Compound

Temperature

( ° C)

pH

Rate Constants ( Observed)

Autoclaved

(ka, day-1)

Non-autoclaved

(kna, day-1)

a -endosulfan

25

5

0.0470

0.0067

b -Endosulfan

25

5

0.0076

0.0523

a -endosulfan

30

5

0.0404

0.0680

b -Endosulfan

30

5

0.0025

0.0308

a -endosulfan

40

5

0.0070

0.0124

b -Endosulfan

40

5

0.0103

0.0290

a -endosulfan

25

8

0.2097

0.2670

b -Endosulfan

25

8

0.2240

0.2776

a -endosulfan

30

8

0.4652

0.3161

b -Endosulfan

30

8

0.4880

0.4704

a -endosulfan

40

8

0.5464

0.6271

b -Endosulfan

40

8

0.7597

0.8205

 

 Table 3: Summary of Rate Constants for Each pH, Temperature, and Condition Tested