Figure 1.
Study area and geographical location of ten stations in Xiawangang River.
Table 1.
Pollution grades of geo-accumulation index of the metals.
Table 2.
The main characteristics and heavy metal concentrations in Xiawangang River.
Table 3.
The main characteristics and heavy metal concentrations in soil and sediment samples from Xiawangang River.
Figure 2.
Ratio pollution index of Cd, Cu, Pb and Zn in sediment and soil samples from Xiawangang River.
Table 4.
Comparison the metal concentrations of Xiawangang River with the other rivers (BDL is below detection limit).
Figure 3.
Fractionation of Cd, Cu, Pb and Zn in sediment and soil samples from Xiawangang River.
F1: exchangeable, F2: bound to carbonates, F3: bound to Fe/Mn oxides, F4: bound to organic matter, F5: residual.
Table 5.
Heavy metal geo-accumulation index (Igeo) in soil and sediment samples from Xiawangang River.
Table 6.
Risk assessment codes of heavy metals in soil and sediment samples from Xiawangang River.
Table 7.
The results of the global test of regression analysis.
Table 8.
The results of regression coefficients and collinearity diagnosis.
Table 9.
Pearson correlation coefficients of heavy metals (n = 10).
Figure 4.
Relationships between the speciation concentrations and the corresponding Igeo.