title: Aqueous phototransformation of bisphenol S: the competitive radical-attack pathway to p-hydroxybenzenesulfonic acid.
abstract: The kinetics, environmental influencing factors, products and reaction mechanism of aqueous phototransformation of bisphenol S (BPS), as an alternative to bisphenol A, which is of environmental concern, were investigated. p-Hydroxybenzenesulfonic acid, as the major transformation product was confirmed by gas chromatography - mass spectrometry, electrospray ionization, ¹H nuclear magnetic resonance and fluorescence spectrum analysis. A reaction pathway was proposed based on the reactive oxygen species related results by electron paramagnetic resonance and radical traps. The competition of the excited state of BPS between transferring electron to O₂ to •O₂(-) and directly oxidizing H₂O to •OH was revealed.
authors.affiliation: School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China E-mail: majia@ucas.ac.cn; Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai Shandong 264003, China.
authors.forename: Xiaowen
authors.initials: X
authors.lastname: Wang
authors.affiliation: School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China E-mail: majia@ucas.ac.cn.
authors.forename: Jiahai
authors.initials: J
authors.lastname: Ma
authors.affiliation: Beijing Mass Spectrum Center, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
authors.forename: Zhenpeng
authors.initials: Z
authors.lastname: Wang
authors.affiliation: School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China E-mail: majia@ucas.ac.cn.
authors.forename: Rongrong
authors.initials: R
authors.lastname: Guo
authors.affiliation: Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai Shandong 264003, China.
authors.forename: Xuefeng
authors.initials: X
authors.lastname: Hu
mesh_terms: D001557:Benzenesulfonates / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D010636:Phenols / Q000737:chemistry*; D055668:Photochemical Processes; D021241:Spectrometry, Mass, Electrospray Ionization; D013056:Spectrophotometry, Ultraviolet; D013450:Sulfones / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D000098831:Bisphenol S Compounds
chemical_list: D001557:Benzenesulfonates; D010636:Phenols; D013450:Sulfones; D014874:Water Pollutants, Chemical; C543008:bisphenol S; D000098831:Bisphenol S Compounds