以分析纯化学试剂为初始试剂,经分步沉淀法纯化和气固反应及热分解反应制备成CaCO_3,SrCO_3,BaCO_3,MgO,Al_2O_3和SiO_2六种产物。用X-射线荧光光谱法分析了杂质含量。结果表明各样品的主要杂质含量已基本降到高纯试剂水平。所提纯制备的产物可作为发光材料等无机材料合成的原料试剂。本方法具有设备简单,操作方便,不需特殊试剂等特点。 Six kinds of products of CaCO_3, SrCO_3, BaCO_3, MgO, Al_2O_3 and SiO_2 were prepared by the steps of precipitation purification, gas-solid reaction and thermal decomposition with the analytical reagent as the initial reagent. The content of impurities was analyzed by X-ray fluorescence spectrometry. The results show that the main impurity content of each sample has basically dropped to the level of high purity reagents. The purified product can be synthesized as a raw material reagent for inorganic materials such as luminescent materials. The method has the advantages of simple equipment, convenient operation, no special reagent and the like.