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在pH =5 .0HAc -NaAc缓冲介质中 ,溴化十六烷基吡啶 (CPB)存在下 ,Te(IV)与过量的二磺基苯基荧光酮 (DSF)生成 1∶4稳定络合物 ,λmax=5 5 5nm ,ε=1.35× 10 5L·mol-1·cm-1.Te(IV)在 0～ 10 μg/2 5mL内符合比尔定律 .方法用于硒中微量碲的测定 ,结果令人满意 .
Te (IV) with an excess of disulfophenylfluorone (DSF) in the presence of cetyl pyridinium bromide (CPB) in a pH = 5.0 MeOH-NaHA buffer medium produces a 1: 4 stable complex , λmax = 555nm, ε = 1.35 × 10 5L · mol-1 · cm-1 Beer’s law was obeyed in the range of 0 ~ 10 μg / 25mL and the method was applied to the determination of trace tellurium in selenium. The results Satisfactory.