Application of GC×GC-HRT-MS Analysis of Two Iconic Oil Spills
Robert Nelson, PhD
Monday, July 16, 2018
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Chapters
Introduction
Goal - Compare and Contrast Two Iconic Oil Spills In The Gulf Of Mexico
We Study Crude Oil and Refined Petroleum Product Spills
GC×GC Facility at WHOI
Ixtoc I June 3, 1979 to March 23, 1980
Deepwater Horizon (DWH) April 20, - July 15, 2010
Sample collection
GC Comparison: Ixtoc I & DWH crudes
Ixtoc I 2D Color Contour Plot
Deepwater Horizon 2D Color Contour Plot
GC×GC Comparison: Ixtoc I & DWH
Traditional Biomarker Molecules (molecular fossils)
GC×GC Subtraction Chromatogram Ixtoc I minus DWH
Side Track: Non-traditional Biomarkers for Environmental Forensics
Side Track: Non-traditional Biomarkers for Environmental Forensics (cont.)
Archeal Core Ether Lipids PNAS 2007
Stratigraphic profile of the Timmins area
GC×GC-FID chromatograms
Figure 8.21 GC × GC–FID biomarker regions
Example 1
Example 2
Example 3
Example 4
Back on Track Ixtoc I and Deepwater Horizon
Confidence - The Power of High Resolution
GC×GC - High Resolution - TOF
DWH Ring Double Bond Equivalents (RDBE) vs Carbon
Ixtoc I Ring Double Bond Equivalents (RDBE) vs Carbon
GC×GC Subtraction Chromatogram
Ixtoc I Ring Double Bond Equivalents (RDBE) vs Carbon cont.
Ixtoc I – GC×GC-HRT Benzothiophene Suite
Ixtoc I Accurate Mass Measurements Dibenzothiophene Mass Spectrum
Literature Search – Sulfur Heterocycles
DWH Ring Double Bond Equivalents (RDBE) vs Carbon Number cont.
Ixtoc I Accurate Mass Measurements C1 (methyl) carbazoles
Ixtoc I Accurate Mass Measurements C2, C3, C4, & C5 carbazoles
Comparison of carbazoles and benzocarbazoles in Ixtoc I and DWH
Summary
Acknowledgements
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