New applications of high-resolution analytical methods to study trace organic compounds in extraterrestrial materials

Hiroshi Naraoka, Minako Hashiguchi, Yu Sato, Kenji Hamase

Research output: Contribution to journalReview article

Abstract

Organic compounds are present as complex mixtures in extraterrestrial materials including meteorites, which may have played important roles in the origin of life on the primitive Earth. However, the distribution and formation mechanisms of meteoritic organic compounds are not well understood, because conventional analytical methods have limited resolution and sensitivity to resolve their molecular complexity. In this study, advanced instrumental development and analyses are proposed in order to study the trace organic compounds of extraterrestrial materials: (1) a clean room environment to avoid organic contamination during analysis; (2) high-mass-resolution analysis (up to ~150,000 m/⊿m) coupled with high-performance liquid chromatography (HPLC) in order to determine the elemental composition using exact mass for inferring the chemical structure; (3) superior chromatographic separation using a two-dimensional system in order to determine the structural and optical isomers of amino acids; and (4) in situ organic compound analysis and molecular imaging of the sample surface. This approach revealed a higher complexity of organic compounds with a heterogeneous distribution in meteorites. These new methods can be applied to study the chemical evolution of meteoritic organic compounds as well as the molecular occurrence in very-low-mass extraterrestrial materials such as asteroid-returned samples.

Original languageEnglish
Article number62
JournalLife
Volume9
Issue number3
DOIs
Publication statusPublished - Sep 2019

Fingerprint

Meteoroids
organic compounds
Organic compounds
analytical methods
organic compound
analytical method
Chemical Evolution
Minor Planets
Controlled Environment
Molecular Imaging
high resolution
Complex Mixtures
Meteorites
High Pressure Liquid Chromatography
meteorites
Amino Acids
meteorite
clean rooms
Clean rooms
Molecular imaging

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Biochemistry, Genetics and Molecular Biology(all)
  • Space and Planetary Science
  • Palaeontology

Cite this

New applications of high-resolution analytical methods to study trace organic compounds in extraterrestrial materials. / Naraoka, Hiroshi; Hashiguchi, Minako; Sato, Yu; Hamase, Kenji.

In: Life, Vol. 9, No. 3, 62, 09.2019.

Research output: Contribution to journalReview article

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