Division of Chemical and Forensic Sciences, University Analytical Centre, School of Life Sciences, University of Bradford, Bradford BD7 1DP, UK.
Spectrochim Acta A Mol Biomol Spectrosc. 2011 Jan;78(1):191-5. doi: 10.1016/j.saa.2010.09.020. Epub 2010 Sep 17.
The aim of this work is to investigate the viability and potential of three groups of organic compounds as biomarkers in a future robotic analytical exploration of Mars. The three compounds have been identified as suitable candidates for potential biomarkers for extant or extinct life from the terrestrial fossil record. The three groups of compound were all similar in structure, being either tetra- or penta-cyclic compounds. The limits of detection for a sample were also tested to estimate what concentrations it would still be amenable to Raman spectroscopic investigation. This was investigated using both solid mixtures and liquid solutions. The spectra of these compounds are characterised so that they can be added to the Raman database for future Mars missions. This involved identifying functional group characteristics, assigning peaks for each individual sample and characteristic features which would categorise the samples.
本工作旨在研究三组有机化合物作为未来火星机器人分析探测中生物标记物的可行性和潜力。这三种化合物已被确定为从地球化石记录中寻找现存或已灭绝生命的潜在生物标记物的合适候选物。这三组化合物在结构上都相似，要么是四环或五环化合物。还测试了样品的检测极限，以估计其仍然适合拉曼光谱研究的浓度。这是通过使用固体混合物和液体溶液来进行研究的。对这些化合物的光谱进行了特征化处理，以便将其添加到未来火星任务的拉曼数据库中。这涉及到确定官能团特征，为每个单独的样品分配峰，并确定样品分类的特征。
