Coprostanol in a sediment core from the anoxic Tan-Shui Estuary, Taiwan

Woei Lih Jeng, Bor Cheng Han

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

A short sediment core with a length of approximately 40 cm taken from the anoxic Tan-Shui estuary, Taiwan, was analysed for extractable and bound coprostanol (Sβ-cholestan-3β-ol), cholestanol (5α-cholestan- 3β-ol) and cholesterol (cholest-5-en-3β-ol). Extractable Σcoprostanol and cholestanol concentrations exhibit an abrupt change at a depth of about 20 cm, which supposedly marks the time when a sewage treatment plant became operational in the estuary in 1980. The Σcoprostanol/cholesterol and cholestanol/cholesterol ratios are comparatively higher in sediment than in the sewage effluent, implying some degree of diagenesis in the extractable phase. Anoxicity must have played a crucial role in the preservation and diagenesis of the sterols. In the upper layer (c. top 20 cm), the concentrations of extractable Σcoprostanol, normalized to total organic carbon (TOC), increase down the core. Extractable cholestanol exhibits the same trend, but extractable cholesterol shows the opposite trend. This indicates cholesterol reduction to these two stanols. In addition, both bound Σcoprostanol/TOC and cholestanol/TOC display a decreasing trend with core depth and no pronounced concentration change at 20 cm depth. The averages of percent bound sterols are in the following order: cholesterol >Σcoprostanol>cholestanol.

Original languageEnglish
Pages (from-to)727-735
Number of pages9
JournalEstuarine, Coastal and Shelf Science
Volume42
Issue number6
DOIs
Publication statusPublished - Jun 1996

Fingerprint

coprostanol
total organic carbon
sediment core
Taiwan
estuaries
sterol
cholesterol
estuary
sediments
diagenesis
sewage treatment
sterols
carbon
sewage
effluent
sewage effluent
sediment
trend

Keywords

  • bound
  • coprostanol
  • diagenesis
  • extractable
  • sediment

ASJC Scopus subject areas

  • Aquatic Science
  • Oceanography
  • Earth and Planetary Sciences(all)
  • Environmental Science(all)

Cite this

Coprostanol in a sediment core from the anoxic Tan-Shui Estuary, Taiwan. / Jeng, Woei Lih; Han, Bor Cheng.

In: Estuarine, Coastal and Shelf Science, Vol. 42, No. 6, 06.1996, p. 727-735.

Research output: Contribution to journalArticle

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