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浙江南部近海沉积物柱状样中脂类生物标志物的组成及形态分布
引用本文:王江涛,杨庶,谭丽菊,胡佶.浙江南部近海沉积物柱状样中脂类生物标志物的组成及形态分布[J].海洋学报,2011,33(5):83-90.
作者姓名:王江涛  杨庶  谭丽菊  胡佶
作者单位:中国海洋大学 化学化工学院,山东 青岛 266100
基金项目:国家重点基础研究发展计划(2010CB428701;2001CB409703);国家自然科学基金项目(41076065)。
摘    要:分析了浙江南部近海(东海陆架泥质区)沉积物柱状样中游离态和碱不稳定结合态脂类生物标志物的组成.沉积物中的脂肪酸呈现以C16脂肪酸为主峰的单峰形分布趋势,具明显偶碳优势,除表层沉积物中脂肪酸以游离态为主外,结合态为柱状样中脂肪酸的主要存在形态,脂肪酸的垂直分布主要由降解作用控制;以甾醇和脂肪醇为主体的醇酮组分主要以游离态...

关 键 词:东海陆架泥质区  沉积物  脂类生物标志物  形态分布
收稿时间:9/3/2010 12:00:00 AM

Composition and form distribution of lipids biomarkers in a sediment core from southern coastal area of Zhejiang Province
WANG Jiang-tao,YANG Shu,TAN Li-ju and HU Ji.Composition and form distribution of lipids biomarkers in a sediment core from southern coastal area of Zhejiang Province[J].Acta Oceanologica Sinica (in Chinese),2011,33(5):83-90.
Authors:WANG Jiang-tao  YANG Shu  TAN Li-ju and HU Ji
Institution:College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
Abstract:Previous studies show that: the composition and form distribution of lipids vary distinctly in different sediments, so to study the composition and form distribution of lipids biomarkers in southern coastal area of Zhejiang Province (the mud areas of the East China Sea shelf), a sediment core is collected, free and OH--labile lipids of the core are released via sequential treatments. Results show that fatty acids are in obvious even carbon number predominance, and characteristic of single peak with C16-fatty acids as the main peak, the vertical content distribution of fatty acids is mainly controlled by degradation, bound form is the main existent form of fatty acids in the core except in surficial sediment, where fatty acids mainly exist in free forms. A&K (fractions of alcohols and ketones) which are constituted mainly by sterols and fatty alcohols exist as free forms in majority, but phytols perform distinctly which mainly exist in bound forms, degradation mightily affects their vertical content distributions, but for ketones, eutrophication of the upper water in the East China Sea probably also play an important role, and in sediments of about 1950-1969, the contents of many lipids vary abnormally, we consider that this may illuminate the possible change of the ecosystem of upper water in the East China Sea caused by Changjiang River floods in 1954 and 1969. Hydrocarbons are characteristic of double peaks, and the concentration of C29,C31 are higher than other hydrocarbons, hydrocarbons are mainly exist in free forms, and UCM (Unresolved Complex Mixtures) peaks only emerge in chromatograms of free hydrocarbons fractions. Fatty acids and A&K in each form are mainly from marine sources while terrestrial input is the main source of hydrocarbons.
Keywords:the mud areas of the East China Sea shelf  sediments  lipids biomarkers  form distribution
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