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An approach for carbon content measurement in marine sediment: Application of organic and elemental carbon analyzer.
- Source :
-
Marine Environmental Research . Jun2023, Vol. 188, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
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Abstract
- Organic and Elemental Carbon (OEC) is widely applied in the atmospheric sciences for determining carbon content and distinguishing black carbon contents of aerosols, with an advantage that OEC-based approach can provide thermograms derived from carbonaceous material. It is potential to adopt the advantage to measure the content and composition of organic carbon (OC)% in marine sediments. Here, we utilized the OEC analyzer to measure the OC% in marine sediment based on the pyrolytic oxidation principle, and obtain the OC-derived carbon dioxide (CO 2) thermograms. We examined marine sediments and reference materials to understand the stability and reproducibility of OC% measurements using our approach. The findings indicate that the OC% results (ranging from 1.44 to 1.59%, ave. 1.55 ± 0.03%, n = 64) based on this approach are accurate. In addition, CO 2 concentration thermograms obtained by repeated measurements exhibit a strong reproducibility. Our approach can thus provide the concentrations of thermally-evolved CO 2 with increasing heating temperature to deeply understand the reactivities of OC and the compositions in sediments. We suggest that the OEC-based OC% measurement is credible when samples preparation is well-performed (e.g., suitable sample mass and uniformly distributed loading). To sum up, we provide a means to accurately determine the OC% in marine sediments in terms of the ramped-pyrolysis principle. • OEC analyzer can be used for determining OC% in marine sediments. • Our methodology for determining C% of carbonaceous material is reliable. • Our approach provides a means to decipher reactivity of OC in sediments. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01411136
- Volume :
- 188
- Database :
- Academic Search Index
- Journal :
- Marine Environmental Research
- Publication Type :
- Academic Journal
- Accession number :
- 164181090
- Full Text :
- https://doi.org/10.1016/j.marenvres.2023.106000