NDLI: Hydrothermal Stability of Adenine Under Controlled Fugacities of N$_{2}$, CO$_{2}$ and H$

Content Provider	Springer Nature Link
Author	Franiatte, Michael Richard, Laurent Elie, Marcel Nguyen Trung, Chinh Perfetti, Erwan LaRowe, Douglas E.
Copyright Year	2008
Abstract	An experimental study has been carried out on the stability of adenine (one of the five nucleic acid bases) under hydrothermal conditions. The experiments were performed in sealed autoclaves at 300°C under fugacities of CO$_{2}$, N$_{2}$ and H$_{2}$ supposedly representative of those in marine hydrothermal systems on the early Earth. The composition of the gas phase was obtained from the degradation of oxalic acid, sodium nitrite and ammonium chloride, and the oxidation of metallic iron. The results of the experiments indicate that after 200 h, adenine is still present in detectable concentration in the aqueous phase. In fact, the concentration of adenine does not seem to be decreasing after ∼24 h, which suggests that an equilibrium state may have been established with the inorganic constituents of the hydrothermal fluid. Such a conclusion is corroborated by independent thermodynamic calculations.
Starting Page	139
Ending Page	148
Page Count	10
File Format	PDF
ISSN	01696149
Journal	Origins of Life and Evolution of Biospheres
Volume Number	38
Issue Number	2
e-ISSN	15730875
Language	English
Publisher	Springer Netherlands
Publisher Date	2008-02-23
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Adenine Hydrothermal stability Redox conditions Thermodynamics Fugacities Biochemistry Astronomy Geosciences Astrophysics Life Sciences
Content Type	Text
Resource Type	Article
Subject	Medicine Ecology, Evolution, Behavior and Systematics Space and Planetary Science

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