title: Distribution Characteristics and Risk Assessment of Polycyclic Aromatic Hydrocarbons in the Momoge Wetland, China.
abstract: The Momoge Nature Reserve is the research object of this study. Through field sampling, laboratory experiments and analysis, the contents, distribution characteristics, source identification, pollution levels and risk levels of polycyclic aromatic hydrocarbons (PAHs) in wetland soils were studied. The results show that the sum content of 16 types of PAHs (Σ16 PAH) in the wetland soil was within the range (0.029-0.4152) mg/kg. PAHs in wetland soil are primarily 2-3-rings PAHs. PAHs in the Momoge wetland soil have multiple sources: petroleum, combustion of petroleum and coal, and others, of which petroleum and the sum of combustion of petroleum and coal account for 38.0% and 59.3%, respectively. Research, using the standard index and pollution range methods, shows that the content of the PAH labelled Nap, found in the Momoge wetland soil, is excessive; some sampling sites exhibit a low level of pollution. The result of a biotoxicity assessment shows that there are two sampling sites that occasionally present an ecological toxicity hazard. The result of the organic carbon normalization process shows that an ecological risk exists only at sampling site No. 10.
authors.affiliation: State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun 130117, China. xujl@foxmail.com.
authors.forename: Jianling
authors.initials: J
authors.lastname: Xu
authors.affiliation: State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun 130117, China. wanghanxizs1982@126.com.
authors.forename: Hanxi
authors.initials: H
authors.lastname: Wang
authors.affiliation: State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun 130117, China. shenglx@nenu.edu.cn.
authors.forename: Lianxi
authors.initials: L
authors.lastname: Sheng
authors.affiliation: Educational Development Research Center, Jilin Provincial Institute of Education, Changchun 130022, China. liuxuejun@jl.gov.cn.
authors.forename: Xuejun
authors.initials: X
authors.lastname: Liu
authors.affiliation: State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun 130117, China. sdkjzhengxiaoxue@163.com.
authors.forename: Xiaoxue
authors.initials: X
authors.lastname: Zheng
mesh_terms: D002681:China; D004784:Environmental Monitoring; D004787:Environmental Pollution / Q000032:analysis*; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D018570:Risk Assessment; D012989:Soil Pollutants / Q000032:analysis*; D053833:Wetlands
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D012989:Soil Pollutants
keywords: PAHs; distribution characteristics; ecological risk; wetland