Solid adenine and seawater salts exposed to gamma radiation: An FT-IR and EPR spectroscopy analysis for prebiotic chemistry
Por:
Baú J.P.T., Valezi D.F., Villafañe-Barajas S.A., Colín-García M., Negrón-Mendoza A., Di Mauro E., Zaia D.A.M.
Publicada:
1 ene 2019
Categoría:
Multidisciplinary
Resumen:
Solids of adenine obtained from distilled water and seawater lyophilized solutions were gamma irradiated at a 94.52 kGy dose. Results indicate that pure solid adenine had a low degradation rate, likewise the solid containing seawater salts. However, EPR spectroscopy analysis suggests a high interaction of the radiation with seawater salts, by radical formation in sulfate ions. These outcomes are of interest for prebiotic chemistry, since ions could have played important roles in chemical evolution. In addition, Martian soil is rich in sulphate salts, thus these salts could protected organic molecules being degraded by ?-radiation. © 2019
Filiaciones:
Laboratório de Química Prebiótica, Departamento de Química-CCE, Universidade Estadual de Londrina, Londrina, PR 86051-990, Brazil
Laboratório de Ressonância Paramagnética Eletrônica (LARPE), Departamento de Física-CCE, Universidade Estadual de Londrina, Londrina, PR 86051-990, Brazil
Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Cd. Mx., 04510, Mexico
Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Ciudad Universitaria, Cd. Mx, 04510, Mexico
Univ Estadual Londrina, Dept Quim CCE, Lab Quim Prebiot, BR-86051990 Londrina, PR, Brazil
Univ Estadual Londrina, Dept Fis CCE, Lab Ressonancia Paramagnet Eletron LARPE, BR-86051990 Londrina, PR, Brazil
Univ Nacl Autonoma Mexico, Inst Geol, Ciudad Univ, Cd Mx 04510, Mexico
Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Ciudad Univ, Cd Mx 04510, Mexico
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