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Integrated MDGC-GC×GC analysis of Agarwood (A. malaccensis) oxygenated terpenes. GC-FID 1D chromatogram (Ai) and the expansion of the target region (Aii) to be heart-cut. MDGC chromatograms showing the heart-cut (H/C) region in the 2D TOFMS detection (Bi) and 1D FID detection (Bii). GC×GC-TOFMS chromatogram (C) showing the comprehensive separation of the target region. Source: adapted with permission from Yan et al. [12].
