Ca

Mg

Na

K

Fe

Mn

Zn

Cu

Pb

Ca

1

Mg

0.890^**

1

Na

0.435^*

0.142

1

K

0.663^**

0.758^**

0.281

1

Fe

0.409^*

0.553^**

−0.041

0.526^**

1

Mn

−0.093

−0.050

−0.041

−0.325

0.264

1

Zn

0.483^*

0.511^**

0.059

0.445^*

0.161

−0.542^**

1

Cu

−0.071

−0.140

0.417^*

0.061

0.228

−0.042

0.029

1

Pb

−0.388^*

−0.541^**

0.147

−0.347

−0.352

−0.288

0.029

0.606^**

1