鄭偉力2006-07-252018-06-282006-07-252018-06-282001http://ntur.lib.ntu.edu.tw//handle/246246/14782本計畫分析東海中、外陸棚六個表層 沈積物中泥質與砂質部份之脂肪族 烴類、脂肪醇與固醇的組成。結果顯 示：脂肪族烴類組成在砂質部份中分 布簡單並以正烷類為主，而在泥質部 份中則相當複雜以正烷類與支鏈烷 類為主。正烷類碳優指數在砂質部份 之平均值為1.60，在泥質部份之平均 值為2.38；暗示泥質部份較年青或新 鮮而砂質部份較年老或受到降解。正 脂肪醇與固醇在泥質與砂質部份中 之分布相似，而且砂質部份皆檢測到 葉綠素醇；此外，泥質與砂質部份之 高等植物烷類(HPA)指數很相近，指 示砂質部份並非全然為殘餘沈積物 ，即是含有部份近代沈積物。In this project, six surface sediment samples from the mid- and outer shelf of the East China Sea have been analyzed for their lipid composition in the mud and sand fractions. Results indicate that the composition of aliphatic hydrocarbons in the sand fractions is relatively simple with nalkanes predominant and that the composition of the mud fractions is rather complicated with n-alkanes and branched-chain alkanes predominant. Carbon preference index (CPI) values of C25-C33 n-alkanes average 1.60 for the sand fractions and 2.38 for the mud fractions, suggesting that the sand fractions are relatively older and much degraded and the mud fractions are relatively younger and less degraded. There is a high similarity in the nalkanol and sterol distributions for the mud and sand fractions. Further, phytol has been detected in all sand fractions. Higher plant alkane (HPA) indices for sand and mud fractions are quite close, indicating that the sand fractions are not all relict sediment but palimpest sediment instead.application/pdf92974 bytesapplication/pdfzh-TW國立臺灣大學海洋研究所脂質砂泥殘餘沈積物現代沈積物lipidssandmudrelict sedimentmodern sedimentreporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/14782/1/892611M002044.pdf