Publication Date:
2024-01-20
Description:
Seston samples collected with Niskin bottles; 2 L filtered onto precombusted 25mm (Ø) GF/F filters. δ¹³C and δ¹⁵N stable isotopes analyzed with elemental analyzer (Thermo Flash 2000) coupled to an isotope-ratio mass spectrometer (Thermo, Delta V Plus). Sample preparation for IRMS analysis (BSIA) were done according to the LIENSs SOPs. (see: https://lienss.univ-larochelle.fr/IMG/pdf/lienss_sif_appendix_2_protocols_v3-8.pdf)
Devices (LIENSs Stable Isotope Facility, La Rochelle, France):
Elemental analyzer: Flash 2000, Thermo Scientific, Milan, Italy.
Isotope ratio mass spectrometer:
Delta V Plus with a Conflo IV interface, Thermo Scientific, Bremen, Germany.
Reference materials for calibration:
δ¹³C: USGS-24, IAEA-CH6, IAEA-600, USGS-61, USGS-62.
δ¹⁵N: IAEA-N2, IAEA-NO-3, IAEA-600, USGS-61, USGS-62.
Working standards (two-point calibration):
%C, %N, δ¹³C and δ¹⁵N: USGS-61 (Caffeine) and USGS-62 (Caffeine)
Analytical precision:
δ¹³C: 〈0.10 ‰ (Thermo Scientific specifications).
δ¹⁵N: 〈0.10 ‰ (Thermo Scientific specifications).
Results are expressed in the δ unit notation as deviations from standards (Vienna Pee Dee Belemnite for δ¹³C and N₂ in air for δ¹⁵N) following the formula: δ¹³C or δ¹⁵N = [(Rsample/Rstandard) - 1] x 10³, where R is ¹³C/¹²C or ¹⁵N/¹⁴N, respectively.
Keywords:
ARK-XXX/2, GN05; AWI_PhyOce; Bottle number; Carbon/Nitrogen ratio; Cast number; CTD/Rosette; CTD/Rosette, ultra clean; CTD-L; CTD Large; CTD-RO; CTD-UC; Date/Time of event; DEPTH, water; East Greenland; Elevation of event; Event label; Fram Strait; Latitude of event; Longitude of event; North Greenland Sea; Norwegian Sea; Physical Oceanography @ AWI; Polarstern; POM; PS100; PS100/002-2; PS100/015-5; PS100/019-2; PS100/028-4; PS100/035-1; PS100/037-4; PS100/042-2; PS100/044-4; PS100/046-1; PS100/049-1; PS100/052-4; PS100/055-1; PS100/056-5; PS100/058-1; PS100/060-1; PS100/066-1; PS100/072-1; PS100/079-1; PS100/082-2; PS100/086-1; PS100/090-2; PS100/094-2; PS100/098-1; PS100/101-4; PS100/103-5; PS100/109-1; PS100/113-1; PS100/117-1; PS100/120-1; PS100/130-1; PS100/135-2; PS100/138-1; PS100/141-1; PS100/150-1; PS100/153-1; PS100/159-1; PS100/162-1; PS100/165-2; PS100/168-1; PS100/186-1; PS100/189-2; PS100/192-1; PS100/196-1; PS100/202-2; PS100/205-1; PS100/211-1; PS100/214-2; PS100/217-1; PS100/241-2; see description in data abstract; Station label; δ13C; δ15N; δ¹³C and δ¹⁵N
Type:
Dataset
Format:
text/tab-separated-values, 556 data points
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