The temporal distribution, source and potential toxicity of polycyclic aromatic hydrocarbons in a sediment core from an urban lake in Wuhan, China

Environmental Science. Processes & Impacts
Qian LuWenwen Yang

Abstract

The urban lakes in China, especially those with relatively small areas and closed watersheds, have suffered from serious pollution and are at a high risk of eutrophication due to the small amount of concern given to them. The temporal distribution profile, source apportionment and potential toxicity of parent polycyclic aromatic hydrocarbons (PAHs) and alkylated PAHs (APAHs) in a sediment core from an urban shallow lake with the above specifications, in the middle and lower reaches of the Yangtze River, China, were investigated in the present study. Parent PAHs, especially 4-6 ring ones, were dominant in the sediment core. The vertical profiles of 16 anthropogenic US Environmental Protection Agency (EPA) priority PAHs increased from a depth of 50 cm to 30 cm, then slightly decreased to the surface. However, biogenic perylene content decreased from bottom to surface. Most of the APAHs increased in concentration from bottom to surface. Source apportionment of EPA PAHs indicated the pyrogenic source was dominant in the sediment core. The domestic combustion of bituminous coal, coal tar and biomass can be identified as the main factors responsible for this. Toxicity assessment of selected parent PAHs demonstrated that benzo(a)pyren...Continue Reading

References

May 25, 2002·Environmental Science & Technology·Mohamad Pauzi ZakariaHidetoshi Kumata
Jan 17, 2004·Marine Pollution Bulletin·Imma TolosaChantal Cattini
Mar 24, 2010·Environmental Pollution·Jianyang GuoBixian Mai
Dec 2, 2011·Journal of Environmental Sciences (China)·Jianyang GuoFengchang Wu
Aug 27, 2013·The Science of the Total Environment·Un Hyuk YimWon Joon Shim

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