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Protocol for Future Amino Acid Analyses of Samples Returned by the Stardust MissionWe have demonstrated that LC-ToF-MS coupled with UV fluorescence detection is a powerful tool for the detection of amino acids in meteorite extracts. Using this new analytical technique we were able to identify the extraterrestrial amino acid AIB extracted from fifteen 20 micron sized Murchison meteorite grains. We found that the amino acid contamination levels in Stardust aerogels was much lower than the levels observed in the Murchison meteorite. In addition, the alpha-dialkyl amino acids AIB and isovaline which are the most abundant amino acids in Murchison were not detected in the aerogel above blank levels. We are currently integrating LIF detection capability to our existing nanoflow LC-ToF-MS for enhanced sensitivity required for the analysis of amino acids in Stardust samples.
Document ID
20060021594
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Glavin, D. P.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Doty, J. H., III
(Dematha Catholic High School Hyattsville, MD, United States)
Matrajt, G.
(Washington Univ. Seattle, WA, United States)
Dworkin, J. P.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 23, 2013
Publication Date
March 13, 2006
Subject Category
Astrophysics
Meeting Information
Meeting: Lunar and Planetary Science Conference
Location: Houston, TX
Country: United States
Start Date: March 13, 2006
End Date: March 17, 2006
Distribution Limits
Public
Copyright
Public Use Permitted.
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