Pesticides

Spiked level,

µg/L

Lake water

Ground water

River water

%RR

%RSD

%RR

%RSD

%RR

%RSD

Carbaryl

0

nd

-

nd

-

nd

-

50

106.6

7.8

92.7

6.4

89.1

2.3

Atrazine

0

nd

-

nd

-

nd

-

50

98.1

3

92.5

2.9

86.8

1.6

Propazine

0

nd

-

nd

-

nd

-

50

96.5

1.6

93.6

0.8

85.7

2

Chlorothalonil

0

nd

-

nd

-

nd

-

50

75.5

6.4

87.1

1.5

86.9

10.1

Terbutryn

0

nd

-

nd

-

nd

-

50

99.8

4.6

85.2

3.8

83.3

1.6

Dimethametryn

0

nd

-

nd

-

nd

-

50

98.9

1

83.4

5.9

83.8

4.9