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本文基于Ａｌ（Ⅲ）与３，５－二溴水杨醛缩邻氨基酚和溴化十六烷基三甲胺形成络合物导致体系荧光熄灭的特性，提出了一种测定痕量Ａｌ（Ⅲ）的新荧光方法。在ｐＨ＝３．８～４．５的醋酸铵缓冲介质和溴化十六烷基三甲胺存在下，Ａｌ（Ⅲ）与３，５－二溴水杨醛缩邻氨基酚形成１：１的络合物。在λｅｘ＝３５５，λｅｍ＝５３５ｎｍ的条件下，体系产生的荧光熄灭程度最大，铝量的线性范围为０～０．８μｇ／ｍｌ，检测限为０．２５ｎｇ／ｍｌ。方法用于水样、合金钢及抗静电油剂中铝的测定，结果满意。
Based on the complex of Al (Ⅲ) with 3,5-dibromosalicylaldehyde-o-o-aminophenol and cetyltrimethylammonium bromide, which led to the quench of the fluorescence of the system, a novel method for the determination of trace amounts of Al (Ⅲ) ) Of the new fluorescence method. Al (Ⅲ) and 3,5-dibromosalicylaldehyde-o-o-aminophenol formed a 1: 1 reaction with ammonium acetate buffer at pH = 3.8-4.5 and cetyltrimethylammonium bromide Complex. Under the conditions of λex = 355 and λem = 535nm, the fluorescence of the system was the highest, the linear range of the amount of aluminum was 0 ~ 0.8μg / ml and the detection limit was 0.25ng / ml. The method was applied to the determination of aluminum in water sample, alloy steel and antistatic oil and the results were satisfactory.