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Table 1 Properties of studied soil samples

From: Effects of soil properties and biosurfactant on the behavior of PAHs in soil-water systems

Property

Under plant

Ditch

pH(CaCl2)

6.96

7.02

Organic matter

8.65

4.3

C:N ratio

12.55

8.98

Cation exchange capacity (cmol/kg)

29.34

38.79

Coarse sand >0.25 mm (%)

14.5

2.4

Fine sand 0.25–0.02 (%)

42.5

35.6

Silt 0.02–0.002 mm (%)

15

25

Clay < 0.002 mm (%)

28

37

Classificationa

Sand loam

Clay loam

Clay mineralogy (% wt)

Smectite

6.2

7.8

 

Illites

9.3

9.6

 

Kaolinite

2.4

2.9

 

Quartz

54.8

42.7

 

Potash feldspar

13.5

23.6

 

Plagioclase

10.4

9.7

 

Amphibole

1.7

1.7

 

Calcite

1.7

1.2

  1. aInternational classification system.