The ubiquity of phenanthrene series, chrysene series compounds, perylene and retene compounds in the sediment indicated that PAHs mainly came from the terrestrial plants.

在样品中检测到，表明这地区存在生物甲烷合成和细菌作用，具有生成油气及然气水合物可能性。

In this study a series of different maturation degree coals are yielded by thermally treating a lowgrade lignite, and are used as the sorbents for sorption equilibrium study of phenanthrene.

将云南先锋褐煤采用热模拟的实验方法制成熟度不同的煤,并将煤中的干酪根用于对菲的吸附研究。