概括
富勒,包括C60) 和C70),在俄罗斯的古老的前坎布里亚岩石中被发现. 先进的显微镜和质谱学证实了它们的地质起源和自然同位素比.
科学领域:
- 地质化学 地质化学
- 材料科学 材料科学 材料科学
- 天体生物学 天体生物学
背景情况:
- 富勒烯是碳的异构体,具有独特的分子结构.
- 它们在地质构造中的存在可以表明特定的碳沉积环境或外星起源.
研究的目的:
- 在古代地质样本中调查富勒的存在和起源.
- 为了确认在前坎布里亚纪岩层中发现的富勒伦的真实性.
主要方法:
- 高分辨率传输电子显微镜 (HRTEM) 用于结构分析.
- 用激光和热溶解进行里叶变换质谱法 (FTMS) 进行分子识别.
- 对碳-13与碳-12的同位素比率分析.
主要成果:
- 在俄罗斯的富含碳的前坎布里亚纪岩石中发现了C(60) 和C(70) 富勒伦.
- 质谱测试证实,富勒伦是本土的样本,而不是分析的文物.
- 测量到的C60) 和C70) 的同位素比值都在正常的陆地范围之内.
结论:
- 这项研究提供了证据,证明烯在前坎布里亚时期的地质样本中自然存在.
- 这些发现支持在古代地球或外星环境中完全保存的可能性.
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