Reaction mechanism of 3-chlorophenol with OH, H in aqueous solution

Article type: Research Article

Authors: Zhu, Jie | Chen, Ye-fei | Dong, Wen-bo | Pan, Xun-xi | Hou, Hui-qi

Affiliations: Institute of Environmental Science, Fudan University, Shanghai 200433, China

Abstract: The reaction mechanism of 3-chlorophenol with OH, H inaqueous 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.

Keywords: 3-chlorophenol, OH radical, atomic H, microscopic

Journal: Journal of Environmental Sciences, vol. 15, no. 1, pp. 55-59, 2003