In this section
@article{Chan:2012:10.1111/j.1945-5100.2012.01413.x,
author = {Chan, HS and Martins, Z and Sephton, MA},
doi = {10.1111/j.1945-5100.2012.01413.x},
journal = {Meteoritics & Planetary Science},
pages = {1502--1516},
title = {Amino acid analysis of type 3 chondrites Colony, Ornans, Chainpur and Bishunpur},
url = {http://dx.doi.org/10.1111/j.1945-5100.2012.01413.x},
volume = {47},
year = {2012}
}
TY - JOUR
AB - The CO3s Colony and Ornans and LL3s Chainpur and Bishunpur were analyzed for the first time for amino acids using gas chromatography–mass spectrometry (GC-MS). Type 3 chondrites have relatively unaltered metamorphic and petrological histories. Chainpur was the most amino acid rich of the four type 3 chondrites with a total amino acid abundance of 3330 parts per billion (ppb). The other type 3 chondrites had total amino acid abundances that ranged from 660 to 1110 ppb. A d/l ratio of <0.7 for all proteic amino acids suggests at least some amino acid terrestrial contamination. However, a small fraction of indigenous extraterrestrial amino acids cannot be excluded because of the presence of the nonprotein amino acid α-aminoisobutyric acid (α-AIB), and unusually high relative abundances (to glycine) of β-alanine and γ-ABA. The comparisons between the free and total amino acid contents of the samples also indicate a low free/total amino acid ratio (ranging from about 1:4 in CO chondrites to about 1:50 in Chainpur), which indicate that amino acids are present mainly in the bound form and were made detectable after acid hydrolysis.
AU - Chan,HS
AU - Martins,Z
AU - Sephton,MA
DO - 10.1111/j.1945-5100.2012.01413.x
EP - 1516
PY - 2012///
SN - 1086-9379
SP - 1502
TI - Amino acid analysis of type 3 chondrites Colony, Ornans, Chainpur and Bishunpur
T2 - Meteoritics & Planetary Science
UR - http://dx.doi.org/10.1111/j.1945-5100.2012.01413.x
UR - http://onlinelibrary.wiley.com/doi/10.1111/j.1945-5100.2012.01413.x/abstract
VL - 47
ER -