Carbon isotopic composition of sterols in geochemical samples

K. Matsumoto, K. Yamada, H. Naraoka, R. Ishiwatari

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Carbon isotopic composition of sterols in marine Holocene sediments, marine sinking particles, tree leaves, and soils were determined. δ13C values of algae-derived sterols such as 24-methylcholesta-5, 22-dien-3β-o1 and dinosterol in the marine sediments range from -22.1 to -25.2‰, while those of 24-ethylcholest-5-en-3β-ol (24-ethylcholesterol) range from -22.6 to -24.3‰. We conclude that 24-ethylcholesterol in the marine sediments derives from marine algae, because their δ13C values are markedly different from those of the leaves of C3 (∼-29‰) and C4 (-14‰) plants and similar to those of the algal sterols.

Original languageEnglish
Pages (from-to)429-438
Number of pages10
JournalGEOCHEMICAL JOURNAL
Volume34
Issue number6
DOIs
Publication statusPublished - Jan 1 2000
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology

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