title: Analysis of a complex produced in the Fenton oxidation process.
abstract: The absorbances of different concentrations of Fe(2+), Fe(3+) and H2O2 were investigated by UV-visible spectrophotometry without separating the substances. The law of complex formation was studied by considering changes in the UV-vis spectra of mixtures of these three substances. The results show that upon eliminating the influence of the substrate, an iron-based complex was present in the Fenton reaction, which exhibited substantial absorbance from 190 to 500 nm. Therefore, the presence of an unknown complex in the Fenton oxidation process was verified and its concentration varied with a change in the concentration of hydrogen peroxide. This study provides a strong foundation for further studies into the mechanism of traditional hydroxyl radical theory of the Fenton reaction.
authors.affiliation: College of Marine Science and Engineering, Tianjin University of Science & Technology, Tianjin 300457, China E-mail: wangc88@163.com.
authors.forename: Chang
authors.initials: C
authors.lastname: Wang
authors.affiliation: College of Marine Science and Engineering, Tianjin University of Science & Technology, Tianjin 300457, China E-mail: wangc88@163.com.
authors.forename: Siyue
authors.initials: S
authors.lastname: Zhang
authors.affiliation: Department of Environmental Chemical Engineering, Kogakuin University, Tokyo 192-0015, Japan.
authors.forename: Sakai
authors.initials: S
authors.lastname: Yuji
authors.affiliation: College of Marine Science and Engineering, Tianjin University of Science & Technology, Tianjin 300457, China E-mail: wangc88@163.com.
authors.forename: Zongpeng
authors.initials: Z
authors.lastname: Zhang
mesh_terms: D006861:Hydrogen Peroxide / Q000737:chemistry*; D007501:Iron / Q000737:chemistry*; D010084:Oxidation-Reduction; D013056:Spectrophotometry, Ultraviolet
chemical_list: C045076:Fenton's reagent; D006861:Hydrogen Peroxide; D007501:Iron