Sample

pH

Origin

Reduction

Pesti Resid

Before

After

% Reduction

BPH

7.7

2

2

Atrazine

0.2

ND

100

Metolachlor

0.16

0.12

25

CLC

7.7

4

4

Atrazine

6.48

0.06

99.1

Desethatz

0.74

0.55

25.7

Metolachlor

1.08

ND

100

Bifenthrin

0.02

0

100

CDG

7.2

2

2

Atrazine

0.68

ND

100

Metolachlor

0.84

0.73

13.1

BBH

7.2

4

4

Atrazine

1.78

1.26

29.2

Metolachlor

1.16

1.01

12.9

Acetolachlor

0.06

ND

100

Azoxystrobin

0.02

ND

100

BRH

7.3

8

8

Atrazine

6.2

0.64

89.7

Clomazone

2.4

1.54

35.8

Desethatz

0.62

0.38

38.7

Metribuzin

0.34

0.17

50

Metolachlor

17.2

15.32

10.9

Propanil

0.08

0.03

62.5

Metalaxyl

0.08

0.06

25

Dimethenamid

0.16

0.12

25

LBT

7.7

5

3

Desethatz

0.22

0.17

22.7

Atrazine

0.6

ND

100

Metolachlor

0.36

ND

100

Glyphosate

ND

ND

ND

AMPA

ND

ND

ND

BCH

7.1

6

5

Atrazine

6.24

1.4

77.6

Desethatz

0.54

ND

100

Acetolachlor

0.28

ND

100

Metribuzin

0.36

ND

100

Metolachlor

3.9

ND

100

Clomazone

0.04

ND

ND

TRH2

7.2

6

5

Atrazine

0.38

0.16

57.9

Desethatz

0.26

0.06

76.9

Metribuzin

0.3

ND

100

Metolachlor

3.4

ND

100

Clomazone

0.18

ND

ND

Azoxystrobin

0.06

0.02

66.7

BPI

7.2

7

6

Atrazine

0.72

0.22

69.4

Desthatz

0.2

ND

100

Metribuzin

0.28

ND

100

Metolachlor

0.74

ND

100