Distribution Characteristics and Potential Ecological Risk Assessments and Heavy Metals in Surface Sediments and Water Body of the Yalu River Estuary China

Abstract:

Surface sediments and water body of the Yalu River estuary were monitored to evaluate the spatial distribution and the enrichment condition of heavy metals: As, Cu, Cd, Cr, Hg, Pb and Zn. Surface sediment samples and water samples were collected from 5 stations, at seven month intervals from May 2012 to November 2012. The correlation of the heavy metals in the surface sediments and the water body was analyzed by using Pearson method. And the method of potential ecological risk index presented by Hakanson was used to evaluate the potential ecological risk of heavy metal pollution in the Yalu River estuary. The results showed that, the order of heavy metals spatial fluctuation degree was Zn > Cr > Pb > Cu > total As > Cd > total Hg, the fluctuation degree of total contents of heavy metals was A1 > A3 > A2 ≈ A4 > A5. The evaluation of potential ecological risk showed that, total Hg reflected considerate ecological risk, total As and Cd reflected moderate ecological risk, and the rest of the heavy metals posed a low ecological risk.

• Periodical: Applied Mechanics and Materials (Volumes 522-524)
• Pages: 88-91
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.522-524.88
• Online since: February 2014
• Authors: Yao Qing Wu, Li Li
• Keywords: Heavy Metal, Potential Ecological Risk, Yalu River Estuary

References

[1] Jinhua Jiang, Zhengling Jiang , Xifang Chen , Yiyang Hu , Yanxiong Cheng. Distribution of heavy metals and enrichment of it in sediment and organisms in Jiaojiang Estury [J], Marine Environmental Science, 2007, 26 (1), 94-98.

[2] A Ruus, Ingm Schann , S Oxnevad, et al. Experimental results on bioaccumulation of metals and organic contaminants from marine sediments [ J ]. Aquat Toxicol, 2005, 72 (3), 273-292.

DOI: 10.1016/j.aquatox.2005.01.004

[3] GB/T 12763. Specifications for oceanographic survey [S].

[4] Hongying Cao, Tao Liang, Lijun Wang, Shiming Ding, Liqiang Ding, Xin Yan. Contents and Distribution Characteristics of Heavy Metals in Water and Sediment of Intertidalite [J], Environmental Science, 2006, 27 (1), 126-131.

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

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

[6] Mingcai Yan, Qinghua Chi. The chemical compositions of the condimental crust and rocks in the eastern part of china [M], Beijing Sicience Press, (2005).