title: Degradation of monofluorophenols in water irradiated with gaseous plasma.
abstract: Decomposition of aqueous monofluorophenols (MFPs) was investigated by contact glow discharge electrolysis (CGDE). During CGDE, both MFPs and the corresponding total organic carbon (TOC) in water were consumed smoothly, suggesting that carbon atoms of benzene nucleus could be eventually mineralized to inorganic carbon (IC). And all the fluorine atoms in the MFPs were equally converted to fluoride ions. Based on the primary intermediates from each starting materials, it showed that aromatic hydroxylation preferentially occurred at the para- or ortho- position to the phenolic OH group of each MFPs. The disappearance of both MFPs and TOC followed the first-order rate law. The apparent rate constants for the decay of MFPs were independent from the pKa values of MFPs.
authors: Graduate School of Engineering, Saitama Institute of Technology, 1690 Fusaiji, Fukaya, Saitama 3690293, Japan.  yanghaiming80@sina.com
authors: Haiming
authors: H
authors: Yang
authors: Graduate School of Engineering, Saitama Institute of Technology, 1690 Fusaiji, Fukaya, Saitama 3690293, Japan.
authors: Giya
authors: G
authors: Mengen
authors: Graduate School of Engineering, Saitama Institute of Technology, 1690 Fusaiji, Fukaya, Saitama 3690293, Japan.
authors: Yuki
authors: Y
authors: Matsumoto
authors: Graduate School of Engineering, Saitama Institute of Technology, 1690 Fusaiji, Fukaya, Saitama 3690293, Japan. Electronic address: tezuka@sit.ac.jp.
authors: Meguru
authors: M
authors: Tezuka
mesh_terms: D002244:Carbon / Q000737:chemistry; D004572:Electrolysis; D007700:Kinetics; D010636:Phenols / Q000737:chemistry*; D058626:Plasma Gases / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
chemical_list: D010636:Phenols; D058626:Plasma Gases; D014867:Water; D002244:Carbon
keywords: contact glow discharge electrolysis; decomposition; first-order rate law; fluorophenol; pK(a)