J-GLOBAL ID:200904094574843344  Research Project code:0450021939 Update date:Nov. 08, 2004

Study on the method of analyzing extremely minute amount of radioactive carbon in macro organic molecules of ocean sample through AMS

Study period:2002 - 2004
Research overview:
Objective of this study is to develop the method of analyzing molecular level of radioactive carbon in such insoluble compounds in organic solvents, as macro organic molecules (e.g. lignin, argitan) that are distinguished from bio markers actively studied in organic geochemistry, but, available mostly in sedentary organic compounds as hardly degradable fractions and studied less actively. By applying this method on oceanic sedentary samples, new findings are to be obtained on information about origin of these macro organic molecules and processes in the environment that were not fully explored. This study is oriented for developing AMS-PHPLC through developing newly preparative high performance liquid chromatography of automatic injection system of large amount of sample (Preparative-HPLC), realizing separation of concentrated large amount of target molecules and combining them with AMS. Also, high precision of the methodology to analyze radioactive carbon is to be developed, through establishing reaction conditions for graphite samples of less than several microgram of carbon amount, because amount of target molecules in sedentary samples is far less than required amount for conventional AMS measurement.
Project Organization (1):
  • (C013000000)
Research program: Grant-in-Aid for Scientific Research
Ministry with control over the research :
Ministry of Education, Culture, Sports, Science and Technology

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