本文通过2012年5月份和9月份两次采样,研究了碣石湾表层海水油指纹特征参数的大小和差异。结果表明:5月份碣石湾表层海水正构烷烃呈单峰分布,主峰碳为n-C16,9月份海域海水正构烷烃呈双峰型,前峰明显高于后峰,5月份表层海水受到油类影响,9月份表层海水同时受到油类污染和陆生高等植物的影响。在碣石湾表层海水的甾烷和萜烷中,5月和9月份碣石湾表层海水17α(H),21β(H)-藿烷(C30)为主要成分,其次为17α(H),21β(H)-30-降藿烷(C29);胆甾烷(C27甾烷)和乙基胆甾烷(C29甾烷)的ααα占优,甲基胆甾烷(C28甾烷)含量相对较低。 In this paper, two samplings were conducted in May and September 2012 to study the size and difference of fingerprints of seawater in Jinshwan Bay. The results showed that n-C16 n-C16 macular seawater in the surface seawater of Jinshi Bay showed a monomodal peak distribution in May, while the former peak was significantly higher than that of the latter peak in May. The surface water in May was affected by oil In September, surface water was affected by both oil pollution and terrestrial higher plants. In the steranes and terpanes of the surface seawater in Jieshi Bay, 17α (H) and 21β (H) - hopane (C30) in the surface seawater of Jieshi Bay were the main components in May and September, followed by 17α (H), 21β H) -30-norhopane (C29); ααα of cholestane (C27 sterane) and ethyl cholestane (C29 sterane) is dominant, and the content of C28 sterane is relatively low .