"Grabner, G." . "0926-3373" . . "25;35" . . . "50" . "Jirkovsk\u00FD, Jarom\u00EDr" . "569012" . . . . "2"^^ . "Maihot, G." . . "Iron(III) - Photoinduced Degradation of 4-chloroaniline in Aqueous Solution"@en . "RIV/61388955:_____/04:00107642!RIV/2005/AV0/A54005/N" . "1" . "[6AA4E7DEB6CC]" . . "The degradation of a prototypical halogenoaromatic pollutant, 4-chloroaniline (4-CA), photoinduced by Fe(111) species, has been studied in acidic aqueous solutions (pH 2-4) of Fe(ClO4)(3) by means of product analysis and nanosecond transient absorption spectroscopy. The degradation process is initiated by the attack of OH radicals on 4-CA, leading to radical cations, 4-CA(.+) as the major transient species. At high photon fluences, the decay of 4-CA(.+) is dominated by second-order reactions; an accelerating effect of Fe(111) could be evidenced at low fluence. A large number of minor reaction intermediates could be detected by product analysis following continuous irradiation at lambda(exc) = 365 nm of aerated solutions, arising from ring substitution, ring opening and oligomerization processes. At higher concentration of 4-CA, the specificity of the degradation process increases; the oligomerization pathway becomes predominant and leads to three major oligomeric products." . . . . . "RIV/61388955:_____/04:00107642" . . "Applied Catalysis" . . "P(GA203/02/0983), P(GA203/99/0763), Z(AV0Z4040901)" . "NL - Nizozemsko" . "11"^^ . "iron(III); photoinduced processes; environmental photochemistry"@en . "Lemr, K." . "Bolte, M." . . . . "Fotoindukovan\u00E1 degradace 4 chloranilinu ve vodn\u00FDch roztoc\u00EDch \u017Eelezit\u00FDch sol\u00ED"@cs . "Iron(III) - Photoinduced Degradation of 4-chloroaniline in Aqueous Solution"@en . . "Hykrdov\u00E1, Lenka" . "Fotoindukovan\u00E1 degradace 4 chloranilinu ve vodn\u00FDch roztoc\u00EDch \u017Eelezit\u00FDch sol\u00ED"@cs . "6"^^ . "Iron(III) - Photoinduced Degradation of 4-chloroaniline in Aqueous Solution" . . "Iron(III) - Photoinduced Degradation of 4-chloroaniline in Aqueous Solution" . "Pomoc\u00ED nanosekundov\u00E9 spektroskopie a anal\u00FDzy produkt\u016F byla studov\u00E1na fotoindukovan\u00E1 degradace 4 chloranilinu (4 CA), typick\u00E9ho halogenaromatick\u00E9ho polutantu, v kysel\u00FDch (pH 2 4) roztoc\u00EDch Fe(ClO4)3. Rozklad 4 CA je iniciov\u00E1n atakem OH radik\u00E1l\u016F za vzniku radik\u00E1lov\u00E9ho kationtu 4 CA??. P\u0159i vysok\u00E9m toku foton\u016F prob\u00EDhal z\u00E1nik 4 CA?? kinetikou druh\u00E9ho \u0159\u00E1du, p\u0159i n\u00EDzk\u00E9m toku foton\u016F byl patrn\u00FD urychluj\u00EDc\u00ED vliv Fe(III). Kontinu\u00E1ln\u00ED oza\u0159ov\u00E1n\u00ED za p\u0159\u00EDstupu vzduchu p\u0159i lambda(exc) = 365 nm vedlo ke vzniku mnoha meziprodukt\u016F se substituovan\u00FDm \u010Di otev\u0159en\u00FDm aromatick\u00FDm j\u00E1drem pop\u0159. oligomer\u016F. P\u0159i vy\u0161\u0161\u00ED koncentraci 4 CA se specifi\u010Dnost zv\u00FD\u0161ila, oligomera\u010Dn\u00ED cesta se stala dominantn\u00ED a vedla ke vzniku t\u0159\u00ED hlavn\u00EDch produkt\u016F. Chemick\u00E9 struktury t\u011Bchto oligomer\u016F, jako\u017E i vznik redoxn\u00EDho p\u00E1ru p benzochinon/hydrochinon jako hlavn\u00EDho produktu za nep\u0159\u00EDstupu vzduchu, vedly k domn\u011Bnce, \u017Ee kl\u00ED\u010Dov\u00FDm reak\u010Dn\u00EDm meziproduktem degradace 4 CA je p bezochinon monoimin, vznikaj\u00EDc\u00ED patrn\u011B p\u0159\u00EDmou reakc\u00ED 4 CA?? s Fe(III)."@cs . "The degradation of a prototypical halogenoaromatic pollutant, 4-chloroaniline (4-CA), photoinduced by Fe(111) species, has been studied in acidic aqueous solutions (pH 2-4) of Fe(ClO4)(3) by means of product analysis and nanosecond transient absorption spectroscopy. The degradation process is initiated by the attack of OH radicals on 4-CA, leading to radical cations, 4-CA(.+) as the major transient species. At high photon fluences, the decay of 4-CA(.+) is dominated by second-order reactions; an accelerating effect of Fe(111) could be evidenced at low fluence. A large number of minor reaction intermediates could be detected by product analysis following continuous irradiation at lambda(exc) = 365 nm of aerated solutions, arising from ring substitution, ring opening and oligomerization processes. At higher concentration of 4-CA, the specificity of the degradation process increases; the oligomerization pathway becomes predominant and leads to three major oligomeric products."@en .