B
Blaza Toman
Researcher at National Institute of Standards and Technology
Publications - 89
Citations - 2280
Blaza Toman is an academic researcher from National Institute of Standards and Technology. The author has contributed to research in topics: Measurement uncertainty & Uncertainty analysis. The author has an hindex of 20, co-authored 79 publications receiving 1927 citations. Previous affiliations of Blaza Toman include International Atomic Energy Agency & George Washington University.
Papers
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Journal ArticleDOI
New Guidelines for δ13C Measurements
Tyler B. Coplen,Willi A. Brand,M. Gehre,Manfred Gröning,H. A. J. Meijer,Blaza Toman,R M. Verkouteren +6 more
TL;DR: In this paper, it is recommended that δ13C values of both organic and inorganic materials be measured and expressed relative to VPDB (Vienna Peedee belemnite) on a scale normalized by assigning consensus values of −46.6
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After two decades a second anchor for the VPDB δ13C scale
Tyler B. Coplen,Willi A. Brand,Matthias Gehre,Manfred Gröning,Harro A. J. Meijer,Blaza Toman,R. Michael Verkouteren +6 more
TL;DR: In this paper, four laboratories (Centrum voor Isotopen Onderzoek, Groningen, The Netherlands, Max-Planck-Institute forBiogeochemistry, Jena, Germany; UFZ Leipzig-Halle,Leipzig,Germany; US Geological Survey, Reston, VA, USA) performed analytical measurements.
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Organic Reference Materials for Hydrogen, Carbon, and Nitrogen Stable Isotope-Ratio Measurements: Caffeines, n-Alkanes, Fatty Acid Methyl Esters, Glycines, l-Valines, Polyethylenes, and Oils
Arndt Schimmelmann,Haiping Qi,Tyler B. Coplen,Willi A. Brand,Jon Fong,Wolfram Meier-Augenstein,Helen F. Kemp,Blaza Toman,Annika Ackermann,Sergey Assonov,Anita T. Aerts-Bijma,Ramona Brejcha,Yoshito Chikaraishi,Tamim A. Darwish,Martin Elsner,Matthias Gehre,Heike Geilmann,Manfred Gröning,Jean-François Hélie,Sara Herrero-Martín,Harro A. J. Meijer,Peter E. Sauer,Alex L. Sessions,Roland A. Werner +23 more
TL;DR: An international project developed, quality-tested, and determined isotope-δ values of 19 new organic reference materials (RMs) for hydrogen, carbon, and nitrogen stable isotopes-ratio measurements, in addition to analyzing pre-existing RMs NBS 22 (oil), IAEA-CH-7 (polyethylene foil), and IaeA-600 (caffeine).
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Laboratory effects models for interlaboratory comparisons
Blaza Toman,Antonio Possolo +1 more
TL;DR: In this article, an alternative statistical model that accommodates all participant data and incorporates the dispersion of the measurement values obtained by different laboratories into the total uncertainty of the various estimates is proposed.
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Assessment of measurement uncertainty via observation equations
Antonio Possolo,Blaza Toman +1 more
TL;DR: In this article, an alternative approach is proposed, which starts from the observation equation, which relates the experimental data to the measurand: this allows a uniform treatment of the most diverse metrological problems, and, once it is used in the context of Bayesian inference, also facilitates the exploitation of any information that may pre-exist about the measurement, alongside the information that fresh experimental data provide about it.