An ultra-rapid optical gas standard for dynamic processes: Absolute NH3 quantification and uncertainty evaluation

Zhu, Denghao; Agarwal, Sumit; Shu, Bo; Fernandes, Ravi; Qu, Zhechao

doi:https://doi.org/10.1016/j.measurement.2024.114559

Zugriffsnummer	52467
Dokumenttyp	Zeitschriftenartikel
Peer Review	mit Peer Review
Sprache	Englisch
Titel	An ultra-rapid optical gas standard for dynamic processes: Absolute NH₃ quantification and uncertainty evaluation
Autor(in); Institution	Zhu, Denghao; 3.3, Physikalische Chemie, PTB-Braunschweig Agarwal, Sumit; 3.3, Physikalische Chemie, PTB-Braunschweig Shu, Bo; 3.3, Physikalische Chemie, PTB-Braunschweig Fernandes, Ravi; 3.3, Physikalische Chemie, PTB-Braunschweig Qu, Zhechao; 3.3, Physikalische Chemie, PTB-Braunschweig
Quelle/Jahr	Measurement: 230 (2024)
Artikelnummer	114559
ISSN	0263-2241 (print) ; 1873-412X (online)
DOI	https://doi.org/10.1016/j.measurement.2024.114559
Verlag	Amsterdam: Elsevier
Freie Schlagworte	optical gas standard ; ammonia ; TDLAS ; shock tube ; cross-section ; uncertainty budget
Zusammenfassung	An ultra-rapid Optical Gas Standard (OGS) for absolute NH₃ quantification in the shock tube has been developed. For the first time, the absolute NH₃ mole fractions before the incident shock wave, after the incident shock wave and immediately after the reflected shock wave (within 25 μs) were quantified using OGS. On that basis, spectrally resolved NH₃ absorption cross-section datasets were measured over pressure ranges of 1.15–3.15 bar and elevated temperatures (up to 2680 K), facilitating NH₃ mole fraction quantification after the reflected shock wave using a correlative linear fit method. Besides, comprehensive uncertainty evaluations were conducted for thermodynamic parameters and species mole fraction following the ’Guide to the Expression of Uncertainty in Measurement (GUM)’. This metrological uncertainty analysis not only contributes to providing high-quality data but also serves as a valuable reference for other traceable measurements in shock tubes, such as dynamic temperature and pressure calibrations.

Themenbereich der Metrologie	Metrologie in der Chemie und Stoffeigenschaften
Innovationscluster	Umwelt und Klima
Förderinformationen (1)	Förderername: Alexander von Humboldt-Stiftung (AvH) Förderer ID: 0000 0001 1034 1691 Förderer ID Typ: ISNI
Förderinformationen (2)	Förderername: Land Niedersachsen Förderer ID: 0000 0004 0427 6733 Förderer ID Typ: ISNI Förderprogramm: H2−WaVe Förderungsnummer: ZN3772 URI der Förderung: https://www.humboldt-foundation.de/

Zitierung

Zhu, D., Agarwal, S., Shu, B., Fernandes, R., & Qu, Z. (2024). An ultra-rapid optical gas standard for dynamic processes: Absolute NH₃ quantification and uncertainty evaluation. Measurement, 230. https://doi.org/10.1016/j.measurement.2024.114559

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