Table 1 Abundance of benzene polycarboxylic acids (BPCAs) molecular markers and total inferred polycyclic aromatics in the Chang’E 5 lunar soil samples

From: Polycyclic aromatics in the Chang’E 5 lunar soils

Lunar soil sample

Abundance (µg C/g)

 

B6CA

B5CA

B4CAs

B3CAs

B2CAs

Total BPCAs

polycyclic aromatics

CE5-B1S1

0.73

0.34

0.02

0.06

0.03

1.18

6.73 ± 1.68

CE5-B1S2

1.08

0.41

0.03

0.07

0.03

1.62

9.23 ± 2.31

CE5-B1S3

0.90

0.34

0.02

0.04

0.02

1.33

7.57 ± 1.89

CE5-B2S1

0.91

0.39

0.02

0.06

0.02

1.40

7.98 ± 2.00

CE5-B2S2

0.92

0.34

0.02

0.06

0.01

1.36

7.73 ± 1.93

CE5-B2S3

0.44

0.34

0.02

0.05

0.01

0.87

4.95 ± 1.24

  1. B6CA and B5CA were mellitic and benzenepentacarboxylic acids, respectively. B4CAs include prehnitic, mellophanic and pyromellitic acids (1,2,3,4-B4CA, 1,2,3,5-B4CA and 1,2,4,5-B4CA); B3CAs include trimellitic, hemimellitic and 5-nitro-1,2,3-benzenetricarboxylic acids (1,2,4-B3CA and 1,2,3-B3CA and 5-NO2-1,2,3-B3CA); B2CAs include phthalic and 3-nitrophthalic acids (1,2-B2CA and 3-NO2-1,2-B2CA). The uncertainties in the abundance of polycyclic aromatics were calculated by applying a 25% error to the conversion factor (5.7) between total BPCA carbon and polycyclic aromatics (see “Methods”)15,16. Triplicates from the first batch of lunar soil samples are labeled as CE5-B1S1, CE5-B1S2 and CE5-B1S3, while those from the second batch are labeled as CE5-B2S1, CE5-B2S2 and CE5-B2S3.
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