多环芳烃(PAHs)在环境中的污染越来越受到重视。文章采集海口湾7个代表性点位表层水样,分析其中16种多环芳烃(PAHs)的含量,探讨其可能的来源。结果表明:海口湾表层水体中总PAHs平均值为33.6 ng/L,变化范围为12.3~108 ng/L,PAHs的组成以2～4环为主。分析荧蒽/芘的比值表明,海口湾水体中的多环芳烃主要来源于石油污染。 Polycyclic aromatic hydrocarbons (PAHs) pollution in the environment more and more attention. This paper collected surface water samples of seven representative spots in Haikou Bay and analyzed the content of 16 kinds of PAHs and probed into their possible sources. The results showed that the average total PAHs in surface water of Haikou Bay was 33.6 ng / L, ranging from 12.3 to 108 ng / L, and the composition of PAHs was mainly from 2 to 4 rings. Analysis of fluoranthene / pyrene ratio indicates that PAHs in Haikou Bay water mainly come from oil pollution.