Table 5 Statistical characteristics of soil heavy metal of paddy fields in Fujian Province.

From: Pollution characteristics and ecological risk assessment of heavy metals in paddy fields of Fujian province, China

HMs

Mean (mg/kg)

SD (mg/kg)

Max (mg/kg)

Min (mg/kg)

CV (%)

Point exceeded rate (%)

Background value (mg/kg)

Standard value (mg/kg)

Cd

0.26

0.12

1.02

0.06

45.02

32.72

0.05

0.30

Cr

49.08

37.12

283.38

6.58

75.62

0.37

41.3

250

Pb

91.94

41.03

312.31

34.36

44.63

0.74

34.9

250

As

22.60

7.99

69.44

9.22

35.35

15.07

5.87

30

Cu

27.98

14.99

113.91

6.18

53.56

9.19

21.6

50

Ni

27.46

15.33

77.72

7.56

55.83

16.54

13.5

40

Co

10.57

4.68

30.41

2.46

44.28

–

7.41

–

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