Fang J, Abrajano T A, Comet P, et al. Gulf of Mexico...

来自 : www.oalib.com/references/18893 发布时间：2021-03-24

ABSTRACT: 通过对神狐海域表层5个沉积物样品进行脂肪酸组成及其碳同位素分布特征测试和研究，结果表明总脂肪酸含量分布为5.14~8.99μg/g，碳数分布范围从C12到C32，类型包括正构饱和脂肪酸、支链脂肪酸、单不饱和脂肪酸、多不饱和脂肪酸和类异戊二烯酸等计48种；样品中饱和的短链脂肪酸主要来自细菌与浮游生物，而长链饱和脂肪酸来自陆源高等植物，其比例表明研究海域中海洋细菌与浮游生物输入量远远大于陆源高等植物的输入。支链脂肪酸10me16：0与单不饱和脂肪酸18：1ω9、16：1ω9主要来自硫酸盐还原菌，而单不饱和脂肪酸16：1ω7很大可能来源于硫氧化菌，比较相对含量得出神狐海域表层沉积物为还原环境。样品中检测出8种类异戊二烯酸，主要是植烷酸和17，21-ββ二升藿烷酸，及少量的姥鲛酸，推测为叶绿素a和细菌微生物的共同贡献。
Fang J, Abrajano T A, Comet P, et al. Gulf of Mexico hydrocarbon seep communities: XI-Carbon isotopic fractionation during fatty acid biosynthesis of ...Fang J, Abrajano T A, Comet P, et al. Gulf of Mexico hydrocarbon seep communities: XI-Carbon isotopic fractionation during fatty acid biosynthesis of seep organisms and its implication for chemosynthetic processes[J]. Chem Geol, 1993, 109: 217-279.Fang J, Abrajano T A, Comet P, et al. Gulf of Mexico hydrocarbon seep communities: XI-Carbon isotopic fractionation during fatty acid biosynthesis of seep organisms and its implication for chemosynthetic processes[J]. Chem Geol, 1993, 109: 217-279.Fang J, Abrajano T A, Comet P, et al. Gulf of Mexico hydrocarbon seep communities: XI