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本文叙述了用碳同位素质谱、毛细管气相色谱和三维全扫描荧光法等现代分析方法测定的沉积物中有机质的分布特征,从有机地球化学的观点探讨了东海长江口邻近海域(30°06’—31°30′N,122°30′—124°30′E)有机沉积物的来源,结果表明,该区域沉积物中的有机质主要来自长江口陆源植物和近海洋浮游生物,且长江陆源物从河口向海迅速减少,其中大部分沉积在123°E以西附近,这与其他海洋地质学家的研究结果相符。
This paper describes the distribution characteristics of organic matter in sediments measured by modern analytical methods such as carbon isotope mass spectrometry, capillary gas chromatography and three-dimensional full-scan fluorescence spectroscopy. From the point of view of organic geochemistry, the distribution of 30 ° 06’- 31 ° 30’N, 122 ° 30’-124 ° 30’E) organic sediments. The results show that the organic matter in the sediments of this area mainly comes from terrestrial plants in the Yangtze River estuary and near-sea plankton, The estuaries rapidly decreased to the sea, with most of them deposited near the west of 123 ° E, consistent with the findings of other marine geologists.