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本文对1986年1月和8月中法两国在长江口及邻近海域联合调查中所获得的气溶胶试样,进行了多环芳烃的研究.并就多环芳烃季节变化、来源和分布特征等影响因素作了一些探讨.结果表明,海洋上空气溶胶中含有一定量的多环芳烃化合物,它们的含量随着离岸距离的增加而逐渐减少.多环芳烃总量冬季明显高于夏季,它们的组分以低分子易挥发组分菲和萤蒽占优势,未检出苝存在.此外,还比较了有关站位的表层海水、悬浮颗粒和气溶胶中多环芳烃组分之间含量关系.
In this paper, the polycyclic aromatic hydrocarbons (PAHs) were studied in aerosol samples collected by China and France in the joint survey of the Yangtze Estuary and its adjacent waters in January and August 1986. The seasonal variation, source and distribution of PAHs And other influencing factors were discussed.The results showed that aerosols contained a certain amount of PAHs and their contents decreased with the increase of offshore distance.The total amount of PAHs in winter was obviously higher than that in summer, Their components are dominated by low-molecular-weight volatile components, phenanthrene and fluoranthene, and no perylene is detected.In addition, the relationship between surface seawater, suspended particles and PAHs in aerosols is also compared .