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首页> 外文期刊>Journal of Nuclear Physics, Material Sciences, Radiation and Applications >Radiolysis of the Glycolaldehyde-Na+Montmorillonite and Glycolaldehyde-Fe3+Montmorillonite Systems in Aqueous Suspension under Gamma Radiation Fields:       Implications in Chemical Evolution
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Radiolysis of the Glycolaldehyde-Na+Montmorillonite and Glycolaldehyde-Fe3+Montmorillonite Systems in Aqueous Suspension under Gamma Radiation Fields:       Implications in Chemical Evolution

机译：γ辐射场在水中悬浮液中乙醇醛-Na +蒙脱石和乙二醇醛-Fe3 +蒙脱石体系的辐射分解：化学进化的意义

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The stability and reactivity of organic molecules with biological and pre-biological significance in primitive conditions are of paramount importance in chemical evolution studies. Sugars are an essential component in biological systems for the different roles that they play in living beings. The objective of the present work is to study the gamma radiolysis of aqueous solutions of glycolaldehyde, the simplest sugar and aqueous suspensions of glycolaldehyde- Na+-montmorillonite and glycolaldehyde-Fe3+Montmorillonite. Our results indicate that the radiolysis of the aqueous solutions of glycolaldehyde (0.03M), oxygen free, mainly produce the linear dimer known as eritriol (122 g/mol) and a sugar-like compound with six carbon atoms (180 g/mol). The experiments with the clay suspensions show that clays can adsorb glycolaldehyde and protect it from gamma irradiation. Additionally, it was observed that depending on the cation present in the clay, the percentage and the product (monomer or cyclic dimer) adsorption was different. In the case of Fe3+ Montmorillonite, this clay catalyzed the decomposition of glycolaldehyde, forming small amounts nonidentified products. The analysis of these systems was performed by ATRFTIR, UV spectroscopy, liquid chromatography (UHPLC-UV), and HPLC coupled to a mass spectrometry.
机译：在原始条件下具有生物学和生物学前意义的有机分子的稳定性和反应性在化学进化研究中至关重要。糖是生物系统中不可或缺的组成部分，因为它们在生物中扮演着不同的角色。本研究的目的是研究乙醇醛水溶液，最简单的糖以及乙醇醛-Na + -蒙脱石和乙醇醛-Fe 3 + 蒙脱石。我们的结果表明，乙醇醛（0.03M）的水溶液无氧分解，主要产生线性二聚体，被称为eritriol（122 g / mol）和具有六个碳原子的糖状化合物（180 g / mol）。 。用粘土悬浮液进行的实验表明，粘土可以吸附乙醇醛并保护其免受伽马射线的照射。另外，观察到，取决于粘土中存在的阳离子，百分数和产物（单体或环状二聚体）的吸附是不同的。在Fe 3 + 蒙脱石的情况下，这种粘土催化了乙醇醛的分解，形成了少量未鉴定的产物。这些系统的分析通过ATRFTIR，UV光谱，液相色谱（UHPLC-UV）和HPLC联用质谱进行。

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