Reaction mechanism of 3-chlorophenol with OH, H in aqueous solution.
The reaction mechanism of 3-chlorophenol with OH, H in aqueous solution was studied by transient technology. The 3-chlorophenol aqueous solutions have been saturated with air or N2 previously. Under alkaline condition, the reaction of OH radical with 3-chlorophenol produces 3-chlorinated phenoxyl radical, with the absorption peaks at 400 nm and 417 nm. Under neutral condition, the reaction of OH radical with 3-chlorophenol produces OH-adduct with the maximal absorption at about 340 nm. And in acid solution, the reaction of H with 3-chlorophenol produces H-adduct with the maximal absorption at about 320 nm. 3-chlorophenol is compared with 4-and 2-chlorophenols from the free radical pathways. The results show that the positions of chlorine on the aromatic ring strongly influence the dehalogenation and degradation process.
Zhu
Jie
J
Institute of Environmental Science, Fudan University, Shanghai 200433, China. jiezero@163.com
Chen
Ye-Fei
YF
Dong
Wen-Bo
WB
Pan
Xun-Xi
XX
Hou
Hui-Qi
HQ
D000042:Absorption; D002733:Chlorophenols / Q000737:chemistry*; D006859:Hydrogen / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D017665:Hydroxyl Radical / Q000737:chemistry*; D016877:Oxidants / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis*
D002733:Chlorophenols; D016877:Oxidants; D014874:Water Pollutants, Chemical; D017665:Hydroxyl Radical; D006859:Hydrogen; C030682:3-chlorophenol