title: Characteristics of dioxins content in fly ash from municipal solid waste incinerators in China.
abstract: MSWI fly ashes sampled from 15 large-scale commercial municipal solid waste incineration plants in China were analyzed for seventeen polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/PCDFs) as well as twelve dioxin-like polychlorinated biphenyls (dl-PCBs). The concentration of PCDD/PCDFs and dl-PCBs in fly ash samples ranged from 2.8 to 190ngg(-1), and 59.6ngg(-1) on average. The toxic equivalent (TEQ) ranged from 34 to 2500ng WHO(2005)-PCDD/PCDF-PCB-TEQkg(-1), and 790ng WHO(2005)-PCDD/PCDF-PCB-TEQkg(-1) on average. For PCDDs, hexa-chlorinated homolog was the dominant compound except two fly ash samples. Tetra-chlorinated homolog was dominant for PCDFs except one sample. The ratio of PCDDs/PCDFs ranged from 0.32 to 2.44 (average 0.97). The contribution of dl-PCBs to total concentration and TEQ was relatively minimal. Correlation between the concentration of three congeners and total TEQ values of fly ashes was also established. The findings obtained in this work provided overview information on the PCDD/PCDF-PCB content characterization of MSWI fly ash in China, which can be available for MSWI fly ash management in the environment.
authors.affiliation: School of Environmental and Chemical Engineering, Shanghai University, No. 99 Shangda Road, Shanghai 200444, PR China.
authors.forename: Yun
authors.initials: Y
authors.lastname: Pan
authors.forename: Libo
authors.initials: L
authors.lastname: Yang
authors.forename: Jizhi
authors.initials: J
authors.lastname: Zhou
authors.forename: Jianyong
authors.initials: J
authors.lastname: Liu
authors.forename: Guangren
authors.initials: G
authors.lastname: Qian
authors.forename: Nobutoshi
authors.initials: N
authors.lastname: Ohtsuka
authors.forename: Mamoru
authors.initials: M
authors.lastname: Motegi
authors.forename: Kokyo
authors.initials: K
authors.lastname: Oh
authors.forename: Shigeo
authors.initials: S
authors.lastname: Hosono
mesh_terms: D000393:Air Pollutants / Q000032:analysis; D001572:Benzofurans / Q000032:analysis; D002681:China; D060729:Coal Ash / Q000032:analysis* / Q000737:chemistry; D000072338:Dibenzofurans, Polychlorinated; D004147:Dioxins / Q000032:analysis*; D017745:Incineration / Q000295:instrumentation; D011078:Polychlorinated Biphenyls / Q000032:analysis; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives / Q000032:analysis; D062611:Solid Waste
chemical_list: D000393:Air Pollutants; D001572:Benzofurans; D060729:Coal Ash; D000072338:Dibenzofurans, Polychlorinated; D004147:Dioxins; D000072317:Polychlorinated Dibenzodioxins; D062611:Solid Waste; D011078:Polychlorinated Biphenyls