Table 1 Intramolecular isotopic signatures and equilibrium fractionation factors.

From: The deuterium/hydrogen distribution in chondritic organic matter attests to early ionizing irradiation

 

δ D Benz

δ D Aliph

δ D Arom

α Benz-Arom

α Aliph-Arom

This study

1,192±173

463±113

81±128

2.03±0.29

1.35±0.19

Remusat et al.9

1,250±50

550±50

150±50

1.96±0.05

1.35±0.05

Robert et al.24

   

1.99±0.38

1.22±0.39

  1. This table provides experimental isotopic signatures for benzilic (δDBenz), aliphatic (δDAliph) and aromatic (δDArom) C–H functional groups determined from the irradiated samples. Derived equilibrium fractionation factors between these groups are also reported (αBenz-Arom and αAliph-Arom). Measurements on the Orgueil (CI) chondrite9 and results of the experimental exchange experiments24 are reproduced for comparison.
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