Fe

Mn

Cu

Pb

Cd

Ni

Zn

OC

Fe

1

Mn

0.323

1

Cu

0.969^**

0.298

1

Pb

0.707^*

0.373

0.571

1

Cd

0.605

0.429

0.608

0.713^*

1

Ni

0.985^**

0.342

0.946^**

0.714^*

0.620

1

Zn

0.949^**

0.319

0.914^**

0.809^**

0.779^**

0.961^**

1

OC

0.647^*

−0.097

0.646^*

0.277

0.161

0.580

0.500

1