Preferred Label : reference procedure;
Detailed label : reference procedure in analysis of trace air constituents;
IUPAC definition : 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 NO sub 2 /sub
may be somewhat unstable when stored in a tank at low mixing ratios, so that the use
of a more stableNO standard mixture in N sub 2 /sub may be oxidized to NO sub 2 /sub
by O sub 3 /sub in a specified manner referred to as the NO sub 2 /sub reference
procedure.;
Origin ID : R05232;
See also
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 NO sub 2 /sub
may be somewhat unstable when stored in a tank at low mixing ratios, so that the use
of a more stableNO standard mixture in N sub 2 /sub may be oxidized to NO sub 2 /sub
by O sub 3 /sub in a specified manner referred to as the NO sub 2 /sub reference
procedure.
