Diurnal/nocturnal concentrations and sources of particulate-bound PAHs, OPAHs and NPAHs at traffic and suburban sites in the region of Paris (France)

► PAH, NPAH and OPAH were quantified at traffic and suburban sites surrounding Paris. ► At the suburban site the formation of secondary compounds (OPAH and NPAH) was evident. ► We showed that resuspension could be a significant source of PM at the traffic site.