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首页> 外文期刊>Journal of Nuclear Physics, Material Sciences, Radiation and Applications >Stability of Glycine in Saline Solutions Exposed to Ionizing Radiation
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Stability of Glycine in Saline Solutions Exposed to Ionizing Radiation

机译：甘氨酸在盐溶液中的电离辐射稳定性

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The stability of biologically important molecules, such as amino acids, being subjected to highradiation fields is relevant for chemical evolution studies. Bodies of water were very important in the primitive Earth. In these bodies, the presence of dissolved salts, together with organic molecules, could influence the behavior of the systems in prebiotic environments.The objective of this work is to examine the influence of sodium chloride on the stability of the amino acid glycine when subjected to high radiation doses. The analysis of the irradiated samples was followed by HPLC coupled with a UV-VIS detector. The results show that glycine in aqueous solutions (without oxygen) decomposed around 90% at a dose of 91 kGy. In the presence of salts, up to 80% of the amino acid was recovered at the same dose. Laboratory simulations demonstrate a protective role for sodium chloride (specifically the chloride ion) to glycine against an external source of ionizing radiation.
机译：生物重要分子（例如氨基酸）经受高辐射场的稳定性与化学进化研究有关。水体在原始地球上非常重要。在这些身体中，溶解的盐以及有机分子的存在可能会影响益生元环境中系统的行为。这项工作的目的是检验氯化钠对氨基酸溶液中甘氨酸氨基酸稳定性的影响。高辐射剂量。用HPLC和UV-VIS检测器对辐照后的样品进行分析。结果表明，在91 kGy剂量下，水溶液（无氧）中的甘氨酸分解了约90％。在盐的存在下，以相同的剂量可回收多达80％的氨基酸。实验室模拟表明，氯化钠（特别是氯离子）对甘氨酸具有抵抗外部电离辐射的保护作用。

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