【摘要】 以Li2B4O7和LiBO2作熔剂,采用熔片法制样,建立了铝质、硅质和镁质耐火材料中MgO,Al2O3,SiO2,CaO,P2O5,TiO2,Fe2O3,MnO,K2O的X射线荧光光谱分析方法。考察了不同样品与熔剂的稀释比例时的玻璃熔片制备的重复性,讨论了烧失量的影响。本方法采用23个国家标准样品或人工合成样品来制作校准曲线,JIS模式理论α系数法校正基体的吸收增强效应,并且用标准样品验证了方法的准确度,标准样品的测定值与标准值非常接近,且有较好精密度。更多还原

【Abstract】 A X-ray fluorescence spectrometry for quick analysis of MgO,Al₂O₃,SiO₂,CaO,P₂O₅,TiO₂,Fe₂O₃,MnO,K₂O in silicon,magnesium and aluminium base refractory materials was set up.The sample powder was prepared into a fused glass bead in （1 100 ℃） by mixing Li₂B₄O₇ with LiBO₂.The determination precision in different dilution ratio（1∶5 and 1∶10） of sample and lithium tetraborate and the effects of the loss on ignition were discussed.To correct the absorption and enhancement effects,JIS theoretical model was used to calculate the influence coefficients.Twenty-three certified reference materials and synthetic standards were served to make the calibration curve.And the accuracy of the method is verified by the analysis of certified reference materials.The determination results for certified reference materials agree well with certified values and the precision is also good.更多还原