Abstract:

Macondo source oil (an aliquot of the oil collected during the Deepwater Horizon (DWH) oil release) was analyzed as a quality control (QC) sample by analytical laboratories along with the analyses of the field collected environmental samples. This QC sample analysis is generally referred to as “MC252 control oil.” MC252 control oil analyses were specified as an analytical requirement in the NRDA Analytical Quality Assurance Plan (NOAA 2011). This data set includes the chemistry data associated with available MC252 control oil analyses that support the chemistry data posting available on this website. In all, five different labs analyzed a laboratory control oil derived from the same parent source. There are 5007 different analyses of the control oil children. The control oil samples were analyzed for biomarkers, BTEX/PIANO, PAH/aPAH, Other PAH, SHC, TPH, and solids.

Suggested Citation:

BP Gulf Science Data. 2016. Analysis of MC 252 Control Oil by five different laboratories as a quality control sample for biomarkers, PAH, SHC, TPH, BTEX/PIANO. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N7DV1H9C

Purpose:

The purpose of this dataset is to collect in one place analyses of control oil QC analyses by five different laboratories to investigate consistency between and within data sets and labs. These data were collected by BP to help guide cleanup operations under the direction of the U.S. Coast Guard and to support the Natural Resource Damage Assessment efforts by federal and state agencies and BP to evaluate potential injury to natural resources in the Gulf. The data and supplemental information are being made available to the public in a format that will facilitate the use of the data for research and other studies. GRIIDC is making these data available following the shut down of the Gulf Science Data Portal. This will ensure that the data are available and searchable through GRIIDC data discovery.

Data Parameters and Units:

Concentrations of: Benzene, Toluene, Ethylbenzenes and Xylenes/Paraffins, Isoparaffins, Aromatics, Naphthenes, or Olefins BTEX/PIANO (80 compounds) (mg/kg);Polynuclear Aromatic Hydrocarbons/alkylated Polynuclear Aromatic Hydrocarbons (PAH/aPAH)(68 compounds)(mg/kg); Saturated Hydrocarbon Compounds (SHC) (37 compounds) (mg/kg); TPH (6 types) Total Petroleum Hydrocarbons (TPH) (6 types) (mg/kg); Total Extractable Material (TEM) (mg/kg) ; Total Extractable Hydrocarbons (mg/kg); Biomarkers (90 compounds) (mg/kg); Other Polynuclear Aromatic Hydrocarbons (Other PAH) (14 compounds) (mg/kg) Analytical Method = Method used to produce the measured concentration as reported by the laboratory; ASR Number = Analytical Service Request number of Analytical Request Form number associated with a data set. Not all samples have an ASR or related number; Base Analytical Method = A generalization of the analytical method, standardized across laboratory specific variations in the specific analytical method to aid the data user with categorizing samples by analysis type; Chemical Code = A standardized system specific code to uniquely identify each chemical or analyte; Chemical Name = The name of the chemical analyzed; Chemical Type = Indicates whether the chemical is a target analyte or an added standard (e.g. surrogates); Concentration - NDs at MDL = The reported concentration of the chemical in the sample or the detection limit for non-detect results; Concentration - NDs at zero = The reported concentration in the sample or a zero value for non-detects; Data Publication Date = Date published on BP website gulfsciencedata.bp.com (M/DD/YYYY); Data Publication Reference = A general description of data provided and a version control number; Date Analyzed = The date that the sample was analyzed to produce the reported concentration (M/DD/YYYY); Date Extracted = The date that the sample was extracted at the laboratory (M/DD/YYYY); Dilution Factor = The factor by which the sample was diluted for analysis; Lab = The name of the laboratory generating the anaytical chemistry data; Lab Material = The most specific description of the substance or fraction that is analyzed (MC-252 Control Oil); Lab Matrix = The most general description of the substance or fraction of the sample that is analyzed (oil/non-aqueous); Lab Qualifiers = The data qualifiers originaly applied by the analytical laboratory; Laboratory Sample ID = The internal laboratory sample identifier; Measurement Basis = Indicates whether a concentration value is expressed in terms of the wet weight or dry weight of the environmental medium (wet); Method Detection Limit = The laboratory determined method detection limit associated with each chemical result; Nondetect Flag = Indicates whether or not the analyte was detected in a sample; Parameter Type = The basic group to which the chemical belongs: PAH, SHC, TPH, PIANO, biomarkers, dispersants, and others; Preparation Method = Method used to prepare the sample for analysis; Reporting Limit = The laboratory determined reporting limit concentration associated with each chemical result; SDG = Sample Delivery Group. A lab generated number for a batch of samples processed together; Unit = The units of the associated concentration value;

Methods:

8015; 8260; 8270; 2540

Instruments:

GC/MS;GC-FID

Individual Files: