Stable carbon isotope compositon of fatty acids in surface sediment samples from the northwestern South China Sea


About 5% of each FAME fraction from each sample were measured in duplicate on a Thermo Trace GC coupled via a combustion interface (1000 °C) to a Thermo Finnigan MAT 252 isotope ratio mass spectrometer. Results are reported in ‰ relative to VPDB. During measurement, standard mixtures containing 12 externally-calibrated alkanes was measured every 6 runs to monitor average absolute deviations from known δ¹³C values. Accuracy was consistently ≤0.2‰. Reproducibility for the duplicate measurements of each compound ranged from <0.1‰ to 0.7‰. The δ¹³C values of n-FAMEs were subsequently corrected for the derivative methyl carbon to derive n-FA δ¹³C values including error propagation.

Related Identifier
Metadata Access
Creator Wei, Bingbing ORCID logo; Mollenhauer, Gesine (ORCID: 0000-0001-5138-564X); Hefter, Jens ORCID logo; Kusch, Stephanie ORCID logo; Grotheer, Hendrik ORCID logo; Schefuß, Enno (ORCID: 0000-0002-5960-930X); Jia, Guodong ORCID logo
Publisher PANGAEA
Publication Year 2020
Rights Creative Commons Attribution 4.0 International;
OpenAccess true
Resource Type Dataset
Format text/tab-separated-values
Size 360 data points
Discipline Earth System Research
Spatial Coverage (111.350W, 21.250S, 113.810E, 22.710N); South China Sea
Temporal Coverage Begin 2011-08-02T00:00:00Z
Temporal Coverage End 2017-10-24T00:00:00Z