• 作者： 鄭偉力
• 作者服務機構： 國立臺灣大學海洋研究所
• 中文摘要： 筆者以色層分析法研究了臺灣西南方33個海洋沈積物之烴類，總正烷類之含量範圍是337至3767 ng/g，平均值為
  2019 ng/g，該值是臺灣沿海各地區最高者，碳優指數（C ~C ）之變化範圍是1.3至4.4，平均值為1.8，這些低值表
  示來自陸源之有機物質並不扮演重要角色，此外，原始烷與植物烷含量之平均值分別為 88 ng/g 與 27 ng/g，都相當高
  顯示化石煙烴類之輸入，總芳香族烴類之濃度範圍是0.49至12.57 g/g，平均值為 1.95 g/g，最高值出現於最靠近高雄港
  之測站，這可歸因於繁忙之油輪交通與運作、船舶交通及工業活動，有關芳香族烴類之分佈亦加以討論，在研究區域之
  周邊11個測站均檢測到類異半?烷類之成熟信號，這確實地證明整個研究區域都含有化石烴類。
  F
• 英文摘要： Thirty-three samples of marine sediments from off the southwestern coast of Taiwan have beenanalyzed chromatographically for hydrocarbons. Total contents of n-alkanes range from 337 to 3767 ng/gwith a mean of 2019 ng/g, which is the highest among the coastal areas of Taiwan. Carbon preference in-dices（C -C ）vary from 1.3 to 4.4 with an average of 1.8; these low CPIs indicate that land-derivedorganic matter doesn't play a major role. In addition, there are rather high levels of both pristane andphytane - 88 ng/g (mean) and 27 ng/g (mean), respectively-suggesting inputs of fossil hydrocarbons.Total aromatic hydrocarbons range in concentration from 0.49 to 12.57 g/g having an average of 1.95 g/g, the highest value found at the station nearest to Kaohsiung Harbor can be attributed to heavy tankertraffic and operations, other ship traffic, and industrial activities. The distribution pattern of aromatichydrocarbons is discussed. Maturity markers of acyclic isoprenoid alkanes have been detected at elevenstations along the periphery of the study area; this conclusively demonstrates the presence of fossil hydro-carbons in the whole area.
• 中文關鍵字： n-alkanes; aliphatic hydrocarbons; pristane; phytane; isoprenoid hydrocarbon; aromatic hydrocarbons
• 英文關鍵字： --