title: Fenton degradation of Cartap hydrochloride: identification of the main intermediates and the degradation pathway.
abstract: The advanced oxidation of Cartap hydrochloride (Cartap) promoted by the Fenton system in an aqueous medium was investigated. Based on total organic carbon, chemical oxygen demand and high-performance liquid chromatography, the oxidation of Cartap is quite efficient by the Fenton system. Its long chain is easily destroyed, but the reaction does not proceed to complete mineralization. Ion chromatography detection indicated the formation of acetic acid, propionic acid, formic acid, nitrous acid and sulfuric acid in the reaction mixtures. Further evidence of nitrogen monoxide and sulfur dioxide formation was obtained by using a flue gas analyzer. Monitoring by gas chromatograph-mass spectrometer demonstrated the formation of oxalic acid, ethanol, carbon dioxide, and L-alanine ethylamide. Based on these experimental results, plausible degradation pathways for Cartap mineralization in an aqueous medium by the Fenton system are proposed.
authors.affiliation: Department of Environmental Science and Engineering, Xiangtan University, Key Laboratory Heavy Metal Pollution Control, College of Hunan Province, Xiangtan 411105, China E-mail: xtutkx@163.com.
authors.forename: Kaixun
authors.initials: K
authors.lastname: Tian
authors.affiliation: Department of Environmental Science and Engineering, Xiangtan University, Key Laboratory Heavy Metal Pollution Control, College of Hunan Province, Xiangtan 411105, China E-mail: xtutkx@163.com.
authors.forename: Cuixiang
authors.initials: C
authors.lastname: Ming
authors.affiliation: Department of Environmental Science and Engineering, Xiangtan University, Key Laboratory Heavy Metal Pollution Control, College of Hunan Province, Xiangtan 411105, China E-mail: xtutkx@163.com.
authors.forename: Youzhi
authors.initials: Y
authors.lastname: Dai
authors.affiliation: Department of Environmental Science and Engineering, Xiangtan University, Key Laboratory Heavy Metal Pollution Control, College of Hunan Province, Xiangtan 411105, China E-mail: xtutkx@163.com.
authors.forename: Kouassi Marius
authors.initials: KM
authors.lastname: Honore Ake
mesh_terms: D057919:Biological Oxygen Demand Analysis; D002851:Chromatography, High Pressure Liquid; D008401:Gas Chromatography-Mass Spectrometry; D006861:Hydrogen Peroxide / Q000737:chemistry*; D007501:Iron / Q000737:chemistry*; D010084:Oxidation-Reduction; D013859:Thiocarbamates / Q000032:analysis* / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry; D018508:Water Purification / Q000379:methods*
chemical_list: C045076:Fenton's reagent; D013859:Thiocarbamates; D014874:Water Pollutants, Chemical; D006861:Hydrogen Peroxide; D007501:Iron; C032761:carbamothioic acid, S,S'-(2-(dimethylamino)-1,3-propanediyl) ester