title: Distribution pattern and the risks of OPCs, PHAs and PCBs in aged refuses from landfill.
abstract: Persistent organic pollutants (POPs) are the urgent risk for landfill, and should be considered before the landfill reclamation and resource. In this work, the distribution pattern of selected POPs in landfill and their ecological risks were investigated and assessed. The Σ20OCPs, Σ16PAHs and Σ19PCBs were around 157.4-329.2, 4103-19,190, and 79.1-340.3μgkg(-1) in aged refuses, with the mean value of 206.6, 8645.4, and 155.1μgkg(-1). While those in soil covers were only 6.3-75.4, 125.5-515.3 and 2.6-43.4μgkg(-1), with the mean value of 33.7, 257.7, and 24.0μgkg(-1), respectively. The maximum OPCs, PHAs and PCBs were in aged refuse with 13, 7, 10 disposal years. Whereas, the corresponding top content in soil covers were in 10, 13 and 16years, meaning that aged refuses were not the direct source for soil covers. Among 20 OCPs measured, α-HCH, δ-HCH, Dieldrin, and Endrin were presented in all aged refuses, with the mean concentration of 93.6, 52.1, 3.9 and 4.7μgkg(-1), respectively. For PAHs, PHE, FLU and PYR were the main composition, and reached to 1535, 1224, 1187μgkg(-1). The Σ7CarPAHs occupied around 33.3-49.9% of total Σ16PAHs tested, and could be used as the indictor for PAHs pollutant in landfill. PCB-5 content was around 40.7-263.3μgkg(-1) in aged refuses, and occupied around 51.5-81.8% of Σ19PCBs measured. The HCHs and DDTs in aged refuses were below the national standard GB15618-1995, and the corresponding Σ19PCBs concentrations met the standard of GB 13015-91, suggesting that aged refuse are accepted for the further utilization process.
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China; The State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China. Electronic address: Louworld12@sjtu.edu.cn.
authors.forename: Ziyang
authors.initials: Z
authors.lastname: Lou
authors.affiliation: Sino-Japan Friendship Centre for Environmental Protection, Beijing, PR China. Electronic address: andingli2004@163.com.
authors.forename: Anding
authors.initials: A
authors.lastname: Li
authors.affiliation: Shanghai Institute for Design & Research on Environmental Engineering, Shanghai 200232, PR China.
authors.forename: Jun
authors.initials: J
authors.lastname: Tai
authors.affiliation: Shanghai Institute for Design & Research on Environmental Engineering, Shanghai 200232, PR China.
authors.forename: Wenxiang
authors.initials: W
authors.lastname: Yuan
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China.
authors.forename: Nanwen
authors.initials: N
authors.lastname: Zhu
authors.affiliation: The State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China.
authors.forename: Youcai
authors.initials: Y
authors.lastname: Zhao
mesh_terms: D004784:Environmental Monitoring; D001556:Hexachlorocyclohexane; D009943:Organophosphorus Compounds / Q000032:analysis*; D010575:Pesticides / Q000032:analysis*; D011078:Polychlorinated Biphenyls / Q000032:analysis*; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D012989:Soil Pollutants / Q000032:analysis*; D064091:Waste Disposal Facilities
chemical_list: D009943:Organophosphorus Compounds; D010575:Pesticides; D011084:Polycyclic Aromatic Hydrocarbons; D012989:Soil Pollutants; C040534:alpha-hexachlorocyclohexane; C086916:delta-hexachlorocyclohexane; D001556:Hexachlorocyclohexane; D011078:Polychlorinated Biphenyls
keywords: Aged refuse; Landfill; Organoehlorine pesticides; Polychlorinated biphenyls; Polycyclic aromatic hydrocarbons; Soil cover