Gamma irradiation of adenine and guanine adsorbed into hectorite and attapulgite
A. Meléndez-López,
J. Cruz-Castañeda,
A. Negrón-Mendoza,
S. Ramos-Bernal,
A. Heredia,
L.G. Castro-Sanpedro,
D. Aguilar-Flores
Affiliations
A. Meléndez-López
Instituto de Ciencias Nucleares, Circuito Exterior s/n, Ciudad Universitaria, Col. Universidad Nacional Autónoma de México, Deleg. Coyoacán, Apartado Postal 70-543, C.P. 04510, CDMX, Mexico; Corresponding author.
J. Cruz-Castañeda
Instituto de Ciencias Nucleares, Circuito Exterior s/n, Ciudad Universitaria, Col. Universidad Nacional Autónoma de México, Deleg. Coyoacán, Apartado Postal 70-543, C.P. 04510, CDMX, Mexico
A. Negrón-Mendoza
Instituto de Ciencias Nucleares, Circuito Exterior s/n, Ciudad Universitaria, Col. Universidad Nacional Autónoma de México, Deleg. Coyoacán, Apartado Postal 70-543, C.P. 04510, CDMX, Mexico
S. Ramos-Bernal
Instituto de Ciencias Nucleares, Circuito Exterior s/n, Ciudad Universitaria, Col. Universidad Nacional Autónoma de México, Deleg. Coyoacán, Apartado Postal 70-543, C.P. 04510, CDMX, Mexico
A. Heredia
Instituto de Ciencias Nucleares, Circuito Exterior s/n, Ciudad Universitaria, Col. Universidad Nacional Autónoma de México, Deleg. Coyoacán, Apartado Postal 70-543, C.P. 04510, CDMX, Mexico
L.G. Castro-Sanpedro
Facultad de Estudios Superiores Zaragoza Campus 2. Batalla 5 de Mayo s/n, Ejército de Oriente Zona Peñón, Iztapalapa, 09230, CDMX, Mexico
D. Aguilar-Flores
Facultad de Estudios Superiores Zaragoza Campus 2. Batalla 5 de Mayo s/n, Ejército de Oriente Zona Peñón, Iztapalapa, 09230, CDMX, Mexico
This study focuses on the radiolysis (up to 36 kGy) of guanine and adenine (nitrogenous bases) adsorbed in hectorite and attapulgite to highlight the potential role of clays as protective agents against ionizing radiation in prebiotic processes. In this framework, the study investigated the nitrogenous bases’ behavior in two types of systems: a) aqueous suspension of adenine–clay systems and b) guanine–clay systems in the solid state. This research utilized spectroscopic and chromatographic techniques for its analytical purposes. Regardless of the reaction medium conditions, the results reveal that nitrogenous bases are stable under ionizing irradiation when adsorbed on both clays.
