Brakstad Odd Gunnar, Almås Inger K, Krause Daniel Franklin
SINTEF Ocean, Dept. Environmental Technology, N-7465, Trondheim, Norway.
SINTEF Ocean, Dept. Environmental Technology, N-7465, Trondheim, Norway.
Chemosphere. 2017 Sep;182:555-558. doi: 10.1016/j.chemosphere.2017.05.046. Epub 2017 May 11.
Field data from the Deepwater Horizon (DWH) oil spill in the Gulf of Mexico (GoM) suggested that oxidation of gas compounds stimulated biodegradation of oil compounds in the deep sea plume. We performed experiments with local seawater from a Norwegian fjord to examine if the presence of dissolved gas compounds (methane, ethane and propane) affected biodegradation of volatile oil compounds, and if oil compounds likewise affected gas compound oxidation. The results from the experiment showed comparable oil compound biotransformation rates in seawater at 5 °C between seawater with and without soluble gases. Gas oxidation was not affected by the presence of volatile oil compounds. Contrary to DWH deep sea plume data, propane oxidation was not faster than methane oxidation. These data may reflect variations between biodegradation of oil and gas in seawater environments with different history of oil and gas exposure.
来自墨西哥湾“深水地平线”（DWH）漏油事件的现场数据表明，气体化合物的氧化刺激了深海羽状流中石油化合物的生物降解。我们用挪威峡湾的当地海水进行了实验，以研究溶解气体化合物（甲烷、乙烷和丙烷）的存在是否会影响挥发性油类化合物的生物降解，以及油类化合物是否同样会影响气体化合物的氧化。实验结果表明，在5摄氏度的海水中，有和没有可溶性气体的海水里油类化合物的生物转化速率相当。挥发性油类化合物的存在并未影响气体氧化。与DWH深海羽状流数据相反，丙烷的氧化速度并不比甲烷快。这些数据可能反映了在具有不同油气暴露历史的海水环境中，油类和气体生物降解之间的差异。
