Primordial Radioactivity and Prebiotic Chemical Evolution: Effect of gamma Radiation on Formamide-Based Synthesis

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F20%3A00536901" target="_blank" >RIV/61388955:_____/20:00536901 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/20:10421638 RIV/68407700:21340/20:00345626
Result on the web
<a href="http://hdl.handle.net/11104/0314653" target="_blank" >http://hdl.handle.net/11104/0314653</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.jpcb.0c05233" target="_blank" >10.1021/acs.jpcb.0c05233</a>

Result language
angličtina
Original language name
Primordial Radioactivity and Prebiotic Chemical Evolution: Effect of gamma Radiation on Formamide-Based Synthesis
Original language description
Although the effect of ionizing radiation on prebiotic chemistry is often overlooked, primordial natural radioactivity might have been an important source of energy for various chemical transformations. Estimates of the abundances of short-lived radionuclides on early Earth suggest that the primordial intensity of endogenous terrestrial radioactivity was up to 4 x 10(3) times higher than it is today. Therefore, we assume that chemical substances in contact with radioactive rocks should therefore undergo radiolysis. The calculations are followed by research investigating the influence of ionizing gamma radiation on basic prebiotic substances, including formamide mixed with various clays, which might have played the role of a catalyst and an agent that partially blocked radiation that was potentially destructive for the products. Our explorations of this effect have shown that the irradiation of formamide-clay mixtures at doses of similar to 6 kGy produces significant amounts of urea (up to the maximal concentration of approximately 250 mg L-1), which plays a role in HCN-based prebiotic chemistry.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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