Table 1.
Concentrations (nmol/g) and δ13C values of aldehydes and ketones identified in the Murchison meteorite.
| Abundance (nmol/g) | ||||
|---|---|---|---|---|
| Peak label | Compound | This studya (± S.D.b) | Pizzarello and Holmes (2009) | δ13C (‰) |
| Aldehydes | ||||
| 1 | Formaldehydec | 19.2 ± 2.8 | 10.0 | +66.4 ± 3.2 |
| 2 | (E)-Acetaldehydec | 273.4 ± 48.7 | 24.0 | +25.7 ± 0.9 |
| 3 | (Z)-Acetaldehyde | +27.0 ± 0.9 | ||
| 5 | (E)-Propionaldehydec | 149.8 ± 22.8 | 23.5 | n.d. |
| 6 | (Z)-Propionaldehyde | +41.8 ± 1.3 | ||
| 9 | (E)-Butyraldehydec | 42.2 ± 6.6 | 32.2 | +20.3 ± 1.3 |
| 10 | (Z)-Butyraldehyde | n.d | ||
| 16 | (E)-Benzaldehyde | n.d. | 7.6 | n.d. |
| 17 | (Z)-Benzaldehyde | n.d. | ||
| Ketones | ||||
| 4 | Acetone | 87.5 ± 15.4 | 47.3 | +11.8 ± 1.5 |
| 7 | (E)-2-Butanone | 36.0 ± 5.7 | 6.9 | n.d. |
| 8 | (Z)-2-Butanonec | −10.0 ± 1.2 | ||
| 11 | (E)-2-Pentanone | 12.3 ± 1.8 | 1.5 | n.d. |
| 12 | (Z)-2-Pentanone | n.d. | ||
| 13 | (E)-2-Hexanone | 3.5 ± 0.9 | 25.0 | n.d. |
| 14 | (Z)-2-Hexanone | n.d. | ||
| 15 | (E)-Acetophenone | 1.9 ± 0.6 | n.d. | n.d. |
| 18 | (Z)-Acetophenone | n.d. | ||
| Total abundance | 626.2 ± 105.3 | 200 | ||
a
Abundances represent the sun of the two (E) and (Z) isomers, where applicable.
b
S.D. – Standard deviation of three sequential injections.
c
Partially co-eluting with an unidentified compound
n.d. – not determined