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Environmental Sciences Europe

Table 3 Detected Pb concentrations in soils and vegetables after recycling of sediments with Pb content of 346 mg/kg, 300 mg/kg, and 220 mg/kg

From: Pilot-scale electro-kinetic remediation of lead polluted field sediments: model designation, numerical simulation, and feasibility evaluation

EXP

Sample

Pb (mg/kg)

Soil

Brassica juncea

Brassica pekinensis

Spinacia oleracea L.

Exogenous Pb (346 mg/kg)

1

46.7

0.32

0.16

0.13

2

44.1

0.37

0.20

0.16

3

46.5

0.34

0.15

0.14

4

45.8

0.43

0.22

0.11

Control standard valuea

90.0

0.10

0.10

0.10

Background valueb

18.4

–

–

–

Exogenous Pb (300 mg/kg)

5

39.2

0.27

0.13

0.06

6

40.9

0.22

0.14

0.09

7

38.4

0.15

0.09

0.08

8

39.6

0.18

0.16

0.07

Control standard value

90.0

0.10

0.10

0.10

Background value

16.9

–

–

–

Exogenous Pb (220 mg/kg)

9

25.4

0.09

0.04

0.04

10

24.3

0.08

0.06

0.02

11

24.7

0.05

0.07

0.03

12

23.9

0.07

0.08

0.05

Control standard value

90.0

0.10

0.10

0.10

Background value

17.8

–

–

–

  1. aControl standard value: the control standard value of Pb content in soils and vegetables requested by the Soil Environmental Quality Risk Control Standard for Soil Contamination of Agricultural Land (GB15618-2018) and the National Food Safety Control Standard for Contaminant (GB2762-2017)
  2. bBackground value: the detected Pb content in soils and vegetables without recycling of Pb-polluted sediments
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