Aquatic environment

Characterization and distribution of polycyclic aromatic hydrocarbon in sediments of Haihe River, Tianjin, China


JIANG Bin , ZHENG Hai-long , HUANG Guo-qiang , DING Hui , LI Xin-gang , SUO Hong-tu , LI Rui

DOI:

Received April 20, 2006,Revised August 16, 2006, Accepted , Available online

Volume 19,2007,Pages 306-311

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In this study sediment samples were collected from 13 sites of the Haihe River in Tianjin City, China, sixteen of priority polycyclic aromatic hydrocarbons (PAHs) listed in USEPA were analyzed by means of GC-MS. The total concentrations of PAH ranged from 774.81 to 255371.91 ng/g dw, and two to four rings of PAHs were dominant in sediment samples. Molecular ratios, such as phenanthrene/anthracene, fluoranthene/pyrene and low-molecular-weight PAH /high-molecular-weight PAH, were used to study the possible sources of pollution. It indicated a mixed pattern of parolytic and petrogenic inputs of PAHs in sediments in Haihe River. The petrogenic PAHs may be mainly derived from the leakage of refined products, e.g., gasoline, diesel fuel and fuel oil vehicle traffics or gas stations from urban area. The pyrolytic PAHs might be from the discharge of industrial wastewater and the emission of atmospheric particles from petrochemical factories. In addition, the levels of PAHs in the urban and industrial areas are far beyond the values reported from other rivers and marine systems reported. This situation may be due to polluted discharging from some petrochemical industrial manufactories and worse traffic conditions in Tianjin.

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