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Volume 28 Issue 4
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Article Navigation >  Haiyang Xuebao  > 2006  >  28(4): 96-101
LÜ Xiao-xia, ZHAI Shi-kui. The distributions and geochemistry of sterols in core sediment from the Changjiang Estuary in China[J]. Haiyang Xuebao, 2006, 28(4): 96-101.
Citation: LÜ Xiao-xia, ZHAI Shi-kui. The distributions and geochemistry of sterols in core sediment from the Changjiang Estuary in China[J]. Haiyang Xuebao, 2006, 28(4): 96-101.
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The distributions and geochemistry of sterols in core sediment from the Changjiang Estuary in China

  • College of Marine Geo-science, Ocean University of China, Qingdao 266003, China

  • Received Date: 2004-11-26
  • Rev Recd Date: 2005-07-08
    Abstract
  • Two core sediments, from the Changjiang Estuary, China, were analyzed forsterols Severn sterols named as cholest-5-en-3β-ol, 5α-cholestan-3β-ol, 24-methyl-cholest-7-en-3β-ol, 4:24-methyl-5α-cholestan-3β-ol, 24-ethyl-cholest-22en-3β-ol, 24-ethyl-5α-cholestan-3β-ol and 4α, 23, 24-trimethyl-5α-cholest-22en-3β-ol were identified by means of GC-MS analysis.The relative abundance of C29 sterols, which mainly originate from terrigenous input, is the highest in all the sediment from Site 8.In Site 17, the relative abundance of C27 sterols mainly from zoo plankton input is the highest in the surface sediment, while that of C29 sterols is the highest downwards.In all the samples, the relative abundances of sterols are much higher than those of sterols at the same carbon number for the strong hydrogenation.The reductive hydrogenation of sterols is stronger downward with the depth, and that is much stronger in Site 8 than in Site 17 due to the different sedimentary circumstances.
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