Copy of Raman/LIBS

拉曼/LIBS 的副本

• 批准号: ST/F005687/1
• 负责人: Howell Edwards
• 金额: $ 13.52万
• 依托单位: University of Bradford
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2008
• 资助国家: 英国
• 起止时间: 2008 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FF005687%2F1
• 关键词: Copy; Raman; LIBS

Raman spectroscopy has been demonstrated to be a viable non-destructive technique for the analytical interrogation of geological scenarios for life / detection signatures based on the presence of characteristic biochemicals produced by extremophilic organisms for their survival in hostile environments. The interaction between organisms and their environment is critical to survival and evidence for extant, and importantly, extinct lifeforms may be surmised from unambiguous identification of biological and geological markers in the geological record. The recent announcement of the acceptance of a combined Raman/LIBS instrument for the ExoMars programme by ESA is a major step forward in the broadening of the life-detection instrumentation portfolio for the proposed lander/rover and it is necessary now to construct and evaluate a prototype miniaturised instrument for testing in a range of terrestrial Mars analogue situations. At the University of Bradford, Professor Howell Edwards and his group have been studying the Raman spectra of extremophiles from Mars analogue sites for many years and have built up expertise in the recognition of biomolecular signatures obtained under a wide range of experimental conditions. The group has instigated a collection of key samples from a diverse range of terrestrial scenarios considered to be 'Mars analogues'. These studies have initiated, through identification of biomolecular Raman spectral marker bands in the presence of geological mineral host matrices, the preparation of a database of reference spectra for direct recognition of extinct and extant organisms in complex systems. The Bradford Group is identified as a key contributor to the international Raman/LIBS instrument science working team led by Prof. Fernando Rull (University of Valladoid) and will be leading the Raman/LIBS Biomarker programme.

拉曼光谱已被证明是一种可行的非破坏性技术，用于分析询问地质情景的生命/检测特征，其基于极端生物体在恶劣环境中生存所产生的特征生物化学物质的存在。生物与其环境之间的相互作用对生存和现存证据至关重要，重要的是，灭绝的生命形式可以从地质记录中明确的生物和地质标志中推测出来。欧空局最近宣布接受ExoMars方案的组合式拉曼/LIBS仪器，这是在扩大拟议着陆器/流动站生命探测仪器组合方面向前迈出的重要一步，现在有必要建造和评价一个原型的激光散射仪器，用于在一系列火星地面模拟情况下进行测试。在布拉德福德大学，豪厄尔·爱德华兹教授和他的小组多年来一直在研究来自火星模拟地点的极端微生物的拉曼光谱，并积累了识别在各种实验条件下获得的生物分子特征的专业知识。该小组已经从被认为是“火星模拟”的各种陆地场景中收集了关键样本。这些研究已经开始，通过识别生物分子的拉曼光谱标记带的存在下，地质矿物的主机矩阵，准备一个数据库的参考光谱直接识别灭绝和现存的生物在复杂的系统。布拉德福德集团被确定为由Fernando Rull教授（巴利亚多利德大学）领导的国际拉曼/LIBS仪器科学工作小组的主要贡献者，并将领导拉曼/LIBS生物标志物计划。