Jorge Villar Susana E, Edwards Howell G M
Area de Geodinámica Interna, Facultad de Humanidades y Educación, Burgos, Spain.
Anal Bioanal Chem. 2006 Jan;384(1):100-13. doi: 10.1007/s00216-005-0029-2.
Raman spectroscopy is proposed as a valuable analytical technique for planetary exploration because it is sensitive to organic and inorganic compounds and able to unambiguously identify key spectral markers in a mixture of biological and geological components; furthermore, sample manipulation is not required and any size of sample can be studied without chemical or mechanical pretreatment. NASA and ESA are considering the adoption of miniaturised Raman spectrometers for inclusion in suites of analytical instrumentation to be placed on robotic landers on Mars in the near future to search for extinct or extant life signals. In this paper we review the advantages and limitations of Raman spectroscopy for the analysis of complex specimens with relevance to the detection of bio- and geomarkers in extremophilic organisms which are considered to be terrestrial analogues of possible extraterrestial life that could have developed on planetary surfaces.
拉曼光谱法被认为是一种用于行星探测的有价值的分析技术，因为它对有机和无机化合物敏感，能够明确识别生物和地质成分混合物中的关键光谱标记；此外，无需对样品进行处理，任何尺寸的样品都可以在不进行化学或机械预处理的情况下进行研究。美国国家航空航天局（NASA）和欧洲航天局（ESA）正在考虑采用小型化拉曼光谱仪，将其纳入分析仪器套件中，以便在不久的将来放置在火星上的机器人着陆器上，以寻找已灭绝或现存的生命信号。在本文中，我们综述了拉曼光谱法分析复杂样本的优缺点，这些样本与检测极端微生物中的生物标记和地质标记相关，极端微生物被认为是可能在行星表面进化的外星生命的地球类似物。
