Figure 9.

Anti-interference ability of probe P1 ((A) for Fe³⁺ and (B) for Cr³⁺) and probe P2 ((C) for Fe³⁺ and (D) for Cr³⁺) against various interferents (C_polymer = 0.1 mg/mL, C_ions = 50 µM, E_x = 365 nm).