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本文在文［１－４］的基础上，研究了在溴化十六烷基三甲基铵（ＣＴＭＡＢ）存在下铝与水杨基萤光酮（ＳＡＦ）的显色反应。在ｐＨ４．９的介质中，配合物的最大吸收峰位于５５２ｎｍ，表观摩尔吸光系数为１．１４ｘ１０￣５Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１）。铝与水杨基萤光酮的络合比为１：２。铝量在０－７．０μｇ／２５ｍｌ范围内符合比耳定律。该体系是光度法测定铝的灵敏显色反应之一，方法有一定选择性，用于航空润滑油中铝的测定，结果较为满意。
In this paper, based on [1-4], the color reaction of aluminum with salicylfluorone (SAF) in the presence of cetyltrimethylammonium bromide (CTMAB) was studied. In the medium of pH4.9, the maximum absorption peak of the complex is located at 552nm, the apparent molar absorptivity is 1.14 × 10 ~ 5L · mol ~ (-1) · cm ~ (-1). The complex ratio of aluminum to salicylfluorone is 1: 2. Beer’s law is obeyed for aluminum in the range of 0-7.0 μg / 25 ml. The system is one of the sensitive chromogenic reactions for the determination of aluminum by photometric method. The method has certain selectivity and is used for the determination of aluminum in aviation lubricants. The result is satisfactory.