title: PCDD/Fs distribution characteristics and health risk assessment in fly ash discharged from MSWIs in China.
abstract: This study provided distribution and health risk information of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in fly ash from 4 municipal solid waste incinerators (MSWIs) in four seasons from four sites, including Zhengzhou City in Henan Province, Chuzhou City in Anhui Province, Jilin City in Jilin Province and Zibo City in Shandong Province. The toxic equivalent concentration (I-TEQ) values of PCDD/Fs ranged from 0.0707 to 0.7742ng I-TEQ/g, and no identical sequence occurred during four seasons in different sampling sites. The stabilization process might efficiently reduce the content and toxicology of PCDD/Fs in fly ash. The value of PCDD/PCDF in fly ash ranged from 0.145 to 0.787 after solidification. The characteristic index (DCI) of 2,3,4,7,8-P5CDF was 0.803 with 6.6% under 95% probability for fly ash samples discharged from MSWIs. The 95th percentile carcinogenic risks (CRs) for onsite workers were lower than the threshold value (10-5), suggesting that the cancer risk levels of PCDD/Fs in fly ash for onsite workers were acceptable. The 95th percentile non-carcinogenic risks (non-CRs) for onsite workers were lower than 1, suggesting no obvious non-carcinogenic effect was developed for onsite workers. This paper provide an overview information on the distribution of PCDD/Fs in fly ash during four seasons, and it could be used as an important fingerprint to distinguish the fly ash sources. Thus, the research could provide basic information for fly ash management in environment.
authors.affiliation: Jiangsu Levei Testing Company Limited, Wuxi 214000, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Sun
authors.affiliation: Jiangsu Levei Testing Company Limited, Wuxi 214000, China.
authors.forename: Juan
authors.initials: J
authors.lastname: Hu
authors.affiliation: Jiangsu Levei Testing Company Limited, Wuxi 214000, China.
authors.forename: Gengzheng
authors.initials: G
authors.lastname: Zhu
authors.affiliation: Jiangsu Levei Testing Company Limited, Wuxi 214000, China.
authors.forename: Dadang
authors.initials: D
authors.lastname: Zhang
authors.affiliation: Jiangsu Levei Testing Company Limited, Wuxi 214000, China.
authors.forename: Yuyi
authors.initials: Y
authors.lastname: Zhu
authors.affiliation: Jiangsu Levei Testing Company Limited, Wuxi 214000, China. Electronic address: tidechen@163.com.
authors.forename: Zhihai
authors.initials: Z
authors.lastname: Chen
authors.affiliation: Jiangsu Levei Testing Company Limited, Wuxi 214000, China. Electronic address: 1060828907@qq.com.
authors.forename: Jiafu
authors.initials: J
authors.lastname: Li
authors.affiliation: Jiangsu Levei Testing Company Limited, Wuxi 214000, China.
authors.forename: Hongjian
authors.initials: H
authors.lastname: Zhang
authors.affiliation: Jiangsu Levei Testing Company Limited, Wuxi 214000, China.
authors.forename: Jinshun
authors.initials: J
authors.lastname: Tang
authors.affiliation: School of Public Health Medical College of Soochow university, Suzhou 215000, China.
authors.forename: Jihua
authors.initials: J
authors.lastname: Nie
authors.affiliation: School of Public Health Medical College of Soochow university, Suzhou 215000, China.
authors.forename: Shuyu
authors.initials: S
authors.lastname: Zhang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000393:Air Pollutants / Q000032:analysis*; D001572:Benzofurans / Q000032:analysis*; D002681:China; D002947:Cities; D060729:Coal Ash / Q000032:analysis; D000072338:Dibenzofurans, Polychlorinated / Q000032:analysis; D006801:Humans; D017745:Incineration; D008875:Middle Aged; D016273:Occupational Exposure / Q000032:analysis; D000072317:Polychlorinated Dibenzodioxins / Q000032:analysis*; D018570:Risk Assessment; D012621:Seasons; D062611:Solid Waste / Q000032:analysis*; D055815:Young Adult
chemical_list: D000393:Air Pollutants; D001572:Benzofurans; D060729:Coal Ash; D000072338:Dibenzofurans, Polychlorinated; D000072317:Polychlorinated Dibenzodioxins; D062611:Solid Waste
keywords: DCI; Fly ash; Health risk assessment; MSWIs; PCDD/Fs