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Environmental Stability of Selected Petroleum Hydrocarbon Source and Weathering Ratios

机译：选定石油烃源的环境稳定性和风化率

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摘要

Weathering and biodegradation alterthe composition of spilled oil, making it difficult to identify the source of the release and to monitor its fate in the environment. Using intertidal sediment and terrestrial soil data that cover a wide range of oil weathering states, we show that ratios of alkylated dibenzothiophenes and phenanthrenes are useful for source identification even up to 98% depletion of total polycyclic aromatic hydrocarbons (PAHs). Furthermore, we find that some ratios of alkylated naphthalenes, phenanthrenes, and chrysenes can qualitatively assess the extent of weathering an oil has undergone since a spill. These source and weathering ratios appear to successfully describe oil depletion and to identify sources in subtidal sediment data from the M/C Haven spill in Italy, the Exxon Valdez spill in Alaska, and a North Sea oil spill.
机译：风化和生物降解改变了溢油的成分，使其难以确定排放源并难以监测其在环境中的命运。利用潮间带沉积物和覆盖广泛的石油风化状态的陆地土壤数据，我们表明烷基化二苯并噻吩和菲的比例甚至可用于高达98％的总多环芳烃（PAHs）枯竭的源识别。此外，我们发现某些比例的烷基化萘，菲和可以定性评估自泄漏以来石油遭受的风化程度。这些源和风化比似乎成功地描述了油耗，并从意大利的M / C Haven溢油，阿拉斯加的埃克森·瓦尔迪兹溢油和北海溢油中识别了潮下沉积物数据的来源。

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