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首页> 外文期刊>Journal of Hazardous Materials >Marine biodegradation of crude oil in temperate and Arctic water samples
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Marine biodegradation of crude oil in temperate and Arctic water samples

机译：温带和北极水样品中海洋生物降解原油

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摘要

Despite increased interest in marine oil exploration in the Arctic, little is known about the fate of Arctic offshore oil pollution. Therefore, in the present study, we examine the oil degradation potential for an Arctic site (Disko Bay, Greenland) and discuss this in relation to a temperate site (North Sea, Denmark). Biodegradation was assessed following exposure to Oseberg Blend crude oil (100 mg L-1) in microcosms. Changes in oil hydrocarbon fingerprints of polycyclic aromatic hydrocarbons (PAHs), alkyl-substituted PAHs, dibenzothiophenes, n-alkanes and alkyltoluenes were measured by gas chromatography-mass spectrometry (GC-MS). In the Disko Bay sample, the degradation order was n-alkanes > alkyltoluenes (para- > meta- > ortho-isomers) > PAHs and dibenzothiophenes, whereas, the degradation order in the North Sea samples was PAHs and dibenzothiophenes >alkyltoluenes > n-alkanes. These differences in degradation patterns significantly affect the environmental risk of oil spills and emphasise the need to consider the specific environmental conditions when conducting risk assessments of Arctic oil pollution. (C) 2015 Elsevier B.V. All rights reserved.
机译：尽管对北极海洋石油勘探的兴趣增加，但对北极近海石油污染的命运知之甚少。因此，在本研究中，我们检查了北极站点（格陵兰岛迪斯科湾）的石油降解潜力，并针对温带站点（丹麦北海）进行了讨论。在微观环境中接触Oseberg Blend原油（100 mg L-1）后评估生物降解。通过气相色谱-质谱法（GC-MS）测量了多环芳烃（PAH），烷基取代的PAH，二苯并噻吩，正构烷烃和烷基甲苯的油烃指纹图谱的变化。在Disko Bay样品中，降解顺序为正构烷烃>烷基甲苯（对->间->邻位异构体）> PAHs和二苯并噻吩，而在北海样品中，降解顺序为PAHs和二苯并噻吩>烷基甲苯> n-烷烃。降解方式的这些差异会严重影响溢油的环境风险，并强调在进行北极石油污染的风险评估时必须考虑特定的环境条件。 （C）2015 Elsevier B.V.保留所有权利。

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