@Article{egusphere-2026-4206,
AUTHOR = {Bian, T. and He, X. and Duan, X. and Li, F. and Wu, H. and Cui, L.},
TITLE = {Determination of $\delta^{13}$C-CO$_2$ in ambient air by gas preconcentration-isotope ratio mass spectrometry: methodological development and optimization at sub-milliliter injection volumes},
JOURNAL = {EGUsphere},
VOLUME = {2026},
YEAR = {2026},
PAGES = {1--18},
URL = {https://egusphere.copernicus.org/preprints/2026/egusphere-2026-4206/},
DOI = {10.5194/egusphere-2026-4206}
}