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本文以胶州湾南部海域表层沉积物为研究对象,利用气质联用技术(GC-MS)研究了其正构烷烃、多环芳烃、甾烷和萜烷的参数特征,以及来源的解析指示。结果表明:胶州湾南部海域表层沉积物正构烷烃碳数范围为C_(9)~C_(34),均呈双峰分布,主峰碳分别为C_(17)、C_(27),且后峰丰度远高于前峰。沉积物中PAHs可能主要来源于石油及其衍生品的输入,近年来,其来源可能由化石燃料等燃烧为主转为石油产品输入影响为主。胶州湾南部海域Ts/Tm指示了石油输入的特征。C_(31)αβ(S/(S+R))、C_(32)αβ(S/(S+R))、C_(33)αβ(S/(S+R))等藿烷比值范围分别为0.61~0.63、0.42~0.58、0.64~0.71,C_(29)甾ααα(S/(S+R))比值为0.46~0.58,显示了较高成熟度的特征。
In this paper, the surface sediments in the southern waters of Jiaozhou Bay as the research object, the use of gas chromatography-mass spectrometry (GC-MS) study of its n-paraffin, PAHs, steranes and terpanes parameters characteristics, and the source of the analytical instructions. The results show that the carbon number of normal alkanes in the surface sediments of the southern Jiaozhou Bay is C 9 C 34, with a bimodal distribution with carbon peaks of C 17 and C 27 respectively, Abundance is much higher than the former peak. PAHs in sediments may come mainly from the input of petroleum and its derivatives. In recent years, the sources of the PAHs in the sediments may change from the combustion of fossil fuels to the input of petroleum products. Ts / Tm in southern Jiaozhou Bay indicates the characteristics of petroleum input. The ranges of the hopane ratios of C 31 C 3 / S 3 / S + S + C 32 / S 3 / S 3 / S 3 / S 3 / (0.61-0.63,0.42-0.58,0.64-0.71), and the ratio of C_ (29) -alpha-ααα (S / (S + R)) was 0.46-0.58, which showed the characteristics of higher maturity.