Journal of Ecology and Rural Environment ›› 2011, Vol. 27 ›› Issue (2): 1-5.doi:

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Characteristics of Copper and Cadmium Concentrations in Soil of a Typical Solid Waste Dismantling Area and Their Impact on Agricutural Produce Safety

HUANG  Chun-Lei, CHEN  Guo-Feng, SONG  Jin-Qiu, SONG  Ming-Yi   

  1. Zhejiang Institute of Geological Survey
  • Received:2010-07-13 Online:2011-03-25 Published:2011-04-22

Abstract: Samples of surface and subsurface soils, irrigation water, crops, dry and wet depositions were collected from a typical solid waste dismantling area on the coast of East Zhejiang for analysis and study on characteristics of Cd and Cu concentrations in the soil and their impact on agricultural product safety. It was found that the surface soil (0 – 20 cm) of the studied zone was seriously polluted with copper and cadmium, of which the average concentration reached to 0.34 and 65.83 mg·kg-1, respectively. The content of active cadmium, including soluble, exchangeable and carbonate-bonded Cd, accounted for 45.37% of the total Cd, which means its bio-availability and potential damage are extremely high. Based on the research, it was found that dry and wet deposition and sewage irrigation were also contributors to Cd and Cu accumulation in the soil, and the former in particular. Cd  and Cu in the crops were also investigated and found to be accumulated to a varying extent and especially in some vegetables even beyond the limit of the national standard for food safety. Correlation analysis indicates that Cd and Cu concentration in vegetables are positively related to Cd and Cu contents in the soil.

Key words: soil soil, copper, cadmium, crop, morphology, solid waste dismantling area