Table 1 Basic statistical parameters of potentially toxic metal(loid)s, pollution index, and enrichment factors in the soil (n = 20).

From: Distribution characteristics of potentially toxic metal(loid)s in the soil and in tea plant (Camellia sinensis)

  

As

Cd

Cr

Cu

Ni

Pb

Zn

Contents in soil

Mean (mg/kg)

47.58

0.09

99.80

77.13

73.70

76.07

183.30

Median (mg/kg)

47.80

0.08

101.00

80.50

75.10

73.50

179.50

Stdev (mg/kg)

11.29

0.03

11.53

13.66

15.88

18.76

28.18

CV%

4.21

2.79

8.66

5.65

4.64

4.06

6.51

Minimum (mg/kg)

29.40

0.04

61

53.9

33.9

50.1

138

Maximum (mg/kg)

70.20

0.16

115

95.1

98.8

120.5

230

Pollution index

Mean

1.19

0.30

0.67

1.54

1.23

1.09

0.92

Median

1.21

0.27

0.67

1.61

1.25

1.05

0.90

Stdev

0.28

0.11

0.08

0.27

0.26

0.27

0.14

CV%

4.21

2.79

8.66

5.65

4.64

4.06

6.51

Minimum

0.74

0.13

0.41

1.08

0.57

0.72

0.69

Maximum

1.76

0.53

0.77

1.90

1.65

1.72

1.15

Enrichment factor

Mean

17.93

0.31

0.68

0.94

0.65

4.19

1.77

Median

17.56

0.28

0.67

0.95

0.67

3.78

1.71

Stdev

4.34

0.13

0.09

0.12

0.06

1.55

0.30

CV%

4.13

2.42

7.79

7.79

10.80

2.71

5.88

Minimum

11.88

0.15

0.53

0.73

0.55

2.95

1.55

Maximum

25.68

0.66

0.82

1.25

0.75

10.00

2.96

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