Extended Data Fig. 3: Chromatogram extracted from the pyrolysis–GCMS analysis of the Ogunquit beach sample (OG3).
From: Organic molecules revealed in Mars’s Bagnold Dunes by Curiosity’s derivatization experiment
The two IT flashes: IT 1 and IT 2, are represented by blue arrows at activation times: 0 and 18.3 min, respectively. Bands 4–6 and 8–13 are plotted and correspond to the sum of the ions between the range of given masses (for example, band 4 is the sum of the ions from m/z 45 to 65). The major ion mass fragments of the main chlorohydrocarbons detected have also been extracted to facilitate their identification. The main labeled peaks are: 1) m/z 50: chloromethane, 2) CS2, 3) m/z 84: dichloromethane, 4–5) m/z 90: 1- and 3-chloromethylpropene isomers, 6) m/z 83: trichloromethane, 7) t-BDMS-F, 8) benzene, 9) toluene, 10) TFMA coeluted with Cl-t-BDMS, 11) m/z 112: chlorobenzene, 12) bi-silylated water, and 13) co-elution of all the previous molecules that come out a second time after the second IT flash. SO2 was also detected and co-elutes with chloromethane at 3.2 minutes but is not represented due to the saturation of its peak.
