X射线荧光光谱法测定灰岩中14种主次量元素

采用X射线荧光光谱法对灰岩中的Ca,Mg,Si,K,Na,Fe,Al,Ti,P,S,Mn,Sr,Ba,Cl等14种元素进行同时测定,采用硼酸镶边垫底的粉末压样法,优化了测量条件。对比较轻的元素,采用经验影响系数法校正基体效应,对于较重的元素,采用理论α影响系数法校正基体效应。分析标准参考物质GBW 07132,各元素的精密度(RSD)为0.1%~5.9%,分析标准参考物质GBW 07130,各元素的测定值与标准值相符,该方法对各元素的测定范围宽、速度快。

Determination of 14 Elements in Limestone by X-ray Fluorescence Spectrometry

A X-ray fluorescence spectrometer was applied to the determination of 14 elements of Ca, Mg, Si, K, Na, Fe, Al, Ti, P, S, Mn, Sr, Ba, Cl in limestone. The method used pressed powder pellet sample preparation, and the analytical condition was optimized. For the ethereal elements, empirical coefficients was used for the correction of matrix effect. For the heavy elements, the theory alpha method was applied. By analyzing standard reference materials, the preeisions of the method were 0.1%-5.9%, the measure result were in good agreement with certified values. The method is rapid and has a wide determination range.