Study on Potential Ecological Risk Assessment of Sediment from the Yangtze River (Chongqing Downtown Section) in China

Abstract:

The potential ecological risk index,proposed by Hakanson, was employed for evaluating the heavy metal contamination of the Yangtze River sediment in Chongqing downtown section. Basing on the analysis of last fifteen years monitored data from two national monitoring sections, the results indicated that: The potential ecological risk of the Yangtze River Chongqing downtown section was classified as moderate. The sequence of potential ecological risk was Zn< Pb (As) < As (Pb) < Cu < Cd< Hg, while the concentration of heavy metal in the sediment was Zn> Cu >Pb> As > Cd > Hg. The concentrations of Cd and Cu had significant correlation, Hg should be taken into prior consideration for pollution control and reduction due to its highest potential ecological risk. The RI in 2005 was highest, Hg contributed the most. All the heavy metal except for Pb had distinctive variance, but the variance of RI was not significant annually, It might carried the connotation of little difference on Pb emission amount. According to the location of monitoring site factor variance analysis, it implied that only the potential ecological risk of As and Cd varied significantly.

• Periodical: Advanced Materials Research (Volume 414)
• Pages: 262-267
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.414.262
• Online since: December 2011
• Authors: Wen Bing Ma, Fei Wang, Qin Zhai, Xing Yang, Yu Zhou, Wei Bo Zhou
• Keywords: Heavy Metal, Potential Ecological Risk Assessment, River Sediment, Single Factor Variance Analysis

References

[1] Cook JA, Andrew SM, Johnson MS. Lead, zinc, cadmium and fluoride in small mammals from contaminated grass-land established on fluorspar tailings[J]. Water, Air, Soil Pollut (51) (1990) 43-54.

DOI: 10.1007/bf00211502

[2] Jun-qing Xiao, Xu-yin Yuan. Characteristics and Transformation of Heavy Metal Pollution in Soil and Rice of Yangtze River Delta Region[J]. Agricultural Science＆Technology, 11(4) (2010)148-151.

[3] Zhanglei, Qin Yan-wen, Zheng Bing-hui, et al. Distribution and pollution assessment of heavy metal in the soil of backwater reach from input river of three gorges reservoir[J]. Environmental Science&Technology, 34(4) (2011) 81-85.

[4] Hakanson L. An ecological risk index for aquatic pollution control-A sediment logical approach[J]. Water Research, 14(1980) 975-1001.

DOI: 10.1016/0043-1354(80)90143-8

[5] N. Barlas, N. Akbulut, M. Aydogan. Assessment of Heavy Metal Residues in the Sediment and Water Samples of Uluabat Lake, Turkey[J]. Environ Contam. Toxicol. 74(2005) 286 – 293.

DOI: 10.1007/s00128-004-0582-y

[6] S.N. Sina, H. Chuaa, W. Lo. Assessment of heavy metal cations in sediments of Shing Mun Rive, Hong Kong[J]. Environment International , 26 (2001) 297-301.

DOI: 10.1016/s0160-4120(01)00003-4

[7] Chuan Fu, Jie Pan, Xinli Mou. Potential Ecological Risk Assessment of Heavy Metal Pollution in Sediments of the Yangtze River Within the Wanzhou Section, China[J]. Biological trace element research, 19(3): 270-277.

DOI: 10.1007/s12011-008-8300-y

[8] Zhang L., Zhongsheng She, Zhangsheng. Aquatic chemical elements [M]. china environmental science press, (1996) 271-275.

[9] Hongyi Niu, Qunhe Wu, Xingeng Chen. Study on the ecological risk of heavy metals in surface sediment in Guangzhou section of the pearl river (J). ACTA HYDROBIOLOGICA SINICA, 32(6) (2008) 802-810.

DOI: 10.3724/sp.j.1035.2008.00802