Sources and Ecological Risk Assessment of Polycyclic Aromatic Hydrocarbons in the Jiaxing River Network

被引：0
|
作者：
Yang Y.-M. [1 ]
Zhao H.-C. [1 ,2 ]
Meng R. [2 ]
He L.-S. [2 ]
Zhao H. [1 ,2 ]
Du S.-L. [2 ]
Ding T.-T. [2 ]
机构：
[1] School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing
[2] Environmental Analysis Technology Test Center, Chinese Research Academy of Environmental Sciences, Beijing
[3] School of Construction Engineering, North China University of Science and Technology, Tangshan
来源：
Huanjing Kexue/Environmental Science | 2020年 / 41卷 / 11期
关键词：
Ecological risk assessment; Isomer ratio; Polycyclic aromatic hydrocarbons(PAHs); Principal component analysis; Source apportionment;
D O I：
10.13227/j.hjkx.202003134
中图分类号：
学科分类号：
摘要：
In order to study the pollution source and ecological risk assessment of polycyclic aromatic hydrocarbons (PAHs) in the Jiaxing river network, PAHs were analyzed by GC-MS. The results show that with the influence of rainfall and surface runoff in the wet season, the types and mass concentrations of PAHs in the river network of Jiaxing differ from the dry season. Ten and 16 priority PAHs were detected in the dry season and wet season, respectively. The average mass concentration of PAHs in the dry season was 143.83ng•L-1 and 73.47ng•L-1in the wet season. The range of mass concentration of PAHs in the dry and wet season was 77.32-283.76ng•L-1 and 13.05-133.02ng•L-1, respectively, and 2-ring and 3-ring PAHs accounted for 79.18% in the dry season and 73.60% in the wet season. PAHs pollution in the river network of Jiaxing was at a low level compared with the domestic and foreign areas. The isomer ratio and principal component analysis found that the PAHs in the Jiaxing river network mainly come from urban non-point source pollution, combustion source, and traffic pollution in the dry season and wet season. The results of the Kalf risk entropy method show that in the dry season, naphthalene(Nap), acenaphthylene(Acy), acenaphthene(Ace), fluorene(Flu), phenanthrene(Phe), anthracene(Ant), fluoranthene(Fla), pyrene(Pyr), and benzo(a)anthracene(BaA) are at moderate ecological risk. In the wet season, Nap, Acy, Flu, Phe, Fla, Pyr, BaA, benzo(b)fluoranthene(BbF), benzo(k)fluoranthene(BkF), benzo(a)pyrene(BaP), indeno(1, 2, 3-cd)pyrene(InP), and benzo(g, h, i)perylene(BghiP) are at moderate ecological risk. In the dry season, ΣPAHs are at moderate ecological risk, and low in the wet season. On the whole, PAHs pollution in the Jiaxing river network presents moderate ecological risk levels, and measures to reduce the ecological risk of PAHs in the river network should be taken by the Departments concerned. © 2020, Science Press. All right reserved.
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页码：4989 / 4998
页数：9
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