Sampling cartridges impregnated with 2,4-dinitrophenylhydrazine (MDPH)
were used to measure carbonyl compounds in two sites in Athens, one s
ite in the city centre and the other on the fringes of the city. The s
ampling was carried out during two periods 18-22 January and 6-9 April
1993, every 2 hours between 7:00 am to 19.00 pm. Among others, the ca
rbonyl levels during a winter air pollution episode and the diurnal va
riation of carbonyl concentrations were studied.