Abstract:

A validated method for the extraction and quantification of DOSS in solid materials undergoing sedimentation (“sediment trap solids”) and seafloor sediment collected in the Gulf is presented. The application of the LC-QTOF methodology to marine sediment and sediment-trap solids gave DOSS concentrations of 0.74-22 μg kg-1 for sediments collected between 2010 and 2015 and 1.5-6.3 μg kg-1 for sediment-trap solids collected in 2010.

Suggested Citation:

Matt Perkins, Jennifer Field. 2017. Quantification of DOSS in Marine Sediment and Sediment-Trap Solids by LC-QTOF MS, Northern Gulf of Mexico, 2010-2015. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N7B56GP8

Publications:

Perkins, M. J., Joye, S. B., & Field, J. A. (2016). Selective quantification of DOSS in marine sediment and sediment-trap solids by LC-QTOF-MS. Analytical and Bioanalytical Chemistry, 409(4), 971–978. doi:10.1007/s00216-016-0010-2

Purpose:

A method for the extraction and quantification of DOSS in sediment and sediment trap solids by LC-QTOF was developed, validated, and applied to marine solids collected in the Gulf between 2010 and 2015. This data set was generated in order to characterize the spatial and temporal trends in DOSS impacted Gulf sediments.

Data Parameters and Units:

Date (year), DOSS concentration (ug kg-1), radial distance from Deepwater Horizon (km), latitude and longitude (decimal degrees), depth interval of sediment core analyzed (cm), percent recovery of 13C-DOSS surrogate standard (%), exact mass error (ppm), percent agreement with theoretical isotopic distribution (%), and internal ECOGIG sample identifier. Concentrations below the limit of detection (LOD) are indicated as

Methods:

Limits of detection for DOSS = 0.23 ug kg-1

Instruments:

Agilent 1100, TripleTOF ABSciex 5600 QTOF

Individual Files: