Molecular organic geochemistry of ornithogenic sediment from Svalbard,Arctic  

作　　者：汪建君 孙立广 

机构地区：[1]Institute of Polar Environment,University of Science and Technology of China [2]Key Laboratory of Global Change and Marine-Atmospheric Chemistry,TIO,SOA

出　　处：《Chinese Journal of Polar Science》2009年第1期32-39,共8页极地研究（英文版）

基　　金：funded by the Key Project of National Natural Science Foundation of China(No.40476001);the Initial Support Scientific Funding of the Director of the Third Institute of Oceanography (HF07002),SOA;the opening funding from Guangzhou Institute of Geochemistry,Chinese Academy of Sciences

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 tatty acids were also detected in the sediments. In summary, the organic matters in the YN sediments were from the adjacent coal mines, bird feces, and plants.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 tatty acids were also detected in the sediments. In summary, the organic matters in the YN sediments were from the adjacent coal mines, bird feces, and plants.

关 键 词：ARCTIC Ornithogenic Sediment biomarkers SITOSTEROL ALKANOLS fatty acids. 

分 类 号：P593[天文地球—地球化学] P736.41[天文地球—地质学]