6:15 PM - 7:30 PM
[BCG28-P02] Shock-induced Strecker Reactions for prebiotic amino acid formation: Experimental simulations
In this study, we carried out shock recovery experiments using a propellant gun for aqueous solutions of ammonium formate and formamide. Starting material, encapsulated in steel container as a target, was ammonium formate or formamide aqueous solution immersed in the pressed olivine powder. We used two concentrations (5 mM and 100 mM) to compare with the results of hydrothermal experiments. Olivine was simulated as ordinary chondrite. The peak pressure in this study was about 5 GPa. Recovered solutions were analyzed by using hybrid/MS for biomolecules of the m/z values between 50 and 500 with analytical errors within 3 mmu (0.003). The results indicated that glycine and glycylglycine were detected in all samples and that benzoic acid as carboxylic acid was detected in only formamide samples. Present results suggest that glycine formation by shock reaction might be more effective than that of hydrothermal reaction because glycine was formed from low concentration samples. Detailed discussions will be given as poster.