title: Levels and patterns of polycyclic aromatic hydrocarbons and polychlorinated biphenyls in municipal waste incinerator bottom ash in Zhejiang province, China.
abstract: Polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) were analyzed in bottom ash from municipal solid waste (MSW) incineration in six cities in Zhejiang province, where one-fourth of the MSW incinerators of China are located. Total PAH contents varied from 2222.53 to 6883.91 microg/kg. The patterns of PAHs were found to be very similar in all the samples, dominated by three-ring and four-ring PAHs. Total PCB concentrations in bottom ash ranged from 1.00 to 1.31 microg/kg, while the coplanar PCBs in the bottom ash were in the range of 0.08-0.52 microg/kg. Among PCB congeners, low chlorinated PCBs contributed to the majority of total PCBs. Generally, PAH concentrations in cities with fluidized bed incinerator were less than those in cities with grate furnace incinerator. PAH and PCB levels were affected by both plastic content in MSW incinerator feed and combustion efficiency. However, further study is required to investigate the effect of these two variables deeply, as well as other influencing factors.
authors.affiliation: Department of Environmental Engineering, College of Environmental and Resource Science, Zhejiang University, Kaixuan Road 268, 310029 Hangzhou, PR China. shenchaofeng@gmail.com
authors.forename: Chaofeng
authors.initials: C
authors.lastname: Shen
authors.forename: Xianjin
authors.initials: X
authors.lastname: Tang
authors.forename: Jun
authors.initials: J
authors.lastname: Yao
authors.forename: Dezhi
authors.initials: D
authors.lastname: Shi
authors.forename: Jie
authors.initials: J
authors.lastname: Fang
authors.forename: Muhammad Imran
authors.initials: MI
authors.lastname: Khan
authors.forename: Sardar Alam
authors.initials: SA
authors.lastname: Cheema
authors.forename: Yingxu
authors.initials: Y
authors.lastname: Chen
mesh_terms: D002273:Carcinogens / Q000032:analysis*; D002681:China; D004785:Environmental Pollutants / Q000032:analysis*; D017745:Incineration; D010969:Plastics / Q000032:analysis; D011078:Polychlorinated Biphenyls / Q000032:analysis*; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D012037:Refuse Disposal
chemical_list: D002273:Carcinogens; D004785:Environmental Pollutants; D010969:Plastics; D011084:Polycyclic Aromatic Hydrocarbons; D011078:Polychlorinated Biphenyls