UV exposure (dose) 10 ppm 100 ppm 500 ppm 1000 ppm
UV-A (1.4mW/cm2) 5.3 5.8 6.6 7.4
UV-B (0.4mW/cm2) No 4.5 4.7 5.2
Dark No No No No
Table 6: Inhibition zone at different concentration of Anthracene on exposing to UV-A, UV-B and sunlight.