沸石分子筛骨架元素一般主要由硅、铝或磷、铝组成，铝在其中的分布及含量直接影响沸石分子筛的性能和应用［１］，因此测定分子筛中铝具有重要意义。仪器分析法具有操作快速而省时等优点，但仪器分析中ＩＣＰ，ＭＳ等方法由于仪器价昂，一般难以推广使用。分光光度法以其仪器 Zeolite molecular sieve framework elements are generally mainly composed of silicon, aluminum or phosphorus, aluminum composition, aluminum in which the distribution and content of zeolites directly affect the performance and application [1], so the determination of aluminum molecular sieve is of great significance. Instrument analysis has the advantages of fast operation and time saving, but the instrument analysis ICP, MS and other methods due to expensive instruments, generally difficult to promote the use of. Spectrophotometry with its instruments