Indoor/outdoor ratio and percent distribution behaviours of PAHs in Rome

In the frame of the Life+ EXPAH project, PAHs were monitored to assess the exposition experienced by population to airborne toxicants. Measurements were carried out both indoors and outdoors at schools, homes and offices. Two-week in-field campaigns were made from late November 2011 up to July 2012 in Rome. Our concern was focused on carcinogenic/ mutagenic PAHs (benz[a]anthracene BaA, benzo[b/j/k]fluoranthenes BbjkF, benzo[a]pyr-ene BaP, indeno[1,2,3-cd]pyrene IP, dibenz[a,h] anthracene DBA and benzo[ghi]per-ylene), as well as on perylene P) and benzo[e] pyrene BeP. The method for PAHs monitoring in the airborne particulates was optimized for indoor environments using low-volume sampling and daily sample gathering (weekly frequency).