Trace metals in sea water. : C. S. Wong,Edward Boyle,Kenneth W. Bruland,J. D. Burton and Edward D. Goldberg. Nato Conference Series,Series IV: Marine Sciences,Volume 9, Plenum Press,New York and London,pp. xiv + 920, ISBN 0-306-41165-2, U.S. $ 115.00. |
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| Authors: | Andra Scozzafava |
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| Institution: | Department of General and Inorganic Chemistry, Veszprém University of Chemical Engineering, H-8201 Veszprém, Pf. 158 Hungary |
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| Abstract: | A comprehensive mechanism is proposed for the photolysis of transition metal complexes in equilibrium solutions. This involves the photo-oxidation, a possibility of energy transfer and several secondary thermal reactions, e.g. forward and back reactions with photochemically-formed H· radicals. The scheme includes the individual quantum yield (IQY) of each species. The photo-oxidations of FeSO4, FeClO4, FeCl2 in aqueous acidic solutions were studied by continuous irradiation. The IQY of Feaq2+ (0.2), FeSo4 (0.3), FeHSO4+ (0.67), FeClO4+ (0.06–0.2), FeCl+ (0.8), FeCl2 (0.3) were determined. The IQY was found to be dependent on H+ concentration, due to competition with geminal recombination within the solvent cage. This dependence, and the efficiency of energy transfer between excited iron(III) species and iron(II) in ground state, are discussed. |
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| Keywords: | Author to whom correspondence should be addressed |
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