Methyl and ethyl chloroformate derivatizations for compound-specific stable isotope analysis (CSIA) of fatty acids(<SPECIAL ISSUE>Advances in molecular and stable isotope studies among the organic geochemical and related communities (Part II))
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概要
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We evaluated methyl (MCF) and ethyl chloroformate (ECF) derivatizations as rapid and simple esterification techniques for the compound-specific stable isotope analysis (CSIA) of fatty acids. Although the fatty acids were esterified very rapidly (within 5min) at room temperature in both derivatizations, the yield of derivatives depended strongly on the chemical constituent and pH of the derivative reagent and the carbon-chain length of fatty acids. In this study, quantitative esterification was observed during ethyl esterification with ECF:ethanol:pyridine (2:60:5, v:v). In this esterification process, the accuracy of the carbon isotope (δ^<13>C) measurements was always better than 0.3‰.
- 2011-09-30
著者
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Korenaga Takashi
Department Of Chemistry Graduate School Of Science And Engineering Tokyo Metropolitan University
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Chikaraishi Yoshito
Institute For Research On Earth Evolution Japan Agency For Marine-earth Science And Technology
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Goto Akiko
Department Of Chemistry Tokyo Metropolitan University
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力石 嘉人
Institute of Biogeosciences, Japan Agency for Marine-Earth Science and Technology
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S. Goto
Department of Chemistry, Tokyo Metropolitan University
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