有关Al、铬菁R、表面活性剂增敏型三元络合物已有介绍,但对同一系列的不同表面活性剂的对比研究未见报导。本文就Al—铬菁R—阳离子表面活性剂体系进行了对比试验,发现烷基三甲铵类阳离子表面活性剂其增敏效果是按CTMAB、DTAB,DeTAC顺序增大。Al—ECR—DTAB体系稳定性较好,显色PH范围较宽,拟定的光度法用于岩石标样中微量Al的测定,得到了满意的结果,对反应机理进行了初步探讨。 Al, chrysin R, surfactant sensitized ternary complexes have been described, but the same series of different surfactants have not been reported on the comparative study. In this paper, Al-Chromium R-cationic surfactant systems were compared and found that alkyl trimethyl ammonium cationic surfactants sensitizing effect is CTMAB, DTAB, DeTAC order increases. The stability of Al-ECR-DTAB system is good, the color range of pH is wide, and the proposed spectrophotometry is applied to the determination of trace Al in rock samples. Satisfactory results are obtained and the reaction mechanism is discussed preliminarily.