Assessments of ambient air sampling techniques for collecting airborne polyhalogenated dibenzo-p-dioxins (PCDD), dibenzofurans (PCDF) and biphenyls (PCB)

Abstract An ambient air sampler employing a filter and a polyurethane foam/XAD-2 cartridge effectively traps and retains the 2,3,7,8-chlorine substituted dibenzo-p-dioxin and dibenzofuran isomers, as well as 2,3,7,8-tetrabromodibenzo-p-dioxin (TBDD) and 2,3,7,8-tetrabromodibenzofuran (TBDF), and permits quantitation of these isomers in ambient air at concentrations lower than 1 pg/m 3 .