Mössbauer Spectroscopic Analysis of Iron Oxides in Soil
Mössbauer Spectroscopic Analysis of Iron Oxides in Soil
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土壤中氧化铁的穆斯堡尔光谱分析
DOI：
10.1021/ba-1981-0194.ch011
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发表时间：
1981
期刊：
影响因子：
--
通讯作者：
S. B. Weed
中科院分区：
文献类型：
--
作者：
L. H. Bowen;S. B. Weed
在氧化程度较高的土壤中，氧化铁主要以铝取代的针铁矿（α-FeOOH）和赤铁矿（α-Fe 2 O3）的形式存在。这些微晶氧化物通常以低丰度存在，并且可以通过与5 M NaOH煮沸来浓缩用于分析。本章是穆斯堡尔研究的后果，这种治疗在各种土壤粘土含有针铁矿和赤铁矿。氧化铁明显集中，而铝的掺入没有明显影响。针铁矿中铝置换的穆斯堡尔谱结果与碱处理后化学测定的铝含量基本一致。赤铁矿样品给更好的协议前处理。通过X射线衍射检测到的赤铁矿和针铁矿与穆斯堡尔数据定性一致。
Iron oxides in well-oxidized soils exist primarily in the form of aluminum-substituted goethite (α-FeOOH) and hematite (α-Fe2O3). These microcrystalline oxides often occur in low abundance and may be concentrated for analysis by boiling with 5M NaOH. This chapter is a Mössbauer study of the consequences of this treatment in a variety of soil clays containing both goethite and hematite. The iron oxide is concentrated appreciably, while aluminum incorporation is not markedly affected. The Mössbauer results for aluminum substitution in goethite generally agree with aluminum content chemically determined after treatment with base. Hematite samples give better agreement before treatment. Detection of hematite and goethite by x-ray diffraction agrees qualitatively with the Mössbauer data.