Effect of Temperature on the Adsorption of Adenine

Details Effect of Temperature on the Adsorption of Adenine Effect of Temperature on the Adsorption of Adenine

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001asbio...1..481s&link_type=abstract

Astrobiology, Volume 1, Issue 4, pp. 481-487.

Other

11

Abiotic, Hydrothermal, Origin Of Life, Mineral, Template

Scientific paper

Equilibrium adsorption isotherms for the purine base adenine on the surface of graphite crystals have been obtained at 30, 40, 50, and 60°C by frontal analysis using water as a mobile phase. These data were fitted to the Langmuir isotherm model and interpreted in terms of the well-characterized adsorbate monolayer structure. A van't Hoff plot was used to estimate the adsorption enthalpy, -ΔH°, which we determined to be 20 kJ mol-1. The susceptibility of nucleic acid bases to aqueous-phase hydrolysis may have been a limiting feature for their inclusion in the primordial genetic architecture; our results suggest that the effects of temperature and the presence of inorganic solids must also be included when assessing the prebiotic availability of adenine.

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