采用X射线荧光光谱法同时测定硅酸盐和高铁高钛铝土矿中SiO₂、Al₂O₃、Fe₂O₃、TiO₂、K₂O、Na₂O、CaO、MgO、MnO、P₂O₅等主次组分。0.500 0 g样品与5.000 0 g Li₂B₄O₇-LiBO₂混合熔剂（质量比为67∶33）混匀后，加入脱模剂200 g·L^-1 NH₄Br溶液0.6 mL，氧化剂500 g·L^-1 NH₄NO₃溶液1.0 mL，在1 100℃下先预熔2 min，再熔融8 min制备熔片。选择土壤、水系沉积物、岩石、铝土矿、高岭土等国家一级标准物质以及人工合成的校准样品绘制校准曲线。方法应用于硅酸盐和铝土矿标准物质及实际样品的主次成分的测定，结果与标准物质认定值或实际样品化学法测定值一致，各组分测定结果的相对标准偏差（n=12）小于8.0%。

The major and minor components (SiO₂, Al₂O₃, Fe₂O₃, TiO₂, K₂O, Na₂O, CaO, MgO, MnO and P₂O₅) in silicate and bauxite with high content of iron and titanium were determined simultaneously by X-ray fluorescence spectrometry. The sample (0.500 0 g) was mixed well with lithium tetraborate-lithium metaborate (Li₂B₄O₇-LiBO₂, 5.000 0 g, mass ratio of 67:33), then 0.6 mL of 200 g·L^-1 NH₄Br solution as releasing agent and 1.0 mL of 500 g·L^-1 NH₄NO₃ solution as oxidant were added, the mixture was pre-melt for 2 min and melt for 8 min at 1 100℃ to prepare the fuse piece. The calibration curves were plotted by using national level standard substances and artificial calibration samples of soil, stream sediment, rock, bauxite and kaolin ore. The proposed method was applied to the determination of the major and minor components in certified reference materials and real samples of silicate and bauxite, the results were consistent with the certified values and those obtained by chemical method, and RSDs (n=12) were less than 8.0%.