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Title: Radiolysis of alanine adsorbed in a clay mineral

Abstract

Optical activity in molecules is a chemical characteristic of living beings. In this work, we examine the hypothesis of the influence of different mineral surfaces on the development of a specific chirality in organic molecules when subjected to conditions simulating the primitive Earth during the period of chemical evolution. By using X-ray diffraction techniques and HPLC/ELSD to analyze aqueous suspensions of amino acids adsorbed on minerals irradiated in different doses with a cobalt-60 gamma source, the experiments attempt to prove the hypothesis that some solid surfaces (like clays and meteorite rocks) may have a concentration capacity and protective role against external sources of ionizing radiation (specifically {gamma}-ray) for some organic compounds (like some amino acids) adsorbed on them. Preliminary results show a slight difference in the adsorption and radiolysis of the D-and L-alanine.

Authors:
;  [1]
  1. Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico (UNAM), Circuito Exterior s/n, Ciudad Universitaria, Apartado Postal 70-543, Deleg. Coyoacan, C.P. 04510 (Mexico)
Publication Date:
OSTI Identifier:
22121599
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1544; Journal Issue: 1; Conference: 9. international symposium on radiation physics, Puebla (Mexico), 14-17 Apr 2013; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
38 RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY; 36 MATERIALS SCIENCE; ADSORPTION; ALANINE-L; CHIRALITY; CLAYS; COBALT 60; GAMMA RADIATION; GAMMA SOURCES; HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY; IRRADIATION; MOLECULES; OPTICAL ACTIVITY; RADIATION DOSES; RADIOLYSIS; X-RAY DIFFRACTION

Citation Formats

Aguilar-Ovando, Ellen Y., and Negron-Mendoza, Alicia. Radiolysis of alanine adsorbed in a clay mineral. United States: N. p., 2013. Web. doi:10.1063/1.4813453.
Aguilar-Ovando, Ellen Y., & Negron-Mendoza, Alicia. Radiolysis of alanine adsorbed in a clay mineral. United States. https://doi.org/10.1063/1.4813453
Aguilar-Ovando, Ellen Y., and Negron-Mendoza, Alicia. 2013. "Radiolysis of alanine adsorbed in a clay mineral". United States. https://doi.org/10.1063/1.4813453.
@article{osti_22121599,
title = {Radiolysis of alanine adsorbed in a clay mineral},
author = {Aguilar-Ovando, Ellen Y. and Negron-Mendoza, Alicia},
abstractNote = {Optical activity in molecules is a chemical characteristic of living beings. In this work, we examine the hypothesis of the influence of different mineral surfaces on the development of a specific chirality in organic molecules when subjected to conditions simulating the primitive Earth during the period of chemical evolution. By using X-ray diffraction techniques and HPLC/ELSD to analyze aqueous suspensions of amino acids adsorbed on minerals irradiated in different doses with a cobalt-60 gamma source, the experiments attempt to prove the hypothesis that some solid surfaces (like clays and meteorite rocks) may have a concentration capacity and protective role against external sources of ionizing radiation (specifically {gamma}-ray) for some organic compounds (like some amino acids) adsorbed on them. Preliminary results show a slight difference in the adsorption and radiolysis of the D-and L-alanine.},
doi = {10.1063/1.4813453},
url = {https://www.osti.gov/biblio/22121599}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1544,
place = {United States},
year = {Wed Jul 03 00:00:00 EDT 2013},
month = {Wed Jul 03 00:00:00 EDT 2013}
}