Sample preparation for X-ray fluorescence analysis II. Pulverizing methods of powder samples
Sample preparation for X-ray fluorescence analysis II. Pulverizing methods of powder samples
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发表时间：
2014
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通讯作者：
A. Morikawa
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作者：
A. Morikawa
对于粉末样品的分析，如前一版[X射线荧光分析I的样品制备]中所述，粒度效应、矿物学效应和偏析等非均匀性效应会对X射线荧光强度产生影响，从而导致分析误差。当需要更精确的分析时，建议在粉碎后分析样品，以尽可能消除粒度效应和偏析。对于可以消除粒度和矿物学效应的影响的熔融珠方法，预先粉碎样品可能是成功制备具有高再现性的均匀熔融珠样品的关键。本文介绍了制备粒度小于50 μm的粉末样品的粉碎要点。2.粉碎机和容器
for the analysis of powder samples, as mentioned in the previous edition [Sample preparation for X-ray Fluorescence Analysis I.], heterogeneity effects such as grain size effect, mineralogical effect and segregation can result in analysis error because of its effect on the X-ray fluorescence intensity. When more precise analysis is required, it is recommended to analyze the sample after pulverization to eliminate the grain size effect and segregation as much as possible. For the fusion bead method which can remove the influences of grain size and mineralogical effects, the pulverization of the sample beforehand may be a key point in successfully preparing a homogeneous fusion bead sample with high reproducibility. This issue describes the important points for pulverization to make powder samples with particle size less than 50 μm. 2. Pulverizers and vessels