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分析了山东半岛南部近海表层沉积物中游离态和碱不稳定结合态脂类物质的组成,结果显示:脂肪酸呈现以16∶0为主峰的单峰形分布趋势,具明显偶碳优势,海源为其主要来源,脂肪酸主要以结合态形式存在,不同类别的脂肪酸形态分布略有差异,脂肪酸的结构和来源是影响脂肪酸形态分布的重要因素;同样以海源为主的甾醇则主要以游离态形式存在,但陆源甾醇的结合态比重相对较高;烷烃呈现以C29烷烃为主峰的单峰形分布趋势,陆源输入是其主要来源;烷烃主要以游离态形式存在,且UCM(不可分辨成分)峰仅出现在游离态烷烃的气相色谱图中。
The composition of free and alkali-labile bound lipids in the surface sediments of the southern Shandong Peninsula was analyzed. The results showed that the distribution of fatty acids showed a unimodal distribution with 16: The main source of fatty acids mainly in the form of bound state, different types of fatty acids slightly different morphological distribution, the structure and source of fatty acids is an important factor affecting the distribution of fatty acids; the same source of sterols mainly in the free state, Terpineol showed a relatively high specific gravity of the bound state. Alkanes showed a monomodal distribution with C29 alkanes as the main peak, and terrestrial input was the main source. Alkanes were mainly present in free form, and UCM (indistinguishable components) only appeared in the free state Alkane gas chromatogram.