Determination of Nitrogen Oxides with Rhodamine B by Fluorescence Quenching Method

Table 1

Results of the determination of NO_x in the air samples.

Place of sample	Average concentration of NOx per hour (mg/m^3)	RSD (%) (𝑛=6)	Saltzman method	Method recovery (%)
Laboratory	0.0297	3.4	0.0304	104.7
Outside of laboratory	0.0095	7.4	0.0086	97.8
A gymnastical  zone	0.0029	8.2	–-	91.5