Figure
- Extraterrestrial amino acids in Orgueil and Ivuna: Tracing the parent body of CI type carbonaceous chondrites

Fig. 1. The 0- to 53-min region of the HPLC chromatograms (no peaks were observed outside this time period). o-phthaldialdehyde/N-acetyl-L-cysteine derivatization (15 min) of amino acids in the 6 M HCl-hydrolyzed, hot-water extracts from the CI carbonaceous chondrites Orgueil and Ivuna, the CM chondrites Murchison and Murray, and the serpentine and procedural blanks are shown. The conditions for amino acid separations for the mobile phase at 25°C were as follows: flow rate, 1 ml/min; buffer A (50 mM sodium acetate) at pH 8.0, buffer B (methanol-optima grade); gradient, 0 to 4 min, 0% buffer B; 4 to 24 min, 0 to 30% buffer B; 24 to 54 min, 30 to 40% buffer B. Peaks were identified as follows: 1, D-aspartic acid; 2, L-aspartic acid; 3, L-glutamic acid; 4, D-glutamic acid; 5, DL-serine; 6, glycine; 7, $beta$ -alanine; 8, $gamma$ -ABA; 9, DL- $beta$ -AIB; 10, D-alanine; 11, L-alanine; 12, DL- $beta$ -ABA; 13, AIB; 14, D, L- $alpha$ -ABA; 15, DL-isovaline; 16, L-valine; 17, D-valine; and X, unknown.

Extraterrestrial%20f01.gif

Table

References

Go to page: 1 2 3 4 5 6 7 8

rating: 0.00 from 0 votes | updated on: 25 Oct 2008 | views: 3536 |

share this article | email to friends

suggest a revision
print this page
print the whole article

Rate article:

Science Network - Braintrack.com - University Directory | Chemicool.com - Chemistry

Login

Search

Figure - Extraterrestrial amino acids in Orgueil and Ivuna: Tracing the parent body of CI type carbonaceous chondrites

Figure
- Extraterrestrial amino acids in Orgueil and Ivuna: Tracing the parent body of CI type carbonaceous chondrites