Photodegradation of 2,4-Dichlorophenol in Aqueous Systems under Simulated and Natural Sunlight

Table 3

Determined values of EC₅₀, the effective concentration of the sample that causes 50% decrease in the light output of the Vibrio fischeri organism under 15 minutes.

Time (min)	EC50 (%)	2,4-DCP conc. in reaction solution (mg L^−1)
0	2.69	47.80
5	4.05	7.74
10	6.06	0.96
25	9.64	0.81