极地研究

极地研究 ›› 2009, Vol. 20 ›› Issue (1-English): 32-39.

• 研究论文 • 上一篇    下一篇

Molecular organic geochemistry of ornithogenic sediment from Svalbard, Arctic

 Wang Jianjun1,2 and Sun Liguang1   

  1. 1 Institute of Polar Environment, University of Science and Techology of China, Hefei 230026, China;
    2 Key Institute of Global Change and Marine-Atmospheric Chemistry, TIO, SOA, Xiamen 361005, China
  • 出版日期:1959-03-30 发布日期:1959-03-30
  • 通讯作者: Sun Liguang

Molecular organic geochemistry of ornithogenic sediment from Svalbard, Arctic

 Wang Jianjun1,2 and Sun Liguang1   

  1. 1 Institute of Polar Environment, University of Science and Techology of China, Hefei 230026, China;
    2 Key Institute of Global Change and Marine-Atmospheric Chemistry, TIO, SOA, Xiamen 361005, China
  • Online:1959-03-30 Published:1959-03-30
  • Contact: Sun Liguang

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摘要：

The molecular biomarker compositions of the ornithogenic sediments (YN), from Svalbard, Arctic were investigated. The results showed that n-alkanes had a bimodal pattern and their odd-even preference was not obvious. The alkanes contained unresolved complex mixtures (UCM) and relatively high levels of pristine and retene, indicating pollution from the nearby coal mines. The n-alkanols in the sediments had even- to -odd preference, and they might originate mainly from modern biota. Sistosterol, the main sterol in herbivores feces, was the dominant sterol, indicating that sitosterol might be a good biomarker of input from the birds feces in the sediments. The fatty acids of the sediments showed even- to -odd preference, and the main unsaturated fatty acid is C18∶1 acid. The α-hydroxyl acids and ω-hydroxyl fatty acidswere also detected in the sediments. In summary, the organicmatters in the YN sedimentswere from the adjacent coalmines, bird feces, and plants.

关键词: Arctic, Ornithogenic Sediment, biomarkers, sitosterol, alkanols, fatty acids

Abstract:

The molecular biomarker compositions of the ornithogenic sediments (YN), from Svalbard, Arctic were investigated. The results showed that n-alkanes had a bimodal pattern and their odd-even preference was not obvious. The alkanes contained unresolved complex mixtures (UCM) and relatively high levels of pristine and retene, indicating pollution from the nearby coal mines. The n-alkanols in the sediments had even- to -odd preference, and they might originate mainly from modern biota. Sistosterol, the main sterol in herbivores feces, was the dominant sterol, indicating that sitosterol might be a good biomarker of input from the birds feces in the sediments. The fatty acids of the sediments showed even- to -odd preference, and the main unsaturated fatty acid is C18∶1 acid. The α-hydroxyl acids and ω-hydroxyl fatty acidswere also detected in the sediments. In summary, the organicmatters in the YN sedimentswere from the adjacent coalmines, bird feces, and plants.

Key words: Arctic, Ornithogenic Sediment, biomarkers, sitosterol, alkanols, fatty acids