Distribution and potential ecological risk of heavy metals in the typical eco-units of Haihe River Basin

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• 作者：Jingling Liu ; Tao Yang ; Qiuying Chen…
• 关键词：Haihe River Basin ; ecological risk ; eco ; units ; heavy metals
• 刊名：Frontiers of Environmental Science & Engineering
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：10
• 期：1
• 页码：103-113
• 全文大小：1,018 KB
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• 作者单位：Jingling Liu (1)
  Tao Yang (1)
  Qiuying Chen (1) (2)
  Feng Liu (1)
  Binbin Wang (1)
  
  1. State Key Joint Laboratory of Environmental Simulation and Pollution Control & School of Environment, Beijing Normal University, Beijing, 100875, China
  2. College of Chemistry and Life Science, Shenyang Normal University, Shenyang, 110034, China
  
• 刊物主题：Environment, general;
• 出版者：Springer Berlin Heidelberg
• ISSN：2095-221X

文摘

The distribution and characteristics of seven heavy metals in sediments located in the typical ecological units (eco-units) (e.g., rivers, lakes, and estuaries) of Haihe River Basin were analyzed. The Hakanson potential ecological risk index was used for ecological risk assessment. The results indicated that the concentration scales of As, Hg, Cr, Cd, Pb, Cu, and Zn in the eco-units were 2.08 to 24.80 mg路g鈭?, 0.01 to 1135.50 mg路g鈭?, 28.70 to 152.73 mg路g鈭?, 0.03 to 195765.83 mg路g鈭?, 8.65 to 157.82 mg路g鈭?, 6.47 to 178.61 mg路g鈭?, and 21.09 to 1076.25 mg路g鈭?, respectively. The maximum concentrations of Hg, Cd, and Zn showed higher levels than other water bodies around the world. Hg and Cd have high concentrations in Zhangweinanhe River (1135.50 and 195765.83 mg路g鈭?, respectively) and Haihe Estuary (790.50 and 548.47 mg路g鈭?, respectively). According to the ecological factor, Cd and Hg showed very strong ecological risks. The seven heavy metals, namely, Cd, Hg, As, Cr, Pb, Cu, and Zn, exhibited ecological risk levels in descending order. Based on the potential ecological risk index, Luanhe River and Baiyangdian Lake had moderate ecological risks, whereas every site in Zhangweinanhe River and Haihe Estuary had substantial risk levels. The risk order of the typical eco-units are as follows: Zhangweinan River (2278345.68) > Estuary (161914.74) > Luanhe River (191.54)>Baiyangdian Lake (120.95). These results provided a scientific basis for water environment improvement and risk management of the Haihe River Basin. Keywords Haihe River Basin ecological risk eco-units heavy metals