Metal

Season

Dry

% total concentration

Rainy

% total concentration

Soil fraction

(mg·kg⁻¹)

(mg·kg⁻¹)

Cd

Soluble

0.003

(0.001)

0.96

0.004

(0.0004)

1.08

Exchangeable

0.013

(0.001)

3.52

0.014

(0.001)

3,95

Sol + Exch

0.016

(0.002)

4.48

0.018

(0.01)

5.03

Cr

Soluble

0.01*

(0.002)

0,02

0.030*

(0.007)

0.06

Exchangeable

0.03*

(0.003)

0.05

0.04*

(0.003)

0.09

Sol + Exch

0.04*

(0.005)

0.08

0.07*

(0.006)

0.15

Cu

Soluble

0.012*

(0.002)

0.04

0.114*

(0.007)

0.36

Exchangeable

0.026*

(0.001)

0.08

0.211*

(0.01)

0.67

Sol + Exch

0.038*

(0.003)

0.12

0.326*

(0.02)

1.03

Pb

Soluble

0.03

(0.004)

0.12

0.03

(0.003)

0.14

Exchangeable

0.09*

(0.01)

0.40

0.10*

(0.01)

0.45

Sol + Exch

0.11*

(0.01)

0.52

0.13*

(0.01)

0.58

Zn

Soluble

0.58*

(0.08)

0.59

1.28*

(0.20)

1.34

Exchangeable

1.40*

(0.13)

1.43

2.16*

(0.27)

2.28

Sol + Exch

1.98*

(0.19)

2.02

3.44*

(0.45)

3.63

Fe

Soluble

4.75*

(1.78)

0.04

14.26*

(1.25)

0.13

Exchangeable

8.96*

(1.07)

0.08

37.21*

(3.79)

0.33

Sol + Exch

13.71*

(2.81)

0.12

51.47*

(4.21)

0.46

Mn

Soluble

1.28*

(0.16)

0.33

2.17*

(0.35)

0.49

Exchangeable

15.64*

(1.54)

4.08

43.27*

(3.11)

9.77

Sol + Exch

16.92*

(1.62)

4.41

45.44*

(3.43)

10.26