In the present study, we demonstrated that the presence of cysteine could remarkably enhance the degradation of atrazine by Fe(3)O(4)/persulfate system. The results of electron paramagnetic resonance (EPR) spectra confirmed the combination of cysteine and Fe(3)O(4) exhibited much higher activity on activation of persulfate to generate more SO(4)(•-) and •OH than Fe(3)O(4) alone. At pH of 3.0, SO(4)(•-) and •OH contributed to about 58.2% and 41.8% of atrazine removal respectively, while •OH gradually dominated the oxidation of atrazine from...
