本文提出用二安替比林甲烷(DAM)在同一份溶液中连续分离出镓(Ⅲ)和铟(Ⅲ),以5—Br—PADAP2—(5—溴—吡啶偶氮)—5—二乙氨基酚]分光光度测定其含量的新方法.实验表明,该法较为简单易引,具有较高的选择性和灵敏度,其铟的表现摩尔吸光系数为7.0×10~4,镓为7.3×10~4,铟量在0～30μg/25ml,镓量0～19μg/25ml 范围内服从比耳定律.用于镓中铟的测定,矿石和烟尘中镓和铟的测定,得到了良好的结果. In this paper, gallium (III) and indium (III) were separated continuously from the same solution with Diantipyrylmethane (DAM) Ethyl aminophenol] spectrophotometric determination of the content of a new method. Experiments show that the method is relatively simple and easy to use, with high selectivity and sensitivity, the performance of indium molar extinction coefficient of 7.0 × 10 ~ 4, gallium was 7.3 × 10 ~ 4, the amount of indium in the 0 ~ 30μg / 25ml, the amount of gallium 0 ~ 19μg / 25ml obey Beer’s law. Determination of indium gallium for gallium, indium and ores in the determination of ore and dust obtained good results .