Fig. 1.

Temperature-dependent pyrolysis of six common tattoo pigments. Degradation of pigments is indicated by carbonization of the test tubes (a) and the increase in cleavage products (b). The onsets of decoloration and carbonization were indicated with dashed and solid lines, respectively. b Non-quantitative increases in pyrolysis products are displayed as extracted molecular mass of each fragment normalized to the total chromatogram area. 426 m/z, 2-(8-aminoquinolin-2-yl)-4,5,6,7-tetrachloro-3-hydroxy-1H-inden-1-one; ADC, 2-amino-9-oxo-dihydroacridine-3-carbaldehyde; DMPP, 2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one; HCN, hydrogen cyanide; TIF, 4,5,6,7-tetrachloro-1,3-isobenzofuradione