The GC-MS Analysis of Organic Intermediates from the TiO2 Photocatalytic Treatment of Water Contaminated by Lindane (1α,2α,3/3,4α,5α,6β- hexachlorocyclohexane)+
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Chantal Guillard
Abstract
Elimination from water of lindane, a common soil insecticide whose occurrence in groundwaters used as sources of drinking water is of great concern, was shown to be achieved by the TiO2-UV system. Gas chromatography-mass spectrometry analyses of a photocatalytically treated aqueous solution initially containing 3.44 mmol/L (=1g/L) lindane indicated that several specified or unspecified isomers were formed as intermediate products and pertained to the following chemical categories: chlorocyclohexanes, chlorocyclohexenes, chlorobenzenes, chlorophenols, chloropropanes and chloropropanones, as well as a pentachlorocyclohexenone isomer and 3,4dichloro-2,5-furandione (presumably produced by dehydration of dichlorobutenedioic acid during the analysis). Compared to lindane, these intermediates were generally oxidized and most of them contained a smaller number of xenobiotic C-Cl bonds. However, their nature showed that chlorine and hydrogen atoms were not only abstracted from the CHCl groups constituting lindane but also added to them. Accordingly, this proved that the reduction of the organics occurred in addition to their oxidation. Some conclusions concerning the lindane degradation pathways are also presented.
© 2017 by Walter de Gruyter Berlin/Boston
Articles in the same Issue
- Titelei
- Inhalt
- Editorial
- Editorial policy
- Feature Articles
- Figures-of-Merit for the Technical Development and Application of Advanced Oxidation Processes
- The Use of Iron in Advanced Oxidation Processes
- Research Articles
- Photodegradation of Surfactants XVII Photo-oxidation Processes in Amphoteric Surfactants Catalyzed by Irradiated TiO2 Suspensions
- Mechanisms of Photocatalysis: The Reductive Degradation of Tetrachloromethane in Aqueous Titanium Dioxide Suspensions
- Generation Efficiency of the Hydroxyl Radical Adduct of the DMPO Spin Trap in Homogeneous and Heterogeneous Media
- The GC-MS Analysis of Organic Intermediates from the TiO2 Photocatalytic Treatment of Water Contaminated by Lindane (1α,2α,3/3,4α,5α,6β- hexachlorocyclohexane)+
- Investigation and Properties of the Discharge in Dielectric Barrier Reactors Decomposition of Toluene, o-Xylene, Trichloroethylene, and Their Mixture Using a BaTiO3 Packed-Bed Plasma Reactor
- Decomposition of Toluene, o-Xylene, Trichloroethylene, and Their Mixture Using a BaTiO3 Packed-Bed Plasma Reactor
- Plasma Assisted Oxidation of Propene
- Efficient Visible Light Induced Degradation of the Brightener Tinopal CBS-X. Accelerated Bacterial Adsorption Observed after Photocatalytic Pretreatment
- Abiotic Oxidative Degradation of Atrazine on Zero-Valent Iron Activated by Visible Light
Articles in the same Issue
- Titelei
- Inhalt
- Editorial
- Editorial policy
- Feature Articles
- Figures-of-Merit for the Technical Development and Application of Advanced Oxidation Processes
- The Use of Iron in Advanced Oxidation Processes
- Research Articles
- Photodegradation of Surfactants XVII Photo-oxidation Processes in Amphoteric Surfactants Catalyzed by Irradiated TiO2 Suspensions
- Mechanisms of Photocatalysis: The Reductive Degradation of Tetrachloromethane in Aqueous Titanium Dioxide Suspensions
- Generation Efficiency of the Hydroxyl Radical Adduct of the DMPO Spin Trap in Homogeneous and Heterogeneous Media
- The GC-MS Analysis of Organic Intermediates from the TiO2 Photocatalytic Treatment of Water Contaminated by Lindane (1α,2α,3/3,4α,5α,6β- hexachlorocyclohexane)+
- Investigation and Properties of the Discharge in Dielectric Barrier Reactors Decomposition of Toluene, o-Xylene, Trichloroethylene, and Their Mixture Using a BaTiO3 Packed-Bed Plasma Reactor
- Decomposition of Toluene, o-Xylene, Trichloroethylene, and Their Mixture Using a BaTiO3 Packed-Bed Plasma Reactor
- Plasma Assisted Oxidation of Propene
- Efficient Visible Light Induced Degradation of the Brightener Tinopal CBS-X. Accelerated Bacterial Adsorption Observed after Photocatalytic Pretreatment
- Abiotic Oxidative Degradation of Atrazine on Zero-Valent Iron Activated by Visible Light
