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Chinese Science Bulletin

, Volume 42, Issue 22, pp 1894–1898 | Cite as

Organic geochemical studies of sinking particulate material in China sea area II

Geochemical significance of compositional features of ketone, aldehyde and alcohol compounds
  • Yi Duan
  • Mingzhong Cui
  • Lanhua Ma
  • Jinming Song
  • Shixin Zhou
  • Binjie Luo
Bulletin

Conclusions

We have for the first time studied the compositions of ketone, aldehyde and alcohol lipid compounds in sinking particulate materials from Yongshu Reef lagoon and the continental shelf of the East China Sea collected by sediment trap sampling apparatus. The results indicate that sinking particulate materials contain abundant isoprenoid ketone, aldehyde and alcohol lipid compounds which take part in marine chemical cycling. The compositional features of these compounds show that sinking particulate organic matter mainly comes from autochthonous marine organisms and Yongshu Reef lagoon has more submerged macrophytes-derived component, while the continental shelf of the East China Sea contains more dinoflagellate-derived constituent. The contribution of higher land plant to sinking particulate organic matter may be very small. In contrast, it is greater in Yongshu Reef lagoon than that in the continental shelf of the East China Sea. Sinking particulate organic matter in the two regions undergoes strong biochemical transformation processes before reaching the depth of 5 m to the sea floor, and its intensity is greater in Yongshu Reef lagoon than in the continental shelf of the East China Sea. These results have certain reference value to the researches of marine chemistry, marine biology and marine sedimentology in China, and reveal the importance of organic geochemistry to the study of oceanology.

Keywords

marine sinking particulate material composition of lipid compounds organic matter source and biochemical processes 

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Copyright information

© Science in China Press 1997

Authors and Affiliations

  • Yi Duan
    • 1
  • Mingzhong Cui
    • 1
  • Lanhua Ma
    • 2
  • Jinming Song
    • 3
  • Shixin Zhou
    • 1
  • Binjie Luo
    • 1
  1. 1.Lanzhou Institute of GeologyChinese Academy of SciencesLanzhouChina
  2. 2.Earthquake Research Institute of Lanzhou, SSBLanzhouChina
  3. 3.Institute of OceanologyChinese Academy of SciencesQingdaoChina

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