Stabilization and Ecological Risk Evaluation of Heavy Metals in Farmland Soils by Addition of Attapulgite Modified with Phosphates
Table 4
The correlation coefficients between accumulation of maize, BCF, and TF, with bioavailability, SEm, and ERIm of Cd, Zn, and Ni in soil treated by seven stabilizers.
Metal
CaCl2
TCLP
SEm-CaCl2
SEm-TCLP
ERIm-CaCl2
ERIm-TCLP
Cd
Aboveground
0.861
0.878
-0.862
-0.878
0.862
0.878
Underground
0.892
0.904
-0.891
-0.905
0.891
0.905
BCF
0.890
0.904
-0.890
-0.904
0.890
0.904
TF
0.914
0.921
-0.914
-0.921
0.914
0.921
Zn
Aboveground
0.765
0.804
-0.758
-0.804
0.758
0.804
Underground
0.844
0.819
-0.839
-0.819
0.839
0.819
BCF
0.839
0.816
-0.834
-0.816
0.834
0.816
TF
0.781
0.825
-0.774
-0.825
0.774
0.825
Ni
Aboveground
0.890
0.825
-0.890
-0.825
0.890
0.825
Underground
0.897
0.831
-0.897
-0.831
0.897
0.831
BCF
0.896
0.828
-0.896
-0.828
0.896
0.828
TF
0.563
0.592
-0.563
-0.592
0.563
0.592
At 0.05 level, at 0.01 level, and at 0.001 level for significant correlation. .
