Spatial Variation and Source Analysis of Heavy Metals in Surface Sediments of the Hejiang River, China

Abstract:

To fully understand the levels of heavy metal contamination and potential ecological risk,content level and distribution characteristics of nine kinds of heavy metal (Ti, Cd, Pb, Zn, Cr, Cu, Hg, As, Al) were analyzed in surface sediments collected in Hejiang River which flows through Hezhou City, a typical developing city in China. Researching enrichment regularity and the possible source of heavy metals by correlation analysis, as well geo-accumulation index (I_geo) was calculated to assess the anthropogenic contamination in the region. Results showed that the levels of sediment heavy metals followed the order: Al > Zn > As > Cu > Pb > Cr > Cd > Tl > Hg; obvious positive correlations were observed amongst the concentrations of Pb, Zn, As, Cd, Cu, Al; the pollution extent of heavy metals in sediments by geo-accumulation index (I_geo) followed the order: Cd > As > Zn > Cu > Pb > Hg > Al > Cr > Tl, the pollution extent of Cd and As were serious at m sampling sites.

• Periodical: Applied Mechanics and Materials (Volumes 522-524)
• Pages: 71-74
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.522-524.71
• Online since: February 2014
• Authors: Shao Peng Wang, Ying Hui Wang, Rui Jie Zhang, Dao Quan Xu
• Keywords: Heavy Metal, Hejiang, Pollution Characteristics, Risk Assessment, Surface Sediments

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