in the fields of geochemical and environmental studies. So far, the CSRA method has been applied to marine sediments, oils, soils and atmospheric aerosols. Based on the CSRA studies, different geochemical processes have been discussed including an origin of individual organic compounds, the way microbes use the substrates in sediments, and a long-range atmospheric transport of aged organic compounds from source regions. Although the reports associated with CSRA are still very limited, we suggest that this method would become more important in the future geochemical and environmental studies.
Type: article (author version)
URI: http://hdl.handle.net/2115/26211
Appears in Collections:低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 河村 公隆

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