The Reactivity of Iron

The Reactivity of Iron
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铁的反应性

DOI:
10.1007/978-3-662-04242-7_7
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发表时间:
2000
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通讯作者:
R. Haese
R. Haese
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作者:
R. Haese

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为了我们理解生物有机体和固体地球之间的相互作用,研究铁在生物圈和地质圈交界处的反应性是很有趣的。与锰相似(第二章11),铁以两种价态存在,即氧化铁Fe(III)和还原亚铁Fe(II)。两个主要的生物过程是重要的:微生物,如趋磁细菌或浮游植物。第2.2节和第7.3节)依赖于铁的吸收作为其细胞生长(同化)的先决条件。另一些则通过还原Fe(III)来保存能量,以维持其生理功能(异化)。在这种情况下,铁作为电子受体,也被称为氧化剂。除了生物反应外,还会发生多种非生物反应,这取决于热力学和动力学条件。
For our understanding of interactions between living organisms and the solid earth it is fascinating to investigate the reactivity of iron at the interface of the bio- and geosphere. Similar to manganese (Chap. 11), iron occurs in two valence states as oxidized ferric iron, Fe(III), and reduced ferrous iron, Fe(II). Two principal biological processes are of importance: Microorganisms such as magnetotactic bacteria or phytoplankton (Chap. 2.2 and Sect. 7.3) depend on the uptake of iron as a prerequisite for their cell growth (assimilation). Others conserve energy from the reduction of Fe(III) to maintain their physiology (dissimilation). In this case, ferric iron serves as an electron acceptor which is also termed oxidant. Apart from biotic reactions, manifold abiotic reactions occur depending on thermodynamic and kinetic conditions.
间歇性大气养分输入在海洋生态系统化学和生物动态中的作用
DOI: --
发表时间: 1991
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作者:
P. Donaghay;P. Liss;R. Duce;D. R. Kester;A. Hanson;T. Villareal;N. Tindale;D. J. Gifford
通讯作者: D. J. Gifford