We monitored the 15N2 gas atom% values of prepared solutions stored in Exetainer vials (filled with no headspace) in order to verify that these values remained stable over a period of weeks to months of storage. The integrity of samples was preserved for at least 6 months.

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Archival Copy

Version Date	Archive	Persistent Identifier	Date Assigned
2019-10-02	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.1575/1912/bco-dmo.778047.1	2020-01-06

Description

Test of integrity of dissolved 15N2 gas samples stored in Exetainer vials

Methods & Sampling

We tested the integrity of 15N2 gas samples dissolved in seawater samples during storage in Exetainer™ vials, which were kept submerged at 8˚C or otherwise left at room temperature unsubmerged. Multiple Exetainer™ subsamples were gravity-filled with discrete 15N2 preparations (in 1 L bottles) and triplicate subsamples were measured by MIMS at consecutive time intervals.

Data Processing Description

BCO-DMO Processing Notes:
- table was extracted from original spreadsheet.
- added conventional header with dataset name, PI name, version date
- modified parameter names to conform with BCO-DMO naming conventions

Data Files

File
integrity_tests.csv (Comma Separated Values (.csv), 5.34 KB) MD5:93db74db8991b10f62cfc199b2d217f6 Primary data file for dataset ID 778047

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1732246

Deployments

None available yet

Instruments

Isotope-ratio Mass Spectrometer

Supplied Name: Isotope Ratio Mass Spectrometer

Supplied Description:

continuous flow Delta V Isotope Ratio Mass Spectrometer (Smith et al. 2015), and continuous flow-GV Isoprime IRMS (Charoenpong et al., 2014)

Instrument Type

Generic Name: Isotope-ratio Mass Spectrometer

Acronym: IR Mass Spec; IRMS

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB16/

Generic Description:

The Isotope-ratio Mass Spectrometer is a particular type of mass spectrometer used to measure the relative abundance of isotopes in a given sample (e.g. VG Prism II Isotope Ratio Mass-Spectrometer).

Membrane Inlet Mass Spectrometer

Supplied Description:

Membrane Inlet Mass Spectrometer (Bay Instruments)

Instrument Type

Generic Name: Membrane Inlet Mass Spectrometer

Acronym: MIMS

Generic Description:

Membrane-introduction mass spectrometry (MIMS) is a method of introducing analytes into the mass spectrometer's vacuum chamber via a semipermeable membrane.

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
Avg_15N_at_pcnt	Average 15N at% (n = 3)	unitless	no_bcodmo_term
Date_of_analysis	date sample was analyzed	unitless	date
Days_of_storage	length of storage	days	duration
Notes	additional comments	unitless	no_bcodmo_term
Sample_ID	sample identification	unitless	sample
stdev_at_pcnt	stdev at%	unitless	no_bcodmo_term
Trial	trial information	unitless	no_bcodmo_term

Database

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Dataset: integrity_tests

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Dataset: integrity_tests

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