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本文研究了高灵敏的Ga(Ⅲ)-BPR-Tween80-CTAB体系。该体系的适宜酸度为pH2.87～3.42。最大吸收在528nm。锌量在0.1～1.0μg/25ml范围遵守比耳定律。当Tween80在高浓度(0.8％)时,ε=5.72×10~5l·mol~(-1)·cm~(-1);当Twnne80在低浓度(0.24％)并辅以少量H_2O_2(浓度为4.8×10~(-3)％)时,ε=1.09×10~6l·mol~(-1)·cm~(-1)。镓在6mol/l盐酸介质中用乙酸丁酯萃取分离后,测定了分子筛型催化剂中的镓含量。
In this paper, highly sensitive Ga (Ⅲ) -BPR-Tween80-CTAB system is studied. The optimum acidity of the system is pH2.87 ~ 3.42. The maximum absorption at 528nm. Beer’s law is obeyed for the amount of zinc in the range of 0.1-1.0 μg / 25 ml. When Tween80 is at a high concentration (0.8%), ε = 5.72 × 10-5 mol · cm -1; when Twnne80 is at a low concentration (0.24%) with a small amount of H 2 O 2 4.8 × 10 ~ (-3)%), ε = 1.09 × 10 ~ 6l · mol -1 cm -1. Gallium in 6mol / l hydrochloric acid medium with butyl acetate extraction separation, determination of molecular sieve catalyst gallium content.