Barataria Bay 2011 Oil Composition Total Aliphatic Hydrocarbons

One and a half years after the Deepwater Horizon (DWH) oil spill a set of subtidal and intertidal marsh sediment cores were collected in Barataria Bay, Louisiana an area known to be impacted by the spill. These cores were analyzed to determine the concentration and if the source of the hydrocarbon was the DWH oil spill based on chemical fingerprinting. An archived core, collected before the DWH oil spill from the same area, was also analyzed to assess the background hydrocarbon composition of the area. In addition pre-spill concentrations were assessed based on deeper core sections. The analyses included total aliphatic hydrocarbons. The overall objective was to see if sediments were contaminated with DWH oil, how much and how these concentrations compared to concentrations in this area before the DWH oil spill. Additional data can be found in GRIIDC datasets R1.x137.000:0012, R1.x137.000:0014, R1.x137.000:0015, and R1.x137.000:0016.深水地平线号（Deepwater Horizon，简称DWH）漏油事故发生一年半后，研究人员在受该事故影响的路易斯安那州巴拉塔里亚湾采集了一套潮下带与潮间带沼泽沉积岩芯。随后对这些岩芯开展分析，通过化学指纹图谱法测定烃类物质的浓度，并溯源其是否来自DWH漏油事故。此外，研究团队还对事故前在同一区域采集的存档岩芯进行分析，以评估该区域的本底烃类组成，并通过岩芯的深层沉积段估算了溢油前的烃类浓度水平。本次分析涵盖总脂族烃含量的测定。本研究的总体目标为：探明沉积物是否遭受DWH溢油污染、污染程度如何，以及此类污染浓度与该区域溢油前的浓度水平相比存在何种差异。相关补充数据可于GRIIDC数据集R1.x137.000:0012、R1.x137.000:0014、R1.x137.000:0015及R1.x137.000:0016中获取。