Characterization of subsurface polycyclic aromatic hydrocarbons at the Deepwater Horizon site
Characterization of subsurface polycyclic aromatic hydrocarbons at the Deepwater Horizon site
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DOI：
10.1029/2010gl045046
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发表时间：
2010-10-21
影响因子：
5.2
通讯作者：
Lohrenz, Steven E.
中科院分区：
文献类型：
--
作者：
Diercks, Arne-R.;Highsmith, Raymond C.;Lohrenz, Steven E.
本文报道了对深水地平线油井(又称马孔多、密西西比峡谷区块252或MC252井)附近地下水中多环芳烃(PAH)分布的初步观察。2010年5月9日至16日进行的现场荧光和光束衰减剖面的特点是，在深度大于1000米处有明显的峰值，最高强度靠近井口，随着距离井口的增加，强度逐渐降低。根据深度荧光和光束衰减异常，对水样进行了气相色谱/质谱仪(GC/MS)分析，证实存在浓度高达189mug L(-1)(Ppb)的多环芳烃。暴露于被认为对海洋生物有毒的多环芳烃的地下将发生在井口西南地区1000米至1400米之间、延伸至少13公里的离散深度层中。引文：Diercks，A.-R.等人。(2010)，地球物理深水地平线地下多环芳烃的特征。莱特，37，L20602，DOI：10.1029/2010GL045046。
Here, we report the initial observations of distributions of polycyclic aromatic hydrocarbons (PAH) in subsurface waters near the Deepwater Horizon oil well site (also referred to as the Macondo, Mississippi Canyon Block 252 or MC252 well). Profiles of in situ fluorescence and beam attenuation conducted during 9-16 May 2010 were characterized by distinct peaks at depths greater than 1000 m, with highest intensities close to the wellhead and decreasing intensities with increasing distance from the wellhead. Gas chromatography/mass spectrometry (GC/MS) analyses of water samples coinciding with the deep fluorescence and beam attenuation anomalies confirmed the presence of polycyclic aromatic hydrocarbons (PAH) at concentrations reaching 189 mu g L(-1) (ppb). Subsurface exposure to PAH at levels considered to be toxic to marine organisms would have occurred in discrete depth layers between 1000 and 1400 m in the region southwest of the wellhead site and extending at least as far as 13 km. Citation: Diercks, A.-R., et al. (2010), Characterization of subsurface polycyclic aromatic hydrocarbons at the Deepwater Horizon site, Geophys. Res. Lett., 37, L20602, doi: 10.1029/2010GL045046.