Study of Chemical Processes Initiated by Electrical Discharge in Titan-Related Atmosphere at Laboratory Temperature and Pressure,ACS Earth and Space Chemistry

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Study of Chemical Processes Initiated by Electrical Discharge in Titan-Related Atmosphere at Laboratory Temperature and Pressure
ACS Earth and Space Chemistry ( IF 2.9 ) Pub Date : 2021-02-15 , DOI: 10.1021/acsearthspacechem.0c00308
Stanislav Chudják ₁ , Zdenka Kozáková ₁ , František Krčma ₁

Affiliation

The chemical processes initiated by electrical discharges in prebiotic atmospheres became a hot topic during the past decade due to the recent extensive discovery of exoplanets. The biggest atmospheric data collection is currently available about the atmosphere of the Saturn’s moon Titan that is composed mainly of nitrogen and methane at low surface temperature of about 95 K and pressure of about 1.5 atm. The present work deals with the laboratory simulation of the chemical processes initiated by the electrical discharge in the gaseous mixture related to the Titan atmosphere under laboratory conditions. The ongoing chemical processes, the resulting stable products, and their transformation into more complex substances were studied by the in situ mass spectrometry with proton ionization (PTR-MS) of the exhausting gas. The presence of many aliphatic and some aromatic hydrocarbons was confirmed as well as many amino and cyano compounds. The increasing concentration of methane has produced more substances with higher molecular weight and less simple substances that were consumed in the formation of more complex substances.

中文翻译：

在实验室温度和压力下与泰坦有关的大气中由放电引发的化学过程的研究

在过去的十年中，由于最近发现系外行星，由益生元大气中的放电引发的化学过程成为一个热门话题。目前可获得有关土星卫星土卫六大气的最大的大气数据收集，土星的土卫六主要由氮和甲烷组成，地表温度约为95 K，压力约为1.5 atm。本工作涉及在实验室条件下由与泰坦大气有关的气体混合物中的放电所引发的化学过程的实验室模拟。进行中的化学过程，生成的稳定产物以及它们转化为更复杂的物质的方法是通过带排气质子电离（PTR-MS）的原位质谱技术进行的。证实存在许多脂族和一些芳族烃以及许多氨基和氰基化合物。甲烷浓度的增加产生了更多的具有较高分子量的物质，以及较少的简单物质，这些物质在形成更复杂的物质时被消耗。

更新日期：2021-03-18

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