| Registro completo |
| Provedor de dados: |
OMA
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| País: |
Belgium
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| Título: |
Kinetics of iron (II) oxidation in seawater of various pH
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| Autores: |
Roekens, E.J.
Van Grieken, R.E.
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| Data: |
1983
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| Ano: |
1983
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| Palavras-chave: |
Iron
Kinetics
Oxidation
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| Resumo: |
The rate of iron(II) oxidation in the North Sea water of pH 5.5-10 in the range 10-25°C has been studied. The oxygenation rate depends linearly on the iron(II) and dissolved oxygen concentrations. The second-order dependence on (OH<sup>-</sup>), found by several investigators for synthetic solutions, was confirmed in seawater, but only for pOH>6.9. For pOH<5.9 the rate appeared to be independent of the pOH. In the intermediate range, pOH<5.9-6.9, corresponding to the natural pH of seawater, a first-order dependence on the pOH is obeyed. The important discrepancy in the literature between the second-order rate constant for NaCHO<sub>3</sub> solutions and for seawater can be attributed predominantly to the incorrect assumption of a second-order pOH dependence in natural seawater. The results can be useful, for example, in predicting the effect of dumping acidic iron waste from the titanium-dioxide industry into the ocean.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3293
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| Fonte: |
%3Ci%3EMar.+Chem.+13%3C%2Fi%3E%3A+195-202
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| Direitos: |
info:eu-repo/semantics/restrictedAccess
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