Characterisation of gas reference materials for underpinning atmospheric measurements of stable isotopes of nitrous oxide

Ruth E. Hill-Pearce; Aimee Hillier; Eric Mussell Webber; Kanokrat Charoenpornpukdee; Simon O'Doherty; Joachim Mohn; Christoph Zellweger; David R. Worton; Paul J. Brewer

doi:10.5194/amt-14-5447-2021

Characterisation of gas reference materials for underpinning atmospheric measurements of stable isotopes of nitrous oxide

Ruth E. Hill-Pearce^*, Aimee Hillier, Eric Mussell Webber, Kanokrat Charoenpornpukdee, Simon O'Doherty, Joachim Mohn, Christoph Zellweger, David R. Worton, Paul J. Brewer

^*Corresponding author for this work

Research output: Contribution to journal › Article (Academic Journal) › peer-review

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Abstract

The precise measurement of the amount fraction of atmospheric nitrous oxide (N2O) is required to understand global emission trends. Analysis of the site-specific stable isotopic composition of N2O provides a means to differentiate emission sources. The availability of accurate reference materials of known N2O amount fractions and isotopic composition is critical for achieving these goals. We present the development of nitrous oxide gas reference materials for underpinning measurements of atmospheric composition and isotope ratio. Uncertainties target the World Metrological Organisation Global Atmosphere Watch (WMO-GAW) compatibility goal of 0.1ĝ€¯nmolĝ€¯mol-1 and extended compatibility goal of 0.3ĝ€¯nmolĝ€¯mol-1, for atmospheric N2O measurements in an amount fraction range of 325-335ĝ€¯nmolĝ€¯mol-1. We also demonstrate the stability of amount fraction and isotope ratio of these reference materials and present a characterisation study of the cavity ring-down spectrometer used for analysis of the reference materials.

Original language	English
Pages (from-to)	5447-5458
Number of pages	12
Journal	Atmospheric Measurement Techniques
Volume	14
Issue number	8
DOIs	https://doi.org/10.5194/amt-14-5447-2021
Publication status	Published - 9 Aug 2021

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Funding Information:
Financial support. This research has been supported by the Euro-

Publisher Copyright:
© Author(s) 2021.

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Hill-Pearce, R. E., Hillier, A., Mussell Webber, E., Charoenpornpukdee, K., O'Doherty, S., Mohn, J., Zellweger, C., Worton, D. R., & Brewer, P. J. (2021). Characterisation of gas reference materials for underpinning atmospheric measurements of stable isotopes of nitrous oxide. Atmospheric Measurement Techniques, 14(8), 5447-5458. https://doi.org/10.5194/amt-14-5447-2021

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abstract = "The precise measurement of the amount fraction of atmospheric nitrous oxide (N2O) is required to understand global emission trends. Analysis of the site-specific stable isotopic composition of N2O provides a means to differentiate emission sources. The availability of accurate reference materials of known N2O amount fractions and isotopic composition is critical for achieving these goals. We present the development of nitrous oxide gas reference materials for underpinning measurements of atmospheric composition and isotope ratio. Uncertainties target the World Metrological Organisation Global Atmosphere Watch (WMO-GAW) compatibility goal of 0.1ĝ€¯nmolĝ€¯mol-1 and extended compatibility goal of 0.3ĝ€¯nmolĝ€¯mol-1, for atmospheric N2O measurements in an amount fraction range of 325-335ĝ€¯nmolĝ€¯mol-1. We also demonstrate the stability of amount fraction and isotope ratio of these reference materials and present a characterisation study of the cavity ring-down spectrometer used for analysis of the reference materials.",

author = "Hill-Pearce, {Ruth E.} and Aimee Hillier and {Mussell Webber}, Eric and Kanokrat Charoenpornpukdee and Simon O'Doherty and Joachim Mohn and Christoph Zellweger and Worton, {David R.} and Brewer, {Paul J.}",

note = "Funding Information: Financial support. This research has been supported by the Euro- Publisher Copyright: {\textcopyright} Author(s) 2021.",

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doi = "10.5194/amt-14-5447-2021",

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AU - Hill-Pearce, Ruth E.

AU - Hillier, Aimee

AU - Mussell Webber, Eric

AU - Charoenpornpukdee, Kanokrat

AU - O'Doherty, Simon

AU - Mohn, Joachim

AU - Zellweger, Christoph

AU - Worton, David R.

AU - Brewer, Paul J.

PY - 2021/8/9

Y1 - 2021/8/9

N2 - The precise measurement of the amount fraction of atmospheric nitrous oxide (N2O) is required to understand global emission trends. Analysis of the site-specific stable isotopic composition of N2O provides a means to differentiate emission sources. The availability of accurate reference materials of known N2O amount fractions and isotopic composition is critical for achieving these goals. We present the development of nitrous oxide gas reference materials for underpinning measurements of atmospheric composition and isotope ratio. Uncertainties target the World Metrological Organisation Global Atmosphere Watch (WMO-GAW) compatibility goal of 0.1ĝ€¯nmolĝ€¯mol-1 and extended compatibility goal of 0.3ĝ€¯nmolĝ€¯mol-1, for atmospheric N2O measurements in an amount fraction range of 325-335ĝ€¯nmolĝ€¯mol-1. We also demonstrate the stability of amount fraction and isotope ratio of these reference materials and present a characterisation study of the cavity ring-down spectrometer used for analysis of the reference materials.

AB - The precise measurement of the amount fraction of atmospheric nitrous oxide (N2O) is required to understand global emission trends. Analysis of the site-specific stable isotopic composition of N2O provides a means to differentiate emission sources. The availability of accurate reference materials of known N2O amount fractions and isotopic composition is critical for achieving these goals. We present the development of nitrous oxide gas reference materials for underpinning measurements of atmospheric composition and isotope ratio. Uncertainties target the World Metrological Organisation Global Atmosphere Watch (WMO-GAW) compatibility goal of 0.1ĝ€¯nmolĝ€¯mol-1 and extended compatibility goal of 0.3ĝ€¯nmolĝ€¯mol-1, for atmospheric N2O measurements in an amount fraction range of 325-335ĝ€¯nmolĝ€¯mol-1. We also demonstrate the stability of amount fraction and isotope ratio of these reference materials and present a characterisation study of the cavity ring-down spectrometer used for analysis of the reference materials.

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DO - 10.5194/amt-14-5447-2021

M3 - Article (Academic Journal)

AN - SCOPUS:85112732424

SN - 1867-1381

VL - 14

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JO - Atmospheric Measurement Techniques

JF - Atmospheric Measurement Techniques

IS - 8

ER -

Characterisation of gas reference materials for underpinning atmospheric measurements of stable isotopes of nitrous oxide

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