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Rhoderick GC, Kitzis DR, Kelley ME, et al. Development of a Northern Continental Air Standard Reference Material. Anal Chem. 2016;88(6):3376-85doi: 10.1021/acs.analchem.6b00123.
Rhoderick, G. C., Kitzis, D. R., Kelley, M. E., Miller, W. R., Hall, B. D., Dlugokencky, E. J., Tans, P. P., Possolo, A., & Carney, J. (2016). Development of a Northern Continental Air Standard Reference Material. Analytical chemistry, 88(6), 3376-85. https://doi.org/10.1021/acs.analchem.6b00123
Rhoderick, George C, et al. "Development of a Northern Continental Air Standard Reference Material." Analytical chemistry vol. 88,6 (2016): 3376-85. doi: https://doi.org/10.1021/acs.analchem.6b00123
Rhoderick GC, Kitzis DR, Kelley ME, Miller WR, Hall BD, Dlugokencky EJ, Tans PP, Possolo A, Carney J. Development of a Northern Continental Air Standard Reference Material. Anal Chem. 2016 Mar 15;88(6):3376-85. doi: 10.1021/acs.analchem.6b00123. Epub 2016 Mar 01. PMID: 26890890.
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Anal Chem. 2016 Mar 15;88(6):3376-85. doi: 10.1021/acs.analchem.6b00123. Epub 2016 Mar 01.

Development of a Northern Continental Air Standard Reference Material.

Analytical chemistry

George C Rhoderick, Duane R Kitzis, Michael E Kelley, Walter R Miller, Bradley D Hall, Edward J Dlugokencky, Pieter P Tans, Antonio Possolo, Jennifer Carney

Affiliations

  1. Gas Sensing Metrology Group Chemical Sciences Division Materials Measurement Laboratory, National Institute of Standards and Technology , 100 Bureau Drive, Gaithersburg, Maryland 20899-8393, United States.
  2. Global Monitoring Division Earth System Research Laboratory, National Oceanic and Atmospheric Administration (NOAA) , 325 Broadway, Boulder, Colorado 80305, United States.
  3. Statistical Engineering Division National Institute of Standards and Technology 100 Bureau Drive Gaithersburg, Maryland 20899-8980 United States.

PMID: 26890890 DOI: 10.1021/acs.analchem.6b00123

Abstract

The National Institute of Standards and Technology (NIST) recently began to develop standard mixtures of greenhouse gases as part of a broad program mandated by the 2009 United States Congress to support research in climate change. To this end, NIST developed suites of gravimetrically assigned primary standard mixtures (PSMs) comprising carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) in a dry-natural air balance at ambient mole fraction levels. In parallel, the National Oceanic and Atmospheric Administration (NOAA) in Boulder, Colorado, charged 30 aluminum gas cylinders with northern hemisphere air at Niwot Ridge, Colorado. These mixtures, which constitute NIST Standard Reference Material (SRM) 1720 Northern Continental Air, were certified by NIST for ambient mole fractions of CO2, CH4, and N2O relative to NIST PSMs. NOAA-assigned values are also provided as information in support of the World Meteorological Organization (WMO) Global Atmosphere Watch (GAW) Program for CO2, CH4, and N2O, since NOAA serves as the WMO Central Calibration Laboratory (CCL) for CO2, CH4, and N2O. Relative expanded uncertainties at the 95% confidence interval are <±0.06% of the certified values for CO2 and N2O and <0.2% for CH4, which represents the smallest relative uncertainties specified to date for a gaseous SRM produced by NIST. Agreement between the NOAA (WMO/GAW) and NIST values based on their respective calibration standards suites is within 0.05%, 0.13%, and 0.06% for CO2, CH4, and N2O, respectively. This collaborative development effort also represents the first of its kind for a gaseous SRM developed by NIST.

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