Amount of Substance Standards for Reactive Gases Realized Through Spectroscopic Measurements

Published

April 1, 2007

Author(s)

Pamela M. Chu, D D. Nelson, M S. Zahniser, J B. McManus, Q Shi, John C. Travis

Abstract

This paper discusses the use of high-precision direct absorption spectroscopy to realize amount of substance standards for ozone (O3), a reactive species which cannot be delivered through traditional gravimetrically based gas cylinder standards. The O3 amount of substance is linked to known concentrations of nitric oxide (NO) and nitrogen dioxide (NO2) through a gas phase titration reaction and spectroscopic measurements using room temperature pulsed quantum cascade lasers. Ultimately, this approach will allow determination of an O3 transition line strength linked to primary gravimetric standards of NO and NO2. The line strength can be used in future measurements to determine O3 concentrations of unknown samples.

Proceedings Title

Conference on Precision Electromagnetic Measurements (CPEM) | 25th | | CPEM

Volume

56

Issue

2

Conference Dates

July 9-14, 2006

Conference Location

Turin, IT

Conference Title

Conference on Precision Electromagnetic Measurements

Pub Type

Conferences

Keywords

gas reference standards, ozone, spectroscopy, traceability

Citation

Chu, P. , Nelson, D. , Zahniser, M. , McManus, J. , Shi, Q. and Travis, J. (2007), Amount of Substance Standards for Reactive Gases Realized Through Spectroscopic Measurements, Conference on Precision Electromagnetic Measurements (CPEM) | 25th | | CPEM, Turin, IT (Accessed December 13, 2024)