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Earth, Planets and Space
Fig. 3 | Earth, Planets and Space

Fig. 3

From: Amino acid compositions in heated carbonaceous chondrites and their compound-specific nitrogen isotopic ratios

Fig. 3

GC/C/IRMS chromatograms of CI1 Y-980115 and CO3 ALHA77003. GC/C/IRMS chromatograms of the 12 M HCl-hydrolyzed hot-water extracts of the Piv/iPr amino acid esters in a CI1 Y-980115 and b CO3 ALHA77003. The peaks were identified by comparing the retention time to peaks of the amino acid standard mixture. The δ15N values are indicated on the chromatograms with the corresponding peak heights (mV) shown in parentheses. Abbreviations: Gly - glycine, Ala - alanine

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