Dispersant marker chemistry data associated with submerged sediment samples and sediment-associated water samples collected in the Gulf of Mexico from August 2010 through November 2011

The focus of this data posting is dispersant marker chemistry data associated with submerged sediment samples collected in both federal and state jurisdictional waters in the Gulf of Mexico from August 2010 through November 2011. Additionally, sediment-associated water samples (e.g., pore water, supernatant, floc, and slurp) are also provided in this data posting. More than 2,100 submerged sediment and associated water samples with associated dispersant marker chemistry analyses are included in this data posting. These samples were collected at approximately 1,295 sampling stations during 18 studies, involving many sampling cruises and/or surveys. These studies can be classified into four general categories: • NRDA Cooperative—Studies conducted as part of the NRDA which were agreed to and executed cooperatively by the National Oceanic and Atmospheric Administration (NOAA), U.S. Department of Interior (DOI), and/or other Trustees, and BP. • BP NRDA Independent—Studies conducted by BP independently to develop data to support and inform the NRDA. • Trustee Independent—Studies conducted by NOAA, DOI, and/or other Trustees independently to develop data to support and inform the NRDA. • Response (non-NRDA)—Studies conducted by BP and/or government representatives under the direction of the Unified Area Command and in association with activities performed in response to the DWH accident (the Response). Dispersant markers are chemicals present in the Corexit dispersant formulations used in response to the Deepwater Horizon accident. The chemical parameters provided in this data posting include the following dispersant markers: Dipropylene glycol n-butyl ether (DPnB), Glycol ethers, Dioctyl sodium sulfosuccinate (DOSS), 2-Butoxyethanol. This dataset includes data associated with natural field samples, along with the associated field-collected quality control samples, such as field replicates, equipment blanks, field blanks, and trip blanks. Laboratory duplicate samples are provided, where available. No other laboratory quality control samples (e.g., laboratory blanks and spike samples) are included in this data posting.

本数据集聚焦2010年8月至2011年11月期间，在墨西哥湾联邦及州管辖海域采集的水下沉积物样品相关的分散剂标记物化学数据。此外，本数据集还提供沉积物伴生水样品（如孔隙水、上清液、絮状物及抽吸水样）。本数据集共包含超过2100份水下沉积物及伴生水样品，均配套开展了分散剂标记物化学分析。上述样品通过18项研究、多次采样航次及/或调查，在约1295个采样站位采集得到。本批研究可分为四大类别：
• 自然资源损害评估（NRDA）合作研究：由美国国家海洋和大气管理局（NOAA）、美国内政部（DOI）及/或其他托管方与英国石油公司（BP）共同商定并合作开展的NRDA相关研究。
• BP独立开展NRDA研究：由BP独立开展，旨在为NRDA提供数据支撑与参考的研究。
• 托管方独立开展NRDA研究：由NOAA、DOI及/或其他托管方独立开展，旨在为NRDA提供数据支撑与参考的研究。
• 溢油响应（非NRDA类）：由BP及/或政府代表在联合区域指挥部指挥下开展，与深水地平线（DWH）事故溢油响应行动相关的研究。
分散剂标记物指用于深水地平线事故溢油响应的科立芝（Corexit）分散剂配方中所含的化学物质。本数据集提供的化学参数包含以下分散剂标记物：二丙二醇单丁醚（DPnB）、乙二醇醚、琥珀酸二辛酯磺酸钠（DOSS）、2-丁氧基乙醇。本数据集包含野外自然样品的相关数据，以及配套采集的野外质量控制样品，包括野外平行样、设备空白样、现场空白样及航次空白样。若可获取，本数据集还将提供实验室平行样。本数据集未包含其他实验室质量控制样品（如实验室空白样与加标样品）。