The Cumberland drill sample from the Sheepbed mudstone in Gale Crater, Mars, revealed the first evidence of an indigenous Martian organic molecule, chlorobenzene, with the Sample Analysis at Mars (SAM) instrument on Curiosity. We created in the laboratory a mineralogical analog of the Cumberland sample (CBA) to aid in the understanding of the precursor organic molecule(s) that led to the detection of chlorobenzene. The CBA was analyzed by visible/near-infrared spectrometry, and the results are in accordance with Mastcam multispectral and the Chemical Camera passive analyses of Cumberland on Mars, demonstrating that the CBA is a relevant analog. CBA aliquots were spiked with 0.5 wt. % of benzoic acid and 1–2 wt. % of magnesium perchlorate and were run in SAM Testbed (TB). The TB evolved gas analysis (EGA) showed similarities with the Cumberland EGA on Mars in terms of the major volatiles H 2 O, CO 2 , and O 2 . The TB gas chromatography mass spectrometr...

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苯甲酸作为火星上检测到的氯苯的首选前体：独特的Cumberland模拟研究的见解

利用火星样品分析（SAM）仪器上的好奇号，从火星大风火山口的羊床泥岩中获得的坎伯兰钻探样品揭示了火星有机分子氯苯的第一个证据。我们在实验室中创建了坎伯兰样品（CBA）的矿物学类似物，以帮助理解导致检测氯苯的前体有机分子。通过可见/近红外光谱法分析了CBA，其结果与Mastcam多光谱法和化学相机对火星上的Cumberland的被动分析一致，表明CBA是相关的类似物。将CBA等分试样加0.5 wt。％的苯甲酸和1-2 wt。％的高氯酸镁，并在SAM测试床（TB）中运行。TB演化气体分析（EGA）在主要挥发物H 2 O，CO 2和O 2方面与火星上的Cumberland EGA相似。TB气相色谱质谱仪