Exchange of Dual Clumped Isotopes of CO₂ With the Phosphoric Acid-Water System.

ABSTRACT:

Rationale

The reaction of carbonate materials with phosphoric acid is a standard method for extracting CO₂, not only for the subsequent analysis of the ratios of ¹³C/¹²C and ¹⁸O/¹⁶O but also for the ratios of ¹³C¹⁸O¹⁶O/¹²C¹⁶O¹⁶O and ¹²C¹⁸O¹⁸O/¹²C¹⁶O¹⁶O and the calculation of the Δ₄₇ and Δ₄₈ values. For the determination of Δ₄₇ and Δ₄₈ values, possible exchange between the CO₂ and H₂O in the acid is of particular importance as this influences the precision and accuracy of the measurement.

Methods

Stochastic and non-stochastic C

SUBMITTER: Swart PK 

PROVIDER: S-EPMC12551690 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature