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首页> 外文期刊>Estuarine Coastal and Shelf Science >Baseline for PAHs and metals in NW Gulf of Mexico related to the Deepwater Horizon oil spill
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Baseline for PAHs and metals in NW Gulf of Mexico related to the Deepwater Horizon oil spill

机译：墨西哥湾西北部与深水地平线漏油有关的多环芳烃和金属的基准

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摘要

As a rapid response to the massive oil spill caused by the sinking of the Deepwater Horizon (DWH) Platform in the northern Gulf of Mexico in April 2010, a baseline study was initiated. The study focused on determining the concentration of crude oil petroleum hydrocarbons and trace metals (Cr, Ni and V) in water and surface sediments from Mexico's EZZ, in the NW Gulf of Mexico. A total of 60 samples obtained from the shelf-slope regions were analyzed by GC/FID for 16 EPA priority polycyclic aromatic hydrocarbons (PAHs) and ICP/MS for Cr, Ni and V. The concentrations of PAHs in the surface water were below detection limits (<0.003-0.03 mu g L-1) while in sediments, ranged from 0.01 to 0.070 mu g g(-1). international sedimentary quality guidelines (ERL-ERM) indicated a low probability of harmful effects to benthic organisms. Similarly, metal concentrations in sediments exhibited low concentrations (Cr 25.2-117, Ni 9.6-50.8, V 42.9-150.8 mu g g(-1)). These metals were traced to a lithogenic source related to the heavy sediment load contributed by local rivers; no traces of anthropogenic inputs from oil related operations were identified. Significant enrichment of Ni and V was recorded in deep sediments whose ERL limits did not represent adverse conditions to benthic communities except for few sites on the upper continental slope. During the first two years of environmental monitoring of Mexico's EZZ in the NW Gulf of Mexico, no evidence of the DWH oil spill have been detected. (C) 2014 Elsevier Ltd. All rights reserved.
机译：为了对2010年4月墨西哥湾北部深水地平线（DWH）平台沉没引起的大规模漏油事件做出快速反应，启动了基线研究。该研究的重点是确定墨西哥西北部墨西哥EZZ的水和表层沉积物中原油石油烃和微量金属（Cr，Ni和V）的浓度。通过GC / FID分析了从架子斜坡地区获得的总共60个样品中的16种EPA优先级多环芳烃（PAHs）和ICP / MS中的Cr，Ni和V。地表水中的PAHs浓度低于检测值沉积物中的最大限量（<0.003-0.03μg L-1），范围从0.01到0.070μgg（-1）。国际沉积质量准则（ERL-ERM）表明，对底栖生物产生有害影响的可能性很小。同样，沉积物中的金属浓度也显示出较低的浓度（Cr 25.2-117，Ni 9.6-50.8，V 42.9-150.8μg g（-1））。这些金属被追溯到与当地河流造成的沉重泥沙负荷有关的成岩源。没有发现来自石油相关业务的人为投入的痕迹。在深部沉积物中记录到大量的镍和钒富集，这些沉积物的ERL限值并不代表对底栖生物的不利条件，除了上大陆斜坡上的少数站点。在墨西哥西北湾对墨西哥EZZ的环境监测的头两年中，没有发现DWH溢油的证据。 （C）2014 Elsevier Ltd.保留所有权利。

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