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黄酮类试剂已广泛应用于微量铪的荧光测定,等人已详细研究了在硫酸、盐酸介质中铪与桑色素及栎精的荧光反应,在0.2～0.5N硫酸中,铪与栎精生成络合物,灵敏度为0.04微克/毫升铪,而在5～7N盐酸中,也生成络合物,灵敏度为0.01微克/毫升铪;在7N盐酸中,铪与桑色素生成络合物,灵敏度为0.008微克/毫升铪,而在1N硫酸中也生成络合物,灵敏度为0.005微克/毫升铪。但是,由于锆铪性质极相似,在上述体系中,锆
Flavonoids have been widely used in the determination of trace amounts of hafnium fluorescence, et al. Have studied in detail the fluorescence reaction of hafnium with morin and quercetin in sulfuric acid, hydrochloric acid medium, hafnium and quercetin in 0.2 ~ 0.5N sulfuric acid Complex with sensitivity of 0.04 μg / ml hafnium and 5 ~ 7N hydrochloric acid with a sensitivity of 0.01 μg / ml hafnium. In 7N hydrochloric acid, hafnium forms a complex with morin, with a sensitivity of 0.008 Micrograms / milliliter of hafnium, whereas complexes also formed in 1N sulfuric acid with a sensitivity of 0.005 micrograms / milliliter hafnium. However, due to the very similar properties of zirconium and hafnium, in the above system, zirconium