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Journal articles
Acid digestion on river influenced shelf sediment organic matter: Carbon and nitrogen contents and isotopic ratios
Abstract : We show that acid type did not significantly affect results. We also find that (i) glacial and interglacial samples do not react similarly to acid pre-treatment, (ii) high acid strength (>1.5 mol L-1) induces significant bias on δ13Corg and TOC values, and therefore on C/N ratios; (iii) 25% of an isotopically distinct pool of organic carbon was lost when using acid concentrations of 0.2-1.5 mol L-1, affecting δ13Corg values by more than 1.5‰; and (iv) geochemical evidence indicates that the leachable organic carbon pool is preferentially composed of terrestrial organic matter. These findings call for precautions when using C/N ratios and associated δ13Corg values for paleoenvironmental and climate reconstructions.
https://hal.univ-brest.fr/hal-01919651
Contributor : Margot SAUVADET Connect in order to contact the contributor
Submitted on : Monday, April 12, 2021 - 3:12:15 PM
Last modification on : Tuesday, May 10, 2022 - 3:25:43 PM
Long-term archiving on: : Tuesday, July 13, 2021 - 6:55:49 PM
Contributor : Margot SAUVADET Connect in order to contact the contributor
Submitted on : Monday, April 12, 2021 - 3:12:15 PM
Last modification on : Tuesday, May 10, 2022 - 3:25:43 PM
Long-term archiving on: : Tuesday, July 13, 2021 - 6:55:49 PM
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