南极布兰斯菲尔德海峡沉积物的C_5～C_(15)烃类化合物

C 5-C 15 HYDROCARBON COMPOUNDS IN SURFICIAL SEDIMENTS FROM THE BRANSFIELD STRAIT,ANTARCTICA

本文研究了南极布兰斯菲尔德海峡表层沉积物中Ｃ５－Ｃ１５烃类化合物的分布特征，其中包括正构烷烃、异构烷烃、环烷烃和芳烃化合物。所有试样中均含有大量的芳烃物苯、甲苯、二甲苯和三甲苯，其中甲苯占绝对优势，为总烃量的７５－８１％。对一些有机化合物进行了多元统计分析，如Ｑ和Ｒ模式系统聚类分析和主因子分析。Ｑ模式的最长距离法反映了９０１航次和首次南大洋样的差异。９０１航次样经旋转后三个因子的等值线趋向上，各站位间有着明显的差别。

The C 5-C 15 hydrocarbon compounds have been studied in surficial sediments from the Bransfield strait,Antarctica.They include alkane,iso alkane,cyclohexane,aromatic and their substituted compounds.All samples contain large amount of aromatic compounds as benzene,toluene,xylene and trimethyl benzene.The toluene is the dominant component.The ratio between benzene and hexane is 0.47-1.26. Differentation of alkane,iso alkane,cyclohexane and aromatic compounds was achieved by using R type and Q type factor analysis,as well as principal factor analysis.By these analysis,the three factor of site G 27 have the extreme values.