Interconversion of iron(III) hydroxy complexes in seawater |
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Authors: | Oliver C Zafiriou Mary B True |
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Institution: | Department of Chemistry, Woods Hole Oceanographic Institution, Woods Hole, MA 02543 U.S.A. |
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Abstract: | Interconversion rates of the mononuclear ferric iron species Fe(OH)30 and Fe(OH)2+ are derived and their implications for the behavior of these species in seawater are examined. The previously reported formation constant for Fe(OH)30 and its claimed extreme adsorptive reactivity in seawater are shown to be mutually inconsistent. Although Fe(OH)30 is probably a stoichiometrically minor dissolved iron species, its rapid formation from Fe(OH)2+ could substantially enhance the rates of heterogeneous reaction rates of the Fe(OH)2+ + Fe(OH)30] pool if the latter species is very reactive. |
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