Reference materials for stable isotope analysis
Carbon
Table:
Table 3: Carbon Isotope Reference Materials

Name

Material

δ13C

Standard

deviation

Reference

Link

IAEA-603

CaCO3

2.46‰

0.01‰

VPDB

Link

NBS-18

CaCO3

-5.014‰

0.035‰

VPDB

Link

NBS-19

CaCO3

1.95‰

-

VPDB

Link

LSVEC

Li2CO3

-46.6‰

0.2‰

VPDB

Link

IAEA-CO-1

Carrara marble

+2.492‰

0.030‰

VPDB

Link

IAEA-CO-8

CaCO3

-5.764‰

0.032‰

VPDB

Link

IAEA-CO-9

BaCO3

-47.321‰

0.057‰

VPDB

Link

NBS 22

Oil

-30.031‰

0.043‰

VPDB

Link

Having looked at the table that covers 'Reference materials for stable isotope analysis' — "Carbon" section, write a one-sentence description of the highlighted cells and format it within the following JSON object {"answer": "YOUR ANSWER"}.