A FRAMEWORK FOR POLLUTION CHARACTERISTIC ASSESSMENT AND SOURCE APPORTIONMENT OF HEAVY METAL CONTAMINANTS IN RIVERBED SEDIMENTS: A CASE STUDY

作者：Chen, Haiyang; Teng, Yanguo^*; Wang, Jinsheng; Song, Liuting

来源：Fresenius Environmental Bulletin, 2012, 21(5): 1110-1117.

• Heavy metal pollution
• Geoaccumulation index
• Potential ecological risk index
• Source apportionment
• SLURP
• RUSLE

Due to their environmental persistence and biogeochemical recycling and ecological risks, heavy metals (HMs) are of particular concern worldwide. Here, a framework for pollution characteristic assessment and source apportionment of HMs for efficient toxics control was proposed. The Jinjiang River (China) was chosen for evaluation of the method proposed here. Fifteen samples in surface sediments were sampled in December 2010. Then the geo-accumulation index and potential ecological risk index were used to assess the pollution status. The multivariable statistic approach was employed to analyze and interpret the measured data for source identification. The pollution loads of HMs were estimated for source apportionment based on Semi-distributed Land Use Runoff Processes model and Revised Universal Soil Loss Equation. The results indicated that Cd was the main potential ecological risk pollutant in sediments of the Jinjiang River with high geo-accumulation index and potential ecological risk index. Urban surface runoff, ore mining, petrochemical, metal refining and soil erosion were the main sources of Cd with contribution ratio of 26.00%, 25.29%, 18.70%, 15.24% and 14.18%, respectively.

• 出版日期2012
• 单位北京师范大学