Molecular organic geochemistry of ornithogenic sediment from Svalbard, Arctic |
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Authors: | Wang Jianjun Sun Liguang |
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Institution: | 1. Institute of Polar Environment, University of Science and Technology of China, Hefei 230026, China;Key Laboratory of Global Change and Marine-Atmospheric Chemistry, TIO, SOA, Xiamen 361005, China 2. Institute of Polar Environment, University of Science and Technology of China, Hefei 230026, China |
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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 acid. The α-hydroxyl acids and ω-hydroxyl fatty 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. |
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Keywords: | Arctic Ornithogenic Sediment biomarkers sitosterol alkanols fatty acids |
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