Concentration(PPM)

UV-A(2.0 mW/cm2)

UV-B(0.5 mW/cm2)

Sunlight

25

0.170

0.159

0.197

50

0.455

0.309

0.437

75

0.690

0.384

0.424

100

0.511

0.360

0.097
Table 2 (a): Generation of superoxide in benzo(a)pyrene on exposing in UV-A, UV-B, and Sunlight for 20mins.
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