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用连续光源和原子吸收光谱仪对胡椒基荧光酮 (PIF)与镓的显色反应进行了研究 .在表面活性剂CPB存在下 ,镓与胡椒基荧光酮形成 1∶4蓝紫色配合物 ,最大吸收波长在 56 0nm处 ,表观摩尔吸光系数为 9.53× 10 4 ,镓量在 0～ 0 .5μg/mL范围内符合比耳定律 .干扰离子可用乙酸丁酯分离 .方法应用于矿石中微量镓的测定获满意结果
The color reaction of piperonylfluorescein (PIF) with gallium was studied by using continuous light source and atomic absorption spectrometer. In the presence of surfactant CPB, gallium and piperonylfluorone formed a 1: 4 blue-purple complex with the maximum absorption The apparent molar absorptivity is 9.53 × 10 4 at 56 0 nm and Beer’s law is obeyed in the range of 0 ~ 0.5 μg / mL. The interference ions can be separated by butyl acetate. The method is applied to the determination of trace amounts of gallium Determination of satisfactory results