
309Pollutant Emissions
the measurements for oxidizers other than air. The
method for converting NO
x
measurements to a standard
basis is given by
36
ppmppm
O
O
corr meas
2
2
basis
meas
=
−
−
20 9
20 9
.
.
(13.4)
where
ppm
meas
is the measured pollutant concentration in
ue gases (ppmvd)
ppm
corr
is the pollutant concentration corrected to a
standard O
2
basis (ppmvd)
2
is the measured O
2
concentration in ue gases
(vol.%, dry basis)
is the standard O
2
basis (vol.%, dry basis)
The correction in Equation 13.4 assumes that the excess
O
2
comes from air. This may or may not be the case with
OEC. If the excess O
2
measured in the ue gases came
from an oxy ...