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本文应用穆斯堡尔谱学方法,研究了我国南方地区不同干热条件下形成的燥红土中存在的氧化铁的类型、性质及其Al~(3+)同晶代换作用。我们所研究的4种燥红土表层胶体部分(<2微米),在室温和80 K温度下测量了穆新堡尔谱,在室温下谱线出现超顺磁状态,80K温度下观察到明显的磁分裂六线谱。计算机拟合结果表明,氧化铁的类型以赤铁矿和针铁矿为主,并以细颗粒状态存在。反映了热带、亚热带土壤的特点。不同干旱条件下,土壤胶体部分赤铁矿、针铁矿所占的比例也有明显的不同,愈干旱赤铁矿的比例愈高。
In this paper, we use the Mossbauer spectroscopy method to study the types and properties of Fe3 + and the isomerisation substitution of Al3 + in the laterite formed under different dry and hot conditions in southern China. The four Newtonian surface colloidal fractions (<2 μm) we studied have been tested for Mohsinbolt spectra at room temperature and at 80 K, superparamagnetic spectra at room temperature, and significant Magnetic split tabi. Computer fit results show that the type of iron oxide mainly hematite and goethite, and the presence of fine particles state. Reflects the tropical, subtropical soil characteristics. Under different drought conditions, the proportions of hematite and goethite in the soil colloids are also significantly different, and the higher the proportion of the more hematite hematite is.