X射线荧光光谱法测定增产丙烯助剂中磷和铁的研究

使用X射线荧光光谱仪，采用人工合成标样，设计合成了一套标准样品，采用数学校正法中的经验系数法校正元素间的互相干扰，样品不经任何处理，粉末直接压片，经验系数法校正基体效应，建立了分析测定增产丙烯助剂中磷和铁含量的方法。讨论了样品制作方法，合适的测量条件，探讨了试样中元素间的相互影响。实验结果表明，该方法重现性好，准确度和精密度较高，测定磷和铁的相对标准偏差为：0.34%和0.59%;测定范围磷为0.01%～2.5%，铁为0.01%～2.5%。分析结果与化学法、等离子发射光谱法测定结果吻合。该方法快速、简便，样品处理简单，可以不分解;分析速度远快于其他分析方法，结果准确，单次测量一个样品只需要5 min，适用范围广，满足了科研和工业生产的需要。

Determination of Phosphorus and Iron in Cocatalyst for Maximum Propylene Production by X-Ray Fluorescence Spectrometry

The aim of the authors' research work was to develop a new technique for quantitative analysis of phosphorus and iron contents in cocatalyst by X-ray fluorescence spectrometry(XRFS).A set of standard samples synthesized were prepared for the experiments with this purpose when the interferences of inter-elements had been corrected by empirical coefficient method.The standard samples were manually synthesized,and the powder pellets were used for sample preparation and the matrix effects were corrected by the ...