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[1]LAN Jinxiu,ZHANG Fengbao,YANG Mingyi.Assessing Heavy Metal Pollution Risk of Sediment in the Channel of the Middle and Lower Reaches of Weihe River[J].Research of Soil and Water Conservation,2017,24(04):77-82.

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Assessing Heavy Metal Pollution Risk of Sediment in the Channel of the Middle and Lower Reaches of Weihe River

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 04 Page number: 77-82 Column: Public date: 2017-08-28

Title:: Assessing Heavy Metal Pollution Risk of Sediment in the Channel of the Middle and Lower Reaches of Weihe River

Author(s):: LAN Jinxiu^1,3, ZHANG Fengbao^1,2, YANG Mingyi^1,2; 1. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China;
3. Landscaping Administration of Yongcheng City in Henan, Yongcheng, He’nan 476600, China

Keywords:: Weihe River; sediment; heavy metals; ecological risk

CLC:: P595

DOI:: -

Abstract:: In order to understand the variations in sediment heavy metal pollution in the channel of middle and lower reaches of Weihe River, 12 sampling sites in main river channel and 7 sampling sites in tributary river channel were chosen. The changes in contents of Pb, Zn, Cr, Cu, Co and Ni in sediments were analyzed and the ecological risk assessment of heavy metals in sediment was conducted by using the method of potential ecological risk index invented by Hakanson. All heavy metal contents in sediment were higher than the soil background values of Shaanxi Province in all sampling sites. Except for Pb, the contents of the other five heavy metals in the sampling sites of the main river channel were higher than in the sampling sites of the tributary river channel. The results from the method of potential ecological risk index invented by Hakanson indicated that the single potential ecological risk index of all measured heavy metals in all sampling sites was lower than 40 and the integrated potential ecological risk index of all sampling sites was lower than 50. The potential ecological risk of heavy metals in channel of the middle and low reaches of Weihe River was at the low level. These results implied that the heavy metal accumulation was low and the potential ecological risk of all measured heavy metals hardly existed in the channel of the middle and lower reaches of Weihe River.

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