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Chemical and Biological Technologies in Agriculture

Table 1 Concentration of 3 heavy metals in sludge cake, Bang Len soil (clay), Dindeedee soil (plant soil) and crushed material of paraffin-coated flower pot

From: Effects of paraffin external coating on the degradable flower pot made of sludge cake

Sample

Concentration (mg kg−1)

Lead (Pb)

Nickel (Ni)

Copper (Cu)

Sludge cake

0.588

0.167

10.40

Bang Len soil (Clay)

2.93

2.14

19.20

100% Soil (Dindeedee soil: plant soil)

0.003

0.001

14.50

50% Soil + 50% FP

0.968

0.668

14.61

100% FP

2.388

1.644

15.45

Standard

400a

1600a

150b

  1. Report from Office of Public Health and Environmental Technology Services, Faculty of Public Health, Mahidol University in March 2017
  2. FP flower pot
  3. a Soil Quality Standard, Thailand [22]
  4. b Criteria for managing contaminated sites in British Columbia, Canada [25]
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