Table 4 The Concentration of Trace Element in Soil, Soybean and Earthworm Around the Brick Plant (mg/kg)

From: The Environmental Geochemistry of Trace Elements and Naturally Radionuclides in a Coal Gangue Brick-Making Plant

 

   Soil

   Soybean

   Earthworm

  
 

Range

Mean

Range

Mean

Range

Mean

Huainan Soil

Permissible value in food

As

14.9–28.5

20.9 ± 3.7

0.08–1.08

0.51 ± 0.31

2.11–38.9

19.5 ± 10.4

10.5

<0.7

Cd

0.08–0.23

0.14 ± 0.43

0–0.18

0.06 ± 0.05

0.19–3.59

1.22 ± 0.89

0.06

<0.2

Cr

112–123

117 ± 5

0.21–0.96

0.42 ± 0.19

1.81–32.8

13.4 ± 7.9

91.5

<1.0

Co

14.8–18.7

16.6 ± 1.17

0.04–0.24

0.14 ± 0.08

1.45–5.79

3.23 ± 1.56

12

 

Cu

52.2–67.4

57.8 ± 4.2

1.18–6.72

3.48 ± 1.30

7.75–23.7

13.9 ± 4.0

30.7

<10

Hg

0.05–0.11

0.06 ± 0.06

0.00–0.03

0.01 ± 0.01

0.04–0.13

0.06 ± 0.04

0.04

<0.02

Ni

41.8–54.5

48.6 ± 4.2

1.35–6.31

3.14 ± 1.40

1.84–17.2

7.35 ± 3.50

32

<1.0

Pb

27.9–42.1

31.1 ± 3.4

0.15–0.72

0.35 ± 0.16

0.15–12.3

3.84 ± 3.63

23.5

<0.2

Se

0.18–0.53

0.31 ± 0.09

0.17–0.32

0.24 ± 0.12

0.17–0.46

0.25 ± 0.12

0.29

<0.3

Sn

4.35–5.03

4.59 ± 0.19

0.27–0.68

0.52 ± 0.22

0.34–0.84

0.48 ± 0.23

2.58

 

V

98.2–113

107 ± 4

0.05–0.62

0.26 ± 0.14

1.73–29.9

12.7 ± 6.6

96

 

Zn

71.6–90.7

80.5 ± 5.5

6.81–24.9

14.8 ± 4.6

39.8–57.8

46.5 ± 13.2

58.3

 
  1. The background value of toxic element in Huainan soil is from ref. 44 and the permissible value in food is according to GB2762-2005.
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