Blank masses of individual polychlorinated biphenyl congeners in gas phases in air in Chicago, Il, USA in 2009

We report the levels of airborne individual PCB concentrations of gas phases from the City of Chicago in 2009. One hundred and seventy-one individual or coeluting congener PCBs are reported. Field blank masses for all 171 individual congeners for gas (XAD-2) phases are included here. The XAD-2 blank samples were not exposed or opened to the air at any time during the sampling period.