Extraterrestrial Amino Acids in Ureilites Including Almahata Sitta
Ureilites are a class of meteorites that lack chondrules (achondrites) but have relatively high carbon abundances, averaging approx.3 wt %. Using highly sensitive liquid chromatography coupled with UV fluorescence and time-of-flight mass spectrometry (LC-FD/ToF-MS), it was recently determined that t...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20110008083 2023-05-15T13:34:40+02:00 Extraterrestrial Amino Acids in Ureilites Including Almahata Sitta Dworkin, J. P. Callahan, M. P. Glavin, D. P. Burton, A. S. Unclassified, Unlimited, Publicly available [2011] application/pdf http://hdl.handle.net/2060/20110008083 unknown Document ID: 20110008083 http://hdl.handle.net/2060/20110008083 No Copyright CASI Space Sciences (General) 2011 ftnasantrs 2018-06-09T22:57:15Z Ureilites are a class of meteorites that lack chondrules (achondrites) but have relatively high carbon abundances, averaging approx.3 wt %. Using highly sensitive liquid chromatography coupled with UV fluorescence and time-of-flight mass spectrometry (LC-FD/ToF-MS), it was recently determined that there are amino acids in. fragment 94 of the Almahata Sitta ureilite[l]. Based on the presence of amino acids that are rare in the Earth's biosphere, as well as the near-racemic enantiomeric ratios of marry of the more common amino acids, it was concluded that most of the detected amino acids were indigenous to the meteorite. Although the composition of the Almahata Sitta ureilite appears to be unlike other recovered ureilites, the discovery of amino acids in this meteorite raises the question of whether other ureilites rnav also contain amino acids. Herein we present the results of LC-FDlTo.F-MS analyses of: a sand sample from the Almahata Sitta strewn held, Almahata Sitta fragments 425 (an ordinary H5 chondrite) and 427 (ureilite), as well as an Antarctic ureilite (Allan lulls, ALHA 77257). Other/Unknown Material Antarc* Antarctic NASA Technical Reports Server (NTRS) Antarctic |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Space Sciences (General) |
spellingShingle |
Space Sciences (General) Dworkin, J. P. Callahan, M. P. Glavin, D. P. Burton, A. S. Extraterrestrial Amino Acids in Ureilites Including Almahata Sitta |
topic_facet |
Space Sciences (General) |
description |
Ureilites are a class of meteorites that lack chondrules (achondrites) but have relatively high carbon abundances, averaging approx.3 wt %. Using highly sensitive liquid chromatography coupled with UV fluorescence and time-of-flight mass spectrometry (LC-FD/ToF-MS), it was recently determined that there are amino acids in. fragment 94 of the Almahata Sitta ureilite[l]. Based on the presence of amino acids that are rare in the Earth's biosphere, as well as the near-racemic enantiomeric ratios of marry of the more common amino acids, it was concluded that most of the detected amino acids were indigenous to the meteorite. Although the composition of the Almahata Sitta ureilite appears to be unlike other recovered ureilites, the discovery of amino acids in this meteorite raises the question of whether other ureilites rnav also contain amino acids. Herein we present the results of LC-FDlTo.F-MS analyses of: a sand sample from the Almahata Sitta strewn held, Almahata Sitta fragments 425 (an ordinary H5 chondrite) and 427 (ureilite), as well as an Antarctic ureilite (Allan lulls, ALHA 77257). |
author |
Dworkin, J. P. Callahan, M. P. Glavin, D. P. Burton, A. S. |
author_facet |
Dworkin, J. P. Callahan, M. P. Glavin, D. P. Burton, A. S. |
author_sort |
Dworkin, J. P. |
title |
Extraterrestrial Amino Acids in Ureilites Including Almahata Sitta |
title_short |
Extraterrestrial Amino Acids in Ureilites Including Almahata Sitta |
title_full |
Extraterrestrial Amino Acids in Ureilites Including Almahata Sitta |
title_fullStr |
Extraterrestrial Amino Acids in Ureilites Including Almahata Sitta |
title_full_unstemmed |
Extraterrestrial Amino Acids in Ureilites Including Almahata Sitta |
title_sort |
extraterrestrial amino acids in ureilites including almahata sitta |
publishDate |
2011 |
url |
http://hdl.handle.net/2060/20110008083 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
CASI |
op_relation |
Document ID: 20110008083 http://hdl.handle.net/2060/20110008083 |
op_rights |
No Copyright |
_version_ |
1766055598201241600 |