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Extracting organic matter on Mars: A comparison of Methods involving subcritical water, surfactant solutions and organic solvents

机译:在火星上提取有机物:亚临界水,表面活性剂溶液和有机溶剂的方法比较

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摘要

The first step in many life detection protocols on Mars involves attempts to extract or isolate organic matter from its mineral matrix. A number of extraction options are available and include heat and solvent assisted methods. Recent operations on Mars indicate that heating samples can cause the loss or obfuscation of organic signals from target materials, raising the importance of solvent-based systems for future missions. Several solvent types are available (e.g. organic solvents, surfactant based solvents and subcritical water extraction) but a comparison of their efficiencies in Mars relevant materials is missing. We have spiked the well characterised Mars analogue material JSC Mars-1 with a number of representative organic standards. Extraction of the spiked JSC Mars-1 with the three solvent methods provides insights into the relative efficiency of these methods and indicates how they may be used on future Mars missions. (C) 2014 Elsevier Ltd. All rights reserved.
机译:火星上许多生命探测协议的第一步涉及尝试从其矿物基质中提取或分离有机物。有多种提取方法可供选择,包括加热和溶剂辅助方法。火星上的最新操作表明,加热样品会导致目标材料中有机信号的损失或混淆,这增加了溶剂型系统对未来任务的重要性。可以使用几种溶剂类型(例如,有机溶剂,基于表面活性剂的溶剂和亚临界水萃取),但缺少与火星相关材料的效率比较。我们用许多具有代表性的有机标准物添加了特征鲜明的火星模拟材料JSC Mars-1。使用三种溶剂方法提取加标的JSC Mars-1,可以深入了解这些方法的相对效率,并指出如何将其用于未来的Mars任务。 (C)2014 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Planetary and space science》 |2014年第9期|19-27|共9页
  • 作者单位

    Univ London Imperial Coll Sci Technol & Med, Dept Earth Sci & Engn, Impacts & Astromat Res Ctr, London SW7 2AZ, England;

    Univ London Imperial Coll Sci Technol & Med, Dept Earth Sci & Engn, Impacts & Astromat Res Ctr, London SW7 2AZ, England;

    Univ Leicester, Dept Phys & Astron, Space Res Ctr, Leicester LE1 7RH, Leics, England;

    Cranfield Univ, Cranfield Hlth, Cranfield MK43 0AL, Beds, England;

    Univ London Imperial Coll Sci Technol & Med, Dept Earth Sci & Engn, Impacts & Astromat Res Ctr, London SW7 2AZ, England;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Subcritical water; Organic solvent; Surfactant extraction; Mars; Biomarkers; Extraction;

    机译:亚临界水;有机溶剂;表面活性剂萃取;火星;生物标志物;提取;

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