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用气相色谱法测定厦门港微表层和次表层海水中烷烃的含量．微表层直链烷烃含量范围从未检出至４．１μｇ／Ｌ／检出的支链烷烃含量为０．１６～２．６μｇ／Ｌ；次表层直链烷烃含量范围从未检出至２．７μｇ／Ｌ，检出的支链烷烃含量为０．０３～１．４μｇ／Ｌ 微表层对烷烃的富集系数（ＥＦ）为１．０～２１．直链烷烃的ＥＦ值春季较大；支链烷烃的ＥＦ值一般小于同碳数的直链烷烃，植烷例外．根据获得的实验结果，对影响烷烃的含量分布及其ＥＦ值的诸因素进行了探讨。
Determination of Alkanes in Micro-surface and Sub-surface Sea Water of Xiamen Port by Gas Chromatography. The micro-scale linear paraffin content range from undetected to 4.1μg / L / the detected branched paraffin content of 0.16 ~ 2.6μg / L; sub-surface straight-chain paraffin content range never detected to 2. 7μg / L, the content of branched alkanes detected was 0.03-1.4μg / L, the enrichment coefficient (EF) of alkanes for micro-surface layer was 1.0-21. The EF of linear alkanes is larger in spring; the EF of branched alkanes is generally less than that of linear alkanes with the same carbon number, except phytane. Based on the experimental results obtained, the factors influencing the content distribution of alkanes and their EF values were discussed.