東京湾堆積物中の陸起源有機物と脂質組成(東幹夫・尾崎洋二教授退官記念)

概要

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Muddy sediment samples from the Arakawa river and the Tokyo bay were analyzed for n-alkanes, n-alcoholes, 4-methyl-sterols and 4-desmethyl-sterols. Broad humps that are related to oil pollution were found in the hydrocarbon fraction of the sediment samples. The content of n-alkanes, n-alcoholes, 4-desmethyl-sterols of 14 samples averaged 3.93μg/g, 18.2μg/g, 23.03μg/g, respectively. Larger contents occur in the sediments from the Tokyo bay than the Arakawa river. In the triangular diagram of C_<27>, C_<28>, C_<29>-steroles, the sediments of the Arakawa river are plotted on open marine and estuarine or bay, the sediments of the Tokyo bay are plotted on estuarine or bay and open marine. The distribution pattern-1; the contents of coprostanol (μg/g), 4-desmethyl -sterols (%) ; G, M, N, U, H, S and V (Table 5) are decreased with increasing water depth and father seaward from the coast. Conversely, the contents of 4-desmethyl -sterols (%) ; A, B, E, F, I, J, 1, 0, Q and R (Table 5) are increased. The distribution pattern-2; the highest contents (ug/g) of n-alkanes, n-alco-holes, phytol, dinosterol and 4-desmethyl-sterols are found in the muddy sediments on the central part of the Tokyo bay. L/H and CPI ratio of n-alkanes, n-alcoholes did not show regional trends.
長崎大学の論文
2004-03-26