We report the levels of airborne individual PCB concentrations of particle (QFF) phases from the City of Chicago in 2009. Seventeen locations were sampled for particle phases, where 46 particle phases were collected. Total suspended particles (TSP) were also measured for the particle-phase samples. One hundred and seventy-one individual or coeluting congener PCBs are reported. Final individual PCB congener concentrations, as well as TSP are included.

• Individual PCB congener in particle phase using high-volume air sampler (i.e., HiVol QFF) Quantification and determination of individual PCB congeners using GC-MS/MS Values = 0 indicates non-detected Concentration was calculated using the mass of the congener divided by both deployment time and sampling flow (0.4 m3/min) No blank correction was performed* Total suspended particles (TSP) was measured by the difference between final (deployed) and initial masses of the QFF, divided by the deployment time and the sampling flow