Fig. 2. Effect of molecular weight of polyethylene glycol (PEG) on the 2,4-dichlorophenol (2,4-DCP) removal by horseradish. Reaction mixture volume = 5 mL; horseradish amount = 0.02 g; 2,4-DCP concentration = 9 mM; H₂O₂ concentration = 9 mM; PEG concentration = 0.1 g/L; pH = 7.0; incubation time = 3 h; incubation temperature = 25°C.