RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2007, Vol. 16 >> Issue (5): 620-620.

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DISTRIBUTION AND ECOLOGICAL RISK ASSESSMENT OF POLYCYCLIC |AROMATIC HYDROCARBONS IN SUSPENDED PARTICULATE MATTER FROM THE YANGTZE ESTUARY AND COASTAL AREAS

OU Dongni1| LIU Min1| CHENG Shubo1| XU Shiyuan1| HOU Lijun2| GAO Lei1   

  • Received:1900-01-01 Revised:1900-01-01 Online:2007-09-20

Abstract:

The concentrations and spatial distribution of EPA 14 priority polycyclic aromatic hydrocarbons (PAHs) were studied in suspended particulate matter from the Yangtze Estuary and coastal areas.The results showed that the concentrations of total PAHs ranged from 600 ng/g to 12 303 ng/g with the average of 5 373 ng/g,and the components with 3~4 rings were dominant among PAH compounds.Sewage discharge from nearby city and highly industrial area in nearby coastal areas was the main factor affecting the spatial distribution of PAHs in suspended particulate matter.Based on the relative abundance of PAH rings,fuoranthene/prene ratio and prene/bnzo(a)pyrene ratio,the main possible sources of PAHs were identified as anthropogenic release of oil and oil products and uncompleted combustion of fossil fuels.Compared with the corresponding environmental guideline values,PAHs components,such as naphthalene,phenanthrene,fluorene,anthracene,Benzo (〖WTBZ〗b〖WTBZ〗) fluoranthene and benzo (〖WTBZ〗k〖WTBZ〗) fluoranthene，may have/had different level of biological effects.

Key words: distribution, sources, ecological risk assessment, polycyclic aromatic hydrocarbons, suspended particulate matter, the Yangtze Estuary

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