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Preliminary assessment of stable nitrogen and oxygen isotopic composition of USGS51 and USGS52 nitrous oxide reference gases and perspectives on calibration needs

Overview of attention for article published in Rapid Communications in Mass Spectrometry, June 2018
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Title
Preliminary assessment of stable nitrogen and oxygen isotopic composition of USGS51 and USGS52 nitrous oxide reference gases and perspectives on calibration needs
Published in
Rapid Communications in Mass Spectrometry, June 2018
DOI 10.1002/rcm.8157
Pubmed ID
Authors

Nathaniel E. Ostrom, Hasand Gandhi, Tyler B. Coplen, Sakae Toyoda, J.K. Böhlke, Willi A. Brand, Karen L. Casciotti, Jens Dyckmans, Anette Giesemann, Joachim Mohn, Reinhard Well, Longfei Yu, Naohiro Yoshida

Abstract

Despite a long history and growing interest in isotopic analyses of N2 O, there is a lack of isotopically characterized N2 O isotopic reference materials (standards) to enable normalization and reporting of isotope-delta values. Here we report the isotopic characterization of two pure N2 O gas reference materials, USGS51 and USGS52, which are now available for laboratory calibration (https://isotopes.usgs.gov/lab/referencematerials.html). A total of 400 sealed borosilicate glass tubes of each N2 O reference gas were prepared from a single gas filling of a high vacuum line. We demonstrated isotopic homogeneity via dual-inlet isotope-ratio mass spectrometry. Isotopic analyses of these reference materials were obtained from eight laboratories to evaluate interlaboratory variation and provide preliminary isotopic characterization of their δ15 N, δ18 O, δ15 Nα , δ15 Nβ and site preference (SP ) values. The isotopic homogeneity of both USGS51 and USGS52 was demonstrated by one-sigma standard deviations associated with the determinations of their δ15 N, δ18 O, δ15 Nα , δ15 Nβ and SP values of 0.12 mUr or better. The one-sigma standard deviations of SP measurements of USGS51 and USGS52 reported by eight laboratories participating in the interlaboratory comparison were 1.27 and 1.78 mUr, respectively. The agreement of isotope-delta values obtained in the interlaboratory comparison was not sufficient to provide reliable accurate isotope-measurement values for USGS51 and USGS52. We propose that provisional values for the isotopic composition of USGS51 and USGS52 determined at the Tokyo Institute of Technology can be adopted for normalizing and reporting sample data until further refinements are achieved through additional calibration efforts.

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Mendeley readers

The data shown below were compiled from readership statistics for 24 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 24 100%

Demographic breakdown

Readers by professional status Count As %
Unspecified 6 25%
Student > Ph. D. Student 6 25%
Researcher 5 21%
Student > Master 3 13%
Other 1 4%
Other 3 13%
Readers by discipline Count As %
Unspecified 10 42%
Environmental Science 7 29%
Agricultural and Biological Sciences 4 17%
Earth and Planetary Sciences 1 4%
Chemistry 1 4%
Other 1 4%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 05 May 2018.
All research outputs
#11,459,732
of 12,892,079 outputs
Outputs from Rapid Communications in Mass Spectrometry
#2,765
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Outputs of similar age
#233,362
of 269,193 outputs
Outputs of similar age from Rapid Communications in Mass Spectrometry
#59
of 65 outputs
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