Table 2 Descriptive statistics of the soil heavy metal concentrations at 15–30 cm in Guelph community gardens (in ppm).

From: Are heavy metals in urban garden soils linked to vulnerable populations? A case study from Guelph, Canada

Variable

Zn

Rb

Sr

Cd

Ce

Pb

As

Se

Mean

184.85

12.90

55.56

0.71

34.75

38.56

4.22

0.97

SD

144.20

2.19

29.33

0.26

6.84

30.01

7.15

0.82

Median

124.96

13.05

47.28

0.63

34.19

26.02

2.82

0.64

Minimum

81.59

8.82

16.83

0.38

23.08

14.47

ND*

ND*

Maximum

546.67

16.74

136.04

1.23

52.50

124.41

31.57

3.11

CV

78.01

16.97

52.78

35.93

19.68

77.82

169.71

84.70

CCME limits

250

–

–

1.4

–

70

12

1

  1. *ND non-detectable.
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