Table 1.

The Cu, Pb, and Zn content(mean) in soils (mg/kg)

Sample SizePbCuZn
Mean contentDCMean contentDCMean content DC
Background535.71.012.70.940.40.8
Site 154702137476332104.3
Site 257055205121014.658712.0
GDRSa34.414.448.8
  • a The environmental background value in Guangdong red soils (median) (Xu & Liu 1996).