Simultaneous Determination of Zirconium and Hafnium by Dual System and Dual Wavelength Spectrophotometry

摘要

A dual system and dual wavelength spectrophotometry（DSDWS）used to simultaneously determine Zrand Hf were proposed.《Zr（Hf）-xO-CTMAB》and《Zr（Hf）-CAB-CDMAA-Triton X-100》were chosenas a pair of chromophoric systems.The difference of chromophoric behaviours between Zr and Hf is in-creased by the addition of hydrogen peroxide as masking agent and by adjustment of acidity.The apparentmolar absorptivities of Zr and Hf are 2.0×105 and 5.0×104 L·mol-1·cm-1respectively.The proce-dure is simple and rapid.