title: Did municipal solid waste landfill have obvious influence on polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) in ambient air: A case study in East China.
abstract: Municipal solid waste (MSW) landfill was a main way to disposal of MSW and almost 95% of MSW was disposed by landfills in the world. In order to understand the influence of MSW landfill on polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) in surrounding atmosphere, 42 ambient air samples were collected and analyzed from surrounding sites, background site, upwind site and downwind site of a MSW landfill in East China. The results of present study were summarized as follows. (1) The total concentrations of PCDD/Fs (∑PCDD/Fs) in ambient air from surrounding sites, background site, upwind site and downwind site were 2.215±1.004, 2.058±0.458, 2.617±1.092 and 1.822±0.566pgNm-3, respectively. (2) The toxic equivalent concentrations (TEQ) of PCDD/Fs in ambient air from surrounding sites, background site, upwind site and downwind site were 0.103±0.017, 0.096±0.015, 0.120±0.024 and 0.108±0.014pg I-TEQNm-3, respectively. (3) The congener profiles, ∑PCDD/Fs and TEQ between background atmosphere and surrounding atmosphere of landfill did not show statistically significant difference. (4) The ∑PCDD/Fs and TEQ in ambient air of downwind site were not higher than that of upwind site, suggesting that studied landfill did not have obvious influence on PCDD/Fs in ambient air from downwind site. (5) The 95th percentile carcinogenic risk (CR) of PCDD/Fs in ambient air from surrounding sites, background site, upwind site and downwind site were 8.03×10-9, 7.57×10-9, 9.69×10-9and 8.15×10-9, respectively, which were much lower than the threshold value of CR (10-6), suggesting that studied landfill did not influence the CR of PCDD/Fs in surrounding atmosphere and negligible cancer risk occurred. (6) The non-carcinogenic risk (non-CR) analysis indicated that landfill did not have influence on the non-CR of PCDD/Fs in surrounding atmosphere and no obvious non-carcinogenic effects developed.
authors.affiliation: School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.
authors.forename: Jiafu
authors.initials: J
authors.lastname: Li
authors.affiliation: School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.
authors.forename: Chong
authors.initials: C
authors.lastname: Wang
authors.affiliation: School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Du
authors.affiliation: School of Marine Science and Technology, Tianjin University, Tianjin 300072, China.
authors.forename: Zhiwei
authors.initials: Z
authors.lastname: Lv
authors.affiliation: School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.
authors.forename: Xiaonan
authors.initials: X
authors.lastname: Li
authors.affiliation: School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.
authors.forename: Xuepeng
authors.initials: X
authors.lastname: Hu
authors.affiliation: School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China; School of Marine Science and Technology, Tianjin University, Tianjin 300072, China. Electronic address: nzg@tju.edu.cn.
authors.forename: Zhiguang
authors.initials: Z
authors.lastname: Niu
authors.affiliation: MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China. Electronic address: zhangying@nankai.edu.cn.
authors.forename: Ying
authors.initials: Y
authors.lastname: Zhang
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D001272:Atmosphere; D002681:China; D000072338:Dibenzofurans, Polychlorinated / Q000032:analysis*; D004784:Environmental Monitoring; D000072317:Polychlorinated Dibenzodioxins / Q000032:analysis*; D062611:Solid Waste; D064091:Waste Disposal Facilities
chemical_list: D000393:Air Pollutants; D000072338:Dibenzofurans, Polychlorinated; D000072317:Polychlorinated Dibenzodioxins; D062611:Solid Waste
keywords: Ambient air; Environmental impact; Health risk; Municipal solid waste landfill; PCDD/Fs