The method of nitrobenzene and aniline determination in ambient air is
described. Nitrobenzene undergoes sorption on Chromosorb 102 while an
iline is sorbed on Chromosorb G doped with 4% of orthophosphoric acid.
In both cases desorption is carried out with benzene followed by capi
llary gas chromatographic analysis. Desorption of aniline occurs at al
kaline pH. Limits of determination for nitrobenzene and aniline are 1
and 2 mu g m(-3), respectively, if name ionization detector is used. E
lectron capture detector enables to decrease the limit of nitrobenzene
determination down to 0.1 mu g m(-3).