Article

 

PlaceTraceAnalysisofSurfactants.pdf Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/articles/vd66w173b

Descriptions

Attribute NameValues
Creator
Abstract
  • After the April 2010 explosion on the Deepwater Horizon oil rig, and subsequent release of millions of barrels of oil, two Corexit oil dispersant formulations were used in unprecedented quantities both on the surface and sub-surface of the Gulf of Mexico. Although the dispersant formulations contain four classes of surfactants, current studies to date focus on the anionic surfactant, bis-(2-ethylhexyl) sulfosuccinate (DOSS). Factors affecting the integrity of environmental and laboratory samples for Corexit analysis have not been systematically investigated. For this reason, a quantitative analytical method was developed for the detection of all four classes of surfactants, as well as the hydrolysis products of DOSS, the enantiomeric mixture of α- and β-ethylhexyl sulfosuccinate (α-/β-EHSS). The analytical method was then used to evaluate which practices for sample collection, storage, and analysis resulted in high quality data. Large volume, direct injection of seawater followed by liquid chromatography tandem mass spectrometry (LC–MS/MS) minimized analytical artifacts, analysis time, and both chemical and solid waste. Concentrations of DOSS in the seawater samples ranged from 71 to 13,000 ng/L, while the nonionic surfactants including Span 80, Tween 80, Tween 85 were detected infrequently (26% of samples) at concentrations from 840 to 9100 ng/L. The enantiomers α-/β-EHSS were detected in seawater, at concentrations from 200 to 1900 ng/L, and in both Corexit dispersant formulations, indicating α-/β-EHSS were applied to the oil spill and may be not unambiguous indicator of DOSS degradation. Best practices are provided to ensure sample integrity and data quality for environmental monitoring studies and laboratory that require the detection and quantification of Corexit-based surfactants in seawater.
Keyword
Rights Statement
Additional Information
  • description.provenance : Made available in DSpace on 2016-08-02T21:14:14Z (GMT). No. of bitstreams: 3 krauserp1410441866.zip: 1019292 bytes, checksum: c385657debc2ecb23b016867667aaf9f (MD5) PlaceTraceAnalysisofSurfactants.pdf: 834076 bytes, checksum: b60719189c333336dfe2bc8839120fa3 (MD5) PlaceTraceAnalysisofSurfactantsAppendixA.pdf: 540872 bytes, checksum: aed2e8f85d0569f7969eae56c8885386 (MD5) Previous issue date: 2016-07
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2016-08-02T21:14:14Z (GMT) No. of bitstreams: 3 krauserp1410441866.zip: 1019292 bytes, checksum: c385657debc2ecb23b016867667aaf9f (MD5) PlaceTraceAnalysisofSurfactants.pdf: 834076 bytes, checksum: b60719189c333336dfe2bc8839120fa3 (MD5) PlaceTraceAnalysisofSurfactantsAppendixA.pdf: 540872 bytes, checksum: aed2e8f85d0569f7969eae56c8885386 (MD5)
  • description.provenance : Submitted by Open Access (openaccess@library.oregonstate.edu) on 2016-07-25T17:36:07Z No. of bitstreams: 2 PlaceTraceAnalysisofSurfactants.pdf: 834076 bytes, checksum: b60719189c333336dfe2bc8839120fa3 (MD5) PlaceTraceAnalysisofSurfactantsAppendixA.pdf: 540872 bytes, checksum: aed2e8f85d0569f7969eae56c8885386 (MD5)

Relationships

Parents:

Items