期刊
ENVIRONMENTAL CHEMISTRY LETTERS
卷 6, 期 1, 页码 29-34出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s10311-007-0108-z
关键词
photochemistry; atmospheric aerosols; surface waters; Fe(III) chlorocomplexes
Here we show that the photolysis of FeCl2+ upon UV irradiation of Fe(III) at pH 0.5, yielding Cl-center dot and then Cl-2(-center dot), upon further reaction with Cl-, induces phenol degradation. The photolysis of FeCl2+ can be highlighted and studied as the huge interference by FeOH2+ can be avoided under such conditions. Our data allowed the assessment of a photolysis quantum yield for FeCl2+ of 5.8 x 10(-4) under UVA irradiation, much lower compared to the literature value of 0.5. The discrepancy can be explained if the photolysis process is efficient but photoformed Fe2+ and Cl-center dot undergo recombination inside the solvent cage.
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