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采用HCl：HNO3=1：1氢氟酸高氯酸溶解样品，内标校正和基体匹配法消除基体干扰，选择钇(Y)作为内标元素，增加了方法的稳定性。与化学法做数据对比，两种方法测定的分析结果基本一致。“,”The sample was dissolved by mixed acid of HCl-HNO3-HF-HClO4. By using internal standardization and matrix matched standard solution, the matrix interferences can be eliminated. The element yttrium(Y) was chosen as the internal standard element which can improve the precision of the method. The results are consistent with the values obtained by the titrimetry.