Extended Data Fig. 2: Laboratory CO2 data. | Nature Astronomy

Extended Data Fig. 2: Laboratory CO2 data.

From: Indigenous and exogenous organics and surface–atmosphere cycling inferred from carbon and oxygen isotopes at Gale crater

Extended Data Fig. 2: Laboratory CO2 data.

CO2 profile (isotopologue at m/z 44 or 45) from EGA analyses with laboratory test stands: carbonates (a); oxalates (b); acetates (c); benzoic and mellitic acids (d). The peak temperatures of CO2 evolved from Martian samples by SAM are compared with those from laboratory runs such as these to help identify the mineral phases present. The CaCO3 was the same synthetic material used for SAM flight model calibration.

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