“…However, the oxidation abilities of halogen radicals (except for Clc) to organic matters are selective, for example, they can react faster with certain organic compounds (e.g., alkenes, aromatics, and organothiols) (k ¼ 10 6 to 10 10 M À1 s À1 ) than other organic compounds (e.g., aliphatic molecules) (k ¼ 10 3 to 10 6 M À1 s À1 ). 39 Therefore, the new second generation radicals may also be responsible for the degradation of FLU due to its complex structure. Our previous studies investigated the degradation of sulfamethoxazole (SMX) and ooxacin (OFL) by UV/PDS in different water samples.…”