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Fig. 1 | Chemistry Central Journal

Fig. 1

From: Interpreting comprehensive two-dimensional gas chromatography using peak topography maps with application to petroleum forensics

Fig. 1

a The three-dimensional view of detailed topography of biomarker region (hopanes and steranes) within \(GC\times GC\) image of crude oil pre-spill sample from MW, site of Deepwater Horizon spill disaster, Gulf of Mexico, 2010. b Biomarker region (hopanes and steranes) of (a) marked as the region of interest (ROI), shown as red box within full chromatogram.Target biomarkers within this ROI are labeled and itemized in Table S2. Total number of detected biomarker peaks (target and non-target) = 111, after removing peaks occupying lowest 5 % of the \(GC\times GC\) peak magnitude profile as baseline noise. Range of considered peak summits (highest:lowest) = 14.53:1 (Aeppli et al. [25] Nelson et al. [36])

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