منابع مشابه
The Irony of Iron – Biogenic Iron Oxides as an Iron Source to the Ocean
Primary productivity in at least a third of the sunlit open ocean is thought to be iron-limited. Primary sources of dissolved iron (dFe) to the ocean are hydrothermal venting, flux from the sediments along continental margins, and airborne dust. This article provides a general review of sources of hydrothermal and sedimentary iron to the ocean, and speculates upon the role that iron-cycling mic...
متن کاملIron Oxides as Tools to Assess Water Erosion Processes
The study of erosive processes is essential to maintain agricultural sustainability, but it is often affected by the limitations and costs of conventional methodologies used. This situation is common worldwide, which has resulted in an increasing interest in developing sediment tracers. Here we provide a general review of diverse sediment tracing approaches and some of the advantages and limita...
متن کاملAdsorption of isoxaflutole degradates to aluminum and iron hydrous oxides.
Isoxaflutole is a preemergence herbicide that has been marketed as a substitute for atrazine. It is rapidly transformed to a more stable and soluble diketonitrile degradate (DKN) after field application and can further degrade to a benzoic acid degradate (BA) within soil. However, no previous research has been conducted to investigate DKN and BA sorption to metal oxide minerals. The primary obj...
متن کاملOptimal Iron Oxides for Obtaining Hexaferrites
Presently, the ferrites industry consumes large amounts of iron osides obtained by spray roasting of steel pickling liquors. The aim of this paper is to propose the synthesis of optimal iron osidcs by oxyprecipitation of steel pickling liquors in order to obtain Bahexafenite wit11 high magnetic properties using the ceramic process. As a raw material. i t was used sulphuric liqoors with iron con...
متن کاملAging effects in the electrokinetics of colloidal iron oxides.
We analyze in this contribution the effect of aging on the electrokinetic properties of magnetite (Fe(3)O(4)) and hematite (alpha-Fe(2)O(3)). In both cases, high-purity commercial samples and monodisperse synthetic particles were studied. Commercial magnetite showed a rather erratic dependence of its electrophoretic mobility u(e) with the concentration of NaCl. Furthermore, sufficient concentra...
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ژورنال
عنوان ژورنال: Geobiology
سال: 2008
ISSN: 1472-4677,1472-4669
DOI: 10.1111/j.1472-4669.2008.00155.x