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Degradation of sulfamethoxazole (SMX) and sulfadimethoxine (SDM) by (A, B) PMS and (C, D) PDS alone, in the presence of FeaqII and FeaqII—bicarbonate ([SMX]0 = [SDM]0 = 5.0 μM; initial pH = 7.0. The PMS system: [PMS]0 = 0.04 mM; [FeaqII]0 = 0.2 mM; [bicarbonate]0 = 0.5 mM. The PDS system: [PDS]0 = 1.0 mM; [FeaqII]0 = 2.0 mM; [bicarbonate]0 = 5.0 mM).
