The Scientific World Journal

Research Article

Evaluation of Phytoavailability of Heavy Metals to Chinese Cabbage (Brassica chinensis L.) in Rural Soils

Table 5

Ranges and means of extractable heavy metals in the studied soils. The unit for the Rhizon soil solution sampler is μg L⁻¹, and the others are mg kg⁻¹.

Element

Rhizon

H₂O

NaNO₃

CaCl₂

HOAc

HCl

EDTA

DTPA

Range

Mean

Range

Mean

Range

Mean

Range

Mean

Range

Mean

Range

Mean

Range

Mean

Range

Mean

0.24–128

8.33

0.06–0.38

0.10

0.06–7.18

0.40

0.02–14.5

0.70

0.04–12.1

0.92

0.11–19.5

1.30

0.15–18.9

1.29

0.06–16.4

0.90

0.77–105

16.7

0.28–1.55

0.49

0.14–0.77

0.31

0.02–1.16

0.12

0.06–11.0

1.18

0.37–1630

95.4

1.04–1090

107

0.39–332

36.9

0.01–1670

115

0.20–10.3

0.96

0.10–2.91

0.36

0.05–9.53

0.74

0.20–125

9.90

0.60–330

42.2

0.17–88.2

11.5

0.11–38.1

3.69

2.00–33.6

8.89

0.01–6.64

0.35

0.18–15.5

1.09

0.19–41.9

2.35

0.04–33.0

1.77

3.00–1850

187

1.05–1750

169

0.44–429

50.0

0.20–4310

225

0.03–1.26

0.14

0.04–4.75

0.74

0.06–15.9

1.52

0.03–4.06

0.77

0.86–1400

94.4

0.55–638

63.5

0.47–119

16.0