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Table 2 Contributions of PM and surfactants to increasing the CYP bioavailability in soil

From: Reduction of soil contamination by cypermethrin residues using phytoremediation with Plantago major and some surfactants

Days

Treatment

CYP mg kg−1

% Removal

% Contribution

1

C: CCSS

9.86 a

1.40

–

0.0

T1: CCS

9.47 b

5.30

Microorganisms (T1 − C)

3.90

T2: CCSS + PM

9.07 c

9.30

PM (T2 − C)

7.9

T3: CCS + PM

8.24 d

17.60

Combination (T3 − C)

16.20

T4: CCS + PM +SiO2

6.92 g

30.80

SiO2 (T4 − T3)

13.20

T5: CCS + PM +HA

7.74 e

22.60

HA (T5 − T3)

5.00

T6: CCS + PM + HPβCD

7.23 f

27.70

HPβCD (T6 − T3)

10.10

T7: CCS + PM + Tw 80

7.98 de

20.20

Tw 80 (T7 − T3)

2.60

3

C: CCSS

9.34 a

6.60

–

0.0

T1: CCS

8.46 b

15.40

Microorganisms (T1 − C)

8.80

T2: CCSS + PM

8.07 c

19.30

PM (T2 − C)

12.70

T3: CCS + PM

7.39 d

26.10

Combination (T3 − C)

19.50

T4: CCS + PM +SiO2

6.29 f

37.10

SiO2 (T4 − T3)

11.00

T5: CCS + PM +HA

6.90 e

31.00

HA (T5 − T3)

4.90

T6: CCS + PM + HPβCD

6.76 e

32.40

HPβCD (T6 − T3)

6.30

T7: CCS + PM + Tw 80

7.08 d

29.20

Tw 80 (T7 − T3)

3.10

7

C: CCSS

8.79 a

12.10

–

0.0

T1: CCS

7.40 b

26.00

Microorganisms (T1 − C)

13.90

T2: CCSS + PM

7.17 b

28.30

PM (T2 − C)

16.20

T3: CCS + PM

6.70 c

33.00

Combination (T3 − C)

20.90

T4: CCS + PM +SiO2

5.21 g

47.90

SiO2 (T4 − T3)

14.90

T5: CCS + PM +HA

5.91 e

40.90

HA (T5 − T3)

7.90

T6: CCS + PM + HPβCD

5.53 f

44.70

HPβCD (T6 − T3)

11.70

T7: CCS + PM + Tw 80

6.16 d

38.40

Tw 80 (T7 − T3)

5.40

10

C: CCSS

7.64 a

23.60

–

0.0

T1: CCS

5.97 b

40.30

Microorganisms (T1 − C)

16.70

T2: CCSS + PM

5.74 b

42.60

PM (T2 − C)

19.00

T3: CCS + PM

5.30 c

47.00

Combination (T3 − C)

23.40

T4: CCS + PM +SiO2

3.57 f

64.30

SiO2 (T4 − T3)

17.30

T5: CCS + PM +HA

4.10 e

59.00

HA (T5 − T3)

12.00

T6: CCS + PM + HPβCD

4.01 e

59.90

HPβCD (T6 − T3)

12.90

T7: CCS + PM + Tw 80

4.74 d

52.60

Tw 80 (T7 − T3)

5.60

14

C: CCSS

6.80 a

32.00

–

0.0

T1: CCS

3.84 b

61.60

Microorganisms (T1 − C)

29.60

T2: CCSS + PM

3.71 b

62.90

PM (T2 − C)

30.90

T3: CCS + PM

3.16 c

68.40

Combination (T3 − C)

36.40

T4: CCS + PM +SiO2

1.58 f

84.20

SiO2 (T4 − T3)

15.80

T5: CCS + PM +HA

2.22 e

77.80

HA (T5 − T3)

9.40

T6: CCS + PM + HPβCD

2.05 e

79.50

HPβCD (T6 − T3)

11.10

T7: CCS + PM + Tw 80

2.73 d

72.70

Tw 80 (T7 − T3)

4.30

  1. Different letters represent significant differences (Duncan’s test significant difference test at p < 0.05) among all treatments
  2. CCSS, CYP-contaminated sterilized soil; CCS, CYP-contaminated soil; PM, Plantago major; SiO2, liquid silicon dioxide; HPβCD, 2-hydroxypropyl-beta-cyclodextrin; HA, liquid humic acid; Tw80, Tween 80