Quantitative Electron-probe Microanalysis of Rock-forming Minerals
Quantitative Electron-probe Microanalysis of Rock-forming Minerals
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DOI：
10.1093/petrology/10.2.332
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发表时间：
1969-06
影响因子：
3.9
通讯作者：
T. R. Sweatman;J. Long
中科院分区：
文献类型：
--
作者：
T. R. Sweatman;J. Long
在两种不同的仪器上用电子探针技术分析了一些具有良好特性的硅酸盐矿物和金属氧化物，并在一定范围内进行了加速。用简单氧化物和矿物作为元素Na~Ca和纯金属元素Ti~Ni的标样，详细讨论了影响分析准确度的因素。对波长漂移误差的影响作了一般处理，并给出了可在任何仪器中确定影响大小的曲线。与X射线产生相关的校正(原子序数校正)、特征辐射和连续辐射的吸收和二次激发分别进行了检查。结果表明，用最新发展的校正方法可以获得1%或更高精度的分析，并表明这种方法现在是一种可行的方法，可能是一种比经验校准方法更好的替代方法。
A number of well-characterized silicate minerals and metal oxides have been analysed by the electron-probe technique in two different instruments with a range of accelerating potentials. Simple oxides and minerals have been used as standards for the elements Na to Ca and pure metals for the elements Ti to Ni.Factors affecting the accuracy of analysis are discussed in detail. The effect of wavelengthshift errors is treated in a general manner and curves enabling the magnitude of the effect to be determined in any instrument are given. Corrections associated with X-ray generation (the atomic number correction), absorption and secondary excitation by characteristic and continuous radiation are examined separately. It is shown that analyses with an accuracy of 1 per cent or better can be obtained with recently developed correction methods and it is suggested that this approach is now a workable and possibly a preferable alternative to methods employing empirical calibration.