ガスクロマトグラフィー/同位体質量分析法による堆積物中の個別ステロールの安定炭素同位体分析

概要

論文の詳細を見る
An analytical method of stable carbon isotopic composition of individual sterols in sediment samples by gas chromatography/isotope ratio mass spectrometry (GC/IRMS) is presented. Sterols separated from a sediment sample, are acetylated prior to GC/IRMS analysis. Replicate δ13C analyses of acetyl esters of 4 standard sterols revealed that the derivatization process is reproducible, with an average error (1σ) of 0.4‰±0.1‰, except for one sterol (a tri-unsaturated sterol). The original, underivatized sterol δ13C values were computed after an empirical correction for the carbon introduced during the acetylation. An application of the method to a marine sediment is presented with a reproducibility of 0.5‰±0.3‰.
日本質量分析学会の論文
1997-12-01