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首页> 外文期刊>Planetary and space science >Raman spectra of nitrogen-containing organic compounds obtained in high altitude sites using a portable spectrometer: Possible application for remote robotic Titan studies
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Raman spectra of nitrogen-containing organic compounds obtained in high altitude sites using a portable spectrometer: Possible application for remote robotic Titan studies

机译：使用便携式光谱仪在高海拔地区获得的含氮有机化合物的拉曼光谱：在远程泰坦机器人研究中的可能应用

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摘要

Well-resolved Raman spectra of examples of nitrogen-containing compounds were detected using a portable Raman instrument (Ahura First Defender XL) outdoors at a low temperature of - 15 ℃ at an altitude of 2860 m (Pitztall, Austria). The portable Raman spectrometer tested here is equipped with a 785 nm diode laser and fixed frontal probe. Solid forms of formamide, urea, 3-methylpyridine, aniline, indene, 1-(2-aminoethyl)piperazine, benzofuran and indoline were detected unambiguously under field high-mountain conditions. The main Raman features (strong, medium and partially weak bands) were observed at their correct wavenumber positions (spectral resolution 7-10 cm~(-1)) in the range 200-2000 cm~(-1). The results obtained demonstrate the possibility of applying a miniaturised Raman spectrometer as key instrument for investigating the presence of nitrogen-containing organic compounds and biomolecules under low temperature field conditions. Within the payload designed by ESA and NASA for future missions focusing not only on Mars, Raman spectroscopy will be an important non-destructive analytical tool for the in-situ identification of both organic and inorganic compounds relevant to life detection on planetary surfaces or near sub-surfaces.
机译：使用便携式拉曼仪器（Ahura First Defender XL）在2-15 m的低温-15℃的户外海拔2860 m（奥地利Pitztall）上检测到了含氮化合物实例的良好分辨的拉曼光谱。在此测试的便携式拉曼光谱仪配备了785 nm二极管激光器和固定的正面探头。在野外高山条件下，可明确检测出甲酰胺，尿素，3-甲基吡啶，苯胺，茚，1-（2-氨基乙基）哌嗪，苯并呋喃和二氢吲哚的固体形式。在200-2000 cm〜（-1）范围内正确的波数位置（光谱分辨率7-10 cm〜（-1））处观察到主要的拉曼特征（强，中，部分弱带）。获得的结果表明，有可能应用小型化的拉曼光谱仪作为研究低温现场条件下含氮有机化合物和生物分子存在的关键仪器。在ESA和NASA为未来的任务（不仅着重火星）设计的有效载荷中，拉曼光谱学将是一种重要的非破坏性分析工具，用于就地识别与行星表面或近潜点生命相关的有机和无机化合物-表面。

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