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研究了台州湾海域海水和表层沉积物中15种多环芳烃(PAHs)的浓度水平,评价了表层沉积物对多环芳烃的富集规律,探讨其可能来源。结果表明,表层沉积物中PAHs的浓度范围为85.4～167.6ng/g,平均值为138.62ng/g,总多环芳烃的最大值是椒江码头。表层沉积物中二环、三环、四环、五环和六环多环芳烃占总多环芳烃的百分含量平均值分别为7.8%,42.1%,33.3%,9.6%和7.2%,三环多环芳烃的含量最高;表层沉积物对多环芳烃的富集系数为532.7～1068.9,平均值为807.5,单组分菲的富集系数最高为122.7,最小的是苯并(a)芘为2.7;台州湾表层沉积物中的多环芳烃主要来源于燃煤污染,部分来源于石油烃类物质的直接污染。
The concentrations of 15 polycyclic aromatic hydrocarbons (PAHs) in seawater and surface sediments of the Taizhou Bay sea area were studied, and the enrichment of polycyclic aromatic hydrocarbons (PAHs) by surface sediments was evaluated and their possible sources were discussed. The results showed that the concentration of PAHs in surface sediments ranged from 85.4 to 167.6ng / g with an average of 138.62ng / g, and the maximum value of total PAHs was from Jiaojiang Wharf. The average percentages of polycyclic aromatic hydrocarbons (PAHs) in surface sediments were 7.8%, 42.1%, 33.3%, 9.6% and 7.2%, respectively. The average concentrations of tricyclic, PAHs were the highest in the surface sediments; the enrichment coefficients of surface sediments for PAHs were 532.7 ~ 1068.9 with an average value of 807.5, the highest enrichment coefficient of phenanthrene was 122.7, and the lowest ones were benzo (a) pyrene Of 2.7. The PAHs in the surface sediments of Taizhou Bay mainly come from coal-burning pollution and partly from the direct pollution of petroleum hydrocarbons.