熔融制样-X射线荧光光谱法测定镜铁矿中主次成分

Determination of Primary and Secondary Components in Specific Iron by Melting Sampling and X-Ray Fluorescence Spectroscopy

中文关键词:  镜铁矿石  熔融制样  X射线荧光光谱  主次成分

英文关键词:specularite  melting sample preparation  X-ray fluorescence spectroscopy  primary and secondary components

中文摘要:

      以Li₂B₄O₇和LiBO₄[m（Li₂B₄O₇）：m（LiBO₄）=67：33]为熔剂，采用1：25熔剂稀释比，于1 120℃将镜铁矿试样熔融制成玻璃熔片，X射线荧光光谱分析仪对熔片中Fe、Mn、Ti、Ca、Ba、Al、Mg、K、Na和P等元素进行同时测定.由于样品采用大的熔剂稀释比进行高温熔融，有效提高了K、Na等元素的X射线荧光强度，消除了复杂矿物结构效应，降低共存元素间基体效应影响，提高了分析结果的准确度和精密度.方法用于铁矿石标样分析，各组分的测定值与标准值相符.

英文摘要:

      Li₂B₄O₇ and LiBO₄[m(Li₂B₄O₇):m(LiBO₄)=67:33] were used as fluxes, and the specularite samples were melted into glass fuses at 1 120℃ with a 1:25 flux dilution ratio. Fe, Mn, Ti, Ca, Ba, Al, Mg, K, Na and P in the fuses were determined simultaneously on an X-ray fluorescence spectrometer. Since the sample was melted at high temperature with a large flux dilution ratio, the X-ray fluorescence intensities of K, Na and other elements were effectively enhanced, with the complex mineral structural effect eliminated, and the matrix effect between coexisting elements reduced, so the accuracy and precision of the analysis results were improved. The method has been applied to the analysis of iron ore standard samples. The measured values of each component were in accordance with the standard values.