摘要
报道了南海北部沉积物中萘、菲、芴、蒽、芘和茁化合物的组成和分布.在0～100cm试样中含有少量的二甲基萘和三甲基萘化合物,400～500cm和700～800cm层段中的二甲基素有9个异构物,6个三甲基萘异构化合物,并且均以1,2-二甲基萘占优势.菲化合物在芳烃组分中含量最高(27%～42%),异构化合物亦最多.芴系列中有药、氧药、硫芴.苯并芴酮和氮芴等.茁和惹烯的存在,表明沉积有机质的母源物质来自陆源高等植物.二甲基萘异构化合物的比值、甲基菲和二甲基菲指数、芴系数,以及缺乏甲基萘等,标志南海北部沉积物的有机质成熟度低.
The chemical characteristic and distribution of polycyclic aromatic compounds occurring in the core from the South China Sea are studied. The compositions of polycyclic aromatic compounds are the series of naphthalene, phenanthrene, fluorene and chrysene. There are a few isomers of dimethyl and trimethyl naphthalene compounds present in 0~100cm layer. Nine isomers of dimethyl naphthalene and six isomers of trimethyl naphthalene are in 400 - 500cm and 700~800cm layers, with 1, 2-dimethyl naphthalene predominant in the two layers. phenanthrene fraction is higher in value and most variant in isomers among the aromatic compounds. The series of fluorene compounds contain fluorene, furan, thiophene, benzene fluoreneone and pyrrole. The occurrence of chrysene and retene indicates that the source of sedimentary organic matter is derived from terrenstrial higher plants. The low maturity of the sedimentary organic matter is demonstrated by the fact that 1) absence of methyl naphthalene (α- or β-) compounds; 2 ) low ratio between the isomers of dimethyl naphthalene; 3) low indices of methyl and dimethyl phenanthrene and 4) low coefficient of fluorene.
出处
《海洋通报》
CAS
CSCD
北大核心
1994年第4期41-49,共9页
Marine Science Bulletin
基金
国家自然科学基金项目
关键词
沉积物
萘
菲
芴
南海
化合物
core
naphthalene
phenanthrene
fluorene
composition
distribution
Sorth China Sea
