Pollution status and characteristics of PBDEs in indoor air in Hangzhou
杭州市家庭室内空气中PBDEs的污染现状与特征

Concentrations and characteristics of gas-phase and particle-phase PBDEs in indoor air of homes in Hangzhou were investigated. The concentrations of total PBDEs in living rooms and bedrooms were in the range of 21.37~83.47 pg·m-3 (with a mean value of 52.57 pg·m-3) and 28.72~58.75 pg·m-3 (with a mean value of 43.78 pg·m-3), respectively. BDE-47 and BDE-99 were the major pollutants among the congeners of PBDEs, which accounted for 62.75% of total PBDEs. Gas-phase concentration of PBDEs was 1.49 times that of PBDEs in particle phase. Concentrations of PBDEs in indoor air were low. There was no significant difference in the concentrations of the congeners of PBDEs in indoor air between high-rise and low-rise buildings. Physicochemical properties and environmental conditions were important factors to affect the concentration distribution of PBDEs in gas and particle phases.