Distribution of moretene,sterere,fernene,hopene and dienoic carboxylic acid in marine sediments in sea area of the Southern Ocean

作     者：Jiang Shanchun and Tang Yunqian Institute of Geochemistry, Guangzhou Branch, Academia Sinica, Guangzhou 510640, China Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China Jiang Shanchun and Tang Yunqian Institute of Geochemistry, Guangzhou Branch, Academia Sinica, Guangzhou 510640, China Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China

出 版 物：《Acta Oceanologica Sinica》 (海洋学报（英文版）)

年 卷 期：1993年第12卷第2期

页      面：237-247页

核心收录：

学科分类：07[理学] 0707[理学-海洋科学] 

基　　金：This project is supported by National Laboratory of Organic Geochemistry China 

主　　题：Lipids diplotene moretene sterene fernene dienoic cacboxylic acid 

摘      要：The soluble organic matters were extracted from marine sediments in the sea area of Southern Ocean by using organic solvents. The hydrocarbon and carboxylic acid fractions were separated with the thin layer chromatography. The organic compounds of 170(H), 21α(H)- bishomomoretene, cholest - 5 - ene, 24 - methyl - cholestene, 24 - ethylcholestene, hop-17(21)-ene, neohop - 13(18)-ene, fern-8-ene, fern-7-ene, 170(H), 210 (H) - hop - 22(29)-ene (diplotene), steranes, β, β-hopanes C29 -C31 and unsaturated carboxylic acids C18:2Δ9.12 , C18:1Δ9,C18:1Δ11 , have been identi-fied in the hydrocarbon and carboxylic acid fractions by means of gas chromatography and gas chromatography - mass spec-trometry - data system. The distributions of 3, a - bishomomoretene, β,β- hopene and β,β- hopane are characteristic of immature organic matter. The sterane, C29 20S/20R epimer ratio 0. 6 indicate that the organic matter had experienced a thermal evolution in the early sedimentation. The unsaturated fatty acids especially dienoic acids and fernene compounds indicate not only the origin from autochthonous bacteria but also the reducing environment in the Southern Ocean.