Abstract
A combination of geochemical variables is necessary to explain the origin of life on Earth. Thus, in this work the sorption of Poly-A on a clay mineral (kaolinite) was studied to get an insight about the sorption capacity at different times and pH values, as well as to confirm the capabilities of the clay to protect the sorbate from an external source of ionizing radiation. Poly-A presented a high percentage of sorption in the clay, especially in acidic environments, and this percentage sharply decrease in alkaline media. On the other hand, Poly-A’s recovery was higher in the system with clay, confirming its protection role.
References
A. Negrón-Mendoza, S. Ramos-Bernal, M. Colin-García and A. Heredia, Radiation & applications 1, 159 (2016). https://doi.org/10.21175/RadJ.2016.03.030
A. I. Oparin, The origin of life (MacMillan, New York, 1924), p. 109.
S. Chang and N. Lahav, J. Mol. Evol. 8, 357 (1976). https://doi.org/10.1007/BF01739261
J. D. Bernal, The Physical Basis of Life (Routledge y Kegan Paul, London, 1951), p. 364.
W. Gilbert, Nature 319, 618 (1986). https://doi.org/10.1038/319618a0
P. G. Higgs and N. Lehman, Nat. Rev. Genet. 16, 1 (2015). https://doi.org/10.1038/nrg3841
S. Woodson and S. Mount, in The RNA world, edited by R. F. Gesteland, T. R. Cech and J. F. Atkins (Cold Spring Harbor Laboratory Press, USA, 1999), p. 709. https://doi.org/10.1101/cshperspect.a006742
H. Hashizume, Clay Minerals in Nature (Intech Open, London, 2012), p. 197.
H. H. Murray, M. S. Prasad and K. J. Reid, Appl. Clay Sci. 6, 87 (1991). https://doi.org/10.1016/0169-1317(91)90001-P
L. López-Esquivel, A. Negrón-Mendoza, F. Mosqueira and S. Ramos-Bernal, Nucl. Instrum. Meth. A 619, 1 (2010).
J. Ramírez-Carreón, S. Ramos-Bernal and A. Negrón-Mendoza, J Radioanal. Nucl. Chem. 318, 2435 (2018). https://doi.org/10.1007/s10967-018-6264-8
N. Palomino-Aquino and A. Negrón-Mendoza, AIP Publishing 1671, 030007 (2015). https://doi.org/10.1063/1.4927196
L. D. Perezgasga, F. G. Mosqueira, A. Negrón-Mendoza, L. De Pablo-Galán and A. Serrato-Díaz, Orig. Life Evol. Biospheres 35, 91 (2005). https://doi.org/10.1007/s11084-005-0199-0
M. M. Mortland, Advances in Agronomy 22, 75 (1970). https://doi.org/10.1016/S0065-2113(08)60266-7
D. Tunega, G. Haberhauer, M. H. Gerzabek, H. Lischka, Langmuir 181, 139 (2002). https://doi.org/10.1021/la010914e
Negrón-Mendoza and S. Ramos-Bernal, The role of clays in the origin of life. Origins: genesis, evolution and diversity of life (Kluwer Academic Publishers, USA, 2004), 181–194.
E. T. Degens, G. R. Harvey and K. Mopper, Chemical Geology 9, 1 (1972). https://doi.org/10.1016/0009-2541(72)90038-1