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Table 5 Correlation matrix of the heavy metals in the studied agricultural soils

From: Geochemical characteristics of agricultural soils, Assiut governorate, Egypt

 

Sand

Silt

Clay

CaCO3%

Fe2O3

P2O5

Fe

Mn

Zn

Zr

As

Pb

Cd

Co

Cr

Cu

Ni

Fe

− 0.95**

0.96**

0.79**

0.13

.78**

− 0.14

1

          

Mn

− 0.88**

0.90**

0.73**

0.06

.65**

− 0.24

0.90**

1

         

Zn

− 0.70**

0.73**

0.50

0.09

0.16

0.28

0.56*

.50*

1

        

Zr

− 0.58*

0.56*

0.53*

0.21

.66**

− 0.18

0.64**

.54*

0.32

1

       

As

0.07

− 0.11

0.07

− 0.44

− 0.33

0.29

− 0.19

− 0.12

0.18

− 0.19

1

      

Pb

− 0.12

0.13

0.04

0.01

− 0.19

0.21

− 0.09

− 0.04

.61*

0.03

0.18

1

     

Cd

− 0.37

0.31

0.46

0.18

.58*

0.30

0.44

0.34

0.04

0.63**

− 0.11

− 0.16

1

    

Co

− 0.88**

0.90**

0.70**

0.06

.84**

− 0.19

0.93**

0.85**

0.45*

0.56*

− 0.29

0.05

0.35

1

   

Cr

− 0.75**

0.73**

0.71**

0.23

.81**

− 0.13

0.85**

0.72**

0.24

0.75**

− 0.21

− 0.19

.74**

.76**

1

  

Cu

− 0.87**

0.92**

0.60*

0.12

.66**

− 0.09

0.87**

0.81**

.74**

.51*

− 0.08

0.31

0.21

.91**

.62**

1

 

Ni

− 0.50*

0.53*

0.31

0.12

0.24

0.12

0.45

0.40

.74**

0.28

0.01

0.50

0.05

0.48

0.20

.64**

1

  1. ** Correlation is significant at the 0.01 level (two-tailed). * Correlation is significant at the 0.05 level (two-tailed)