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

Yan-Mei Yang; Hang-Chen Zhao; Rui Meng; Lian-Sheng He; Hao Zhao; Shi-Lin Du; Ting-Ting Ding

doi:10.13227/j.hjkx.202003134

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

Huan Jing Ke Xue. 2020 Nov 8;41(11):4989-4998. doi: 10.13227/j.hjkx.202003134.

[Article in Chinese]

Authors

Yan-Mei Yang¹, Hang-Chen Zhao^{1

2}, Rui Meng², Lian-Sheng He², Hao Zhao^{2

3}, Shi-Lin Du², Ting-Ting Ding²

Affiliations

¹ School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing 400074, China.
² Environmental Analysis Technology Test Center, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
³ School of Construction Engineering, North China University of Science and Technology, Tangshan 063000, China.

PMID: 33124242
DOI: 10.13227/j.hjkx.202003134

Abstract

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^-1 in 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, ∑PAHs 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.

Keywords: ecological risk assessment; isomer ratio; polycyclic aromatic hydrocarbons(PAHs); principal component analysis; source apportionment.

MeSH terms

Environmental Monitoring
Environmental Pollution
Polycyclic Aromatic Hydrocarbons* / analysis
Risk Assessment
Rivers
Seasons

Substances

Polycyclic Aromatic Hydrocarbons