Agreed method for determining one or more air quality characteristics where it is
not practical to produce a
reference material; the result obtained is defined as the measure of the air quality characteristic.
For example, a gas such as
NO2
may be somewhat
unstable when stored in a tank at low mixing ratios, so that the use of a more
stableNO
standard mixture in
N2
may be oxidized to
NO2
by
O3
in a specified manner referred to as the
NO2
reference procedure.
Source:
PAC, 1990, 62, 2167
(Glossary of atmospheric chemistry terms (Recommendations 1990))
on page 2210
Cite as:
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8.
https://doi.org/10.1351/goldbook.
