Doxycycline Degradation by the Oxidative Fenton Process

Figure 5

LCMS-IT-TOF results of doxycycline samples submitted to the Fenton process (a) for 60 s, retention time of 41 s, (b) for 180 s, retention time of 54 s. Operating conditions of the Fenton process:  mg/L,  mg/L, and °C. A, B, D, and E: doxycycline degradation products with , 104, 154, and 502 g/mol, respectively.

(a)

(b)