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[cal_iso] - Calibration of the Isotope Ratio Mass Spectrometer vs. aliquots of 15N2 gas diluted in air then helium (EAGER: Collaborative Research: Detection limit in marine nitrogen fixation measurements - Constraints of rates from the mesopelagic ocean)

Listed in Biological and Chemical Oceanography Data Management Office (BCO-DMO) ERDDAP

In order to verify that measurements of the 15N2 atom% of dissolved N2 gas samples effectuated by Membrane Inlet Mass Spectrometry are accurate, we compared these to corresponding measurements of parallel samples on a Delta V Isotope Ratio Mass Spectrometer (IRMS).

Description

To this end, we first ensured that the IRMS returns accurate 15N2 atom% values, by measuring the 15N2 atom% of a serial dilutions of a 15N2 gas stock in air and helium.

This calibration is documented herein, showing that IRMS measurements in the experimental range were accurate, as expected

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Documentation and papers

Catalogue records · 1

Topics

Inferred from text
Isotope geochemistry 77% · Mass spectrometry 75%
Provenance · 1 source records, 6 field assertions
SourceKeyLast seenRaw
Biological and Chemical Oceanography Data Management Office (BCO-DMO) ERDDAPbcodmo_dataset_7780009 d agoJSON v1
FieldAssertionExtractorEvidence
access_levelsource · erddap bco dmo orgconnector:erddap_bco_dmo_org@1.0.0
concepts[field].anzsrc:field:370303enrichment · erddap bco dmo orgtaxonomy-embedding@1.1.0title+keywords+description (77%)
concepts[field].local:field:ocean-atmosphericmapping · erddap bco dmo orgconnector:erddap_bco_dmo_org@1.0.0
concepts[modality].local:modality:mass-spectrometryenrichment · erddap bco dmo orgkeyword-concept-rules@1.0.0title+description (75%)
descriptionsource · erddap bco dmo orgconnector:erddap_bco_dmo_org@1.0.0/summary
titlesource · erddap bco dmo orgconnector:erddap_bco_dmo_org@1.0.0/title