Fig. 7From: Characterization of the residues in Han Dynasty bronze lamps by pyrolysis–gas chromatography–mass spectrometryTotal ion chromatograms of the archaeological samples. FA fatty acids as their methyl esters, OH-FA hydroxy fatty acids as their methyl esters, AL alcohols as their methyl ethers, HC hydrocarbons, n carbon number, 0 number of double bonds in the moleculeBack to article page