A simple and cost-effective sample preparation and storage method for stable isotope analysis of atmospheric CO₂ for GasBench II/continuous flow isotope ratio mass spectrometry.

ABSTRACT:

Rationale

The stable isotope compositions of atmospheric CO₂ can provide useful insight into various geochemical processes and carbon cycles on Earth, which is critical for understanding of Earth's changing climate. Here, we present a simple and cost-effective analytical method for the collection and measurement of carbon and oxygen isotope compositions of atmospheric CO₂.

Methods

Air samples of ~150 mL were collected individually or collectively using our simple active air collection system and then extracted on a vacuum purification line to remove noncondensable gases and atmospheric water vapor. The efficiency of removing atmospheric water vapor was tested by using a magnesium perchlorate desiccant trap and a dry ice/ethanol trap. Lastly, a "J-Cut tu

SUBMITTER: Manaj S 

PROVIDER: S-EPMC11625694 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature