Mest'ánková Hana, Mailhot Gilles, Pilichowski Jean-François, Krýsa Josef, Jirkovský Jaromir, Bolte Michèle
Laboratoire de Photochimie Moléculaire et Macromoléculaire, Université Blaise Pascal, F-63177 Aubière Cedex, France.
Chemosphere. 2004 Dec;57(10):1307-15. doi: 10.1016/j.chemosphere.2004.08.058.
The degradation of Monuron (3-(4-chlorophenyl)-1,1-dimethylurea) photoinduced by Fe(III) in aqueous solution has been investigated. The rate of degradation depends on the concentration of Fe(OH)2+, the most photoreactive species in terms of *OH radical formation. These *OH radicals are able to degrade Monuron until total mineralisation. The primordial role of the speciation of Fe(III)-hydroxy complex in aqueous solution, for the efficiency of the elimination of pollutant, was shown and explained in detail. The formation of Fe(II) in the irradiated solution was monitored and correlated with the total organic carbon evolution. Degradation photoproducts were identified and a mechanism of degradation is proposed.
研究了水溶液中Fe(III)光诱导灭草隆（3-(4-氯苯基)-1,1-二甲基脲）的降解情况。降解速率取决于Fe(OH)2+的浓度，就羟基自由基的形成而言，Fe(OH)2+是最具光反应活性的物种。这些羟基自由基能够降解灭草隆直至完全矿化。详细展示并解释了水溶液中Fe(III)-羟基络合物的形态对于污染物去除效率的重要作用。监测了辐照溶液中Fe(II)的形成，并将其与总有机碳的变化相关联。鉴定了降解光产物，并提出了降解机理。
