Nature of Free Iron Oxides in Soil Clays
Nature of Free Iron Oxides in Soil Clays
复制标题
土壤粘土中游离氧化铁的性质
DOI：
10.1038/164244a0
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发表时间：
1949
期刊：
影响因子：
64.8
通讯作者：
R. C. Mackenzie
中科院分区：
文献类型：
--
作者：
R. C. Mackenzie
目前正在对土壤粘土进行差热分析检查，以阐明其矿物成分，这提供了有关粘土胶束上氧化铁涂层性质的一些证据。研究中的一种粘土的游离氧化铁含量为 31%，是从基性火成耕土上形成的土壤的 C 层样品（深度 48-52 英寸）中分离出来的，并在蒸汽浴上用过氧化氢处理了几次以去除有机物。其热分析图在约 345°C 处显示出强放热峰（图中的曲线 1），由于其清晰明确的性质，该峰似乎与通常与有机物相关的宽而分散的谱带完全不同，但与 Berg、Nikolaiev 和 Rode1 引用的“冷沉淀”或“发光”水合氧化铁 2 非常相似。
A DIFFERENTIAL thermal analysis examination of soil clays at present in progress with the view of elucidating their mineral composition has provided some evidence regarding the nature of the iron oxide coatings on the clay micelles. One of the clays studied, which had a free iron oxide content of 31 per cent, had been separated from aC-horizon sample (depth 48–52 in.) of a soil developed on basic igneous till and had been treated several times with hydrogen peroxide on the steam-bath to remove organic matter. Its thermogram shows a strong exothermic peak at about 345° C. (curve 1 in the graph), which because of its sharp well-defined nature appears to be quite different from the broad, rather diffuse band usually associated with organic matter, but which bears a considerable resemblance to that quoted by Berg, Nikolaiev and Rode1for ‘cold-precipitated’ or ‘glowing’ hydrated ferric oxide2.