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首页> 外文期刊>Environmental Science & Technology >Biodegradability of Corexit 9500 and Dispersed South Louisiana Crude Oil at 5 and 25 ℃
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Biodegradability of Corexit 9500 and Dispersed South Louisiana Crude Oil at 5 and 25 ℃

机译：5和25℃时Corexit 9500和分散的南路易斯安那原油的生物降解性

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摘要

The reported persistence of the dioctyl sodium sulfosucdnate (DOSS) surfactant in Corexit 9500 in the oil plumes formed during the Deepwater Horizon oil spill has contributed to concerns regarding the biodegradability and bioavailability of dispersed oil and dispersants used as an oil spill countermeasure in the Gulf of Mexico. We studied the biodegradation of DOSS and dispersed South Louisiana crude oil (SLC) in laboratory microcosms. Two oil-degrading cultures from the Gulf of Mexico were isolated, one from the surface (meso) and one from close to the area of the Macondo well (cryo). Each was enriched on SLC, the former at 25 ℃, the latter at 5 ℃. Results indicated that the meso culture rapidly and completely degraded DOSS, alkanes, and aromatics. The cryo culture metabolized the same compounds but with a lag of 28 d and a remaining residual of iso-alkanes, n- C_(30-35), and 4-ring PAHs.
机译：据报道，在Deepx Horizo​​n溢油事故期间形成的油柱中，Corexit 9500中的二辛基磺基硫酸钠（DOSS）表面活性剂持续存在，这引起了人们对用作墨西哥湾漏油对策的分散油和分散剂的生物降解性和生物利用度的担忧。墨西哥。我们在实验室缩影中研究了DOSS的生物降解和分散的南路易斯安那原油（SLC）。分离了来自墨西哥湾的两种降解石油的文化，一种来自地表（中观），一种来自靠近Macondo井的地区（cryo）。每种都在SLC上富集，前者在25℃，后者在5℃。结果表明，中观文化迅速并完全降解了DOSS，烷烃和芳烃。冷冻培养物代谢了相同的化合物，但有28 d的滞后时间，并且残留了异链烷烃，n-C_（30-35）和4环PAHs。

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  • 来源
    《Environmental Science & Technology》 |2013年第4期|1960-1967|共8页
  • 作者

    Pablo Campo; Albert D. Venosa; Makram T. Suidan;

  • 作者单位

    University of Cincinnati, School of Energy, Environmental, Biological and Medical Engineering, Cincinnati, Ohio 45221-0012, United States;

    U.S. Environmental Protection Agency, National Risk Management Research Laboratory, 26 W. Martin Luther King Drive, Cincinnati, Ohio 45268, United States;

    American University of Beirut, Faculty of Engineering and Architecture, Office of the Dean, Bechtel Engineering Bldg., Beirut, Lebanon;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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