Fig. 9

Norfloxacin concentration’s impact on absorbance. Conditions: 1–30 µg of norfloxacin per milliliter with a λ_max of 511 nm, Subsequently, 15 min of heating at 100 °C, 1.0 mL of Fe³⁺ (0.002 mol/L), 1.5 mL (0.014 mol/L), as well as 1,10 phenanthroline were diluted to 10 mL