Fractional distribution and risk assessment of heavy metal contaminated soil in vicinity of a lead/zinc mine

The results indicate that the contamination degree followed the sequence of Cd>Pb>Zn>Ni>Cu and concentrations of Pb, Cd and Zn exceeded corresponding limits of the Chinese National Soil Environmental Quality Standard III

Shun-hong HUANG

2014

Scholarcy highlights

  • The pollution characteristics of Pb, Cd, Zn, Cu and Ni in soil of lead-zinc mining area were studied
  • The results indicate that the contamination degree followed the sequence of Cd>Pb>Zn>Ni>Cu and concentrations of Pb, Cd and Zn exceeded corresponding limits of the Chinese National Soil Environmental Quality Standard III
  • The results of BCR three-step sequential extraction procedure show that the active Cd, Pb and Zn were relatively high and might exert adverse effects on the plants grown in the soil, while Cu and Ni existed in soil with a relatively stable form
  • Potential ecological risk results indicate that soils were engaging in a high potential ecological risk by pollution of Cd and should be given rise to concern
  • Foundation item: Project supported by the National Science and Technology Major Project, China; Project supported by the National “Twelfth Five-Year” Plan for Science & Technology, China; Project supported by the National High-tech Research and Development Program of China

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