锆(Ⅳ)—DCS偶氮胂—CPB体系显色反应的研究及其应用

Study on color Reaction of Zr(IV)-DCS-Arsenazo-Cetylpridinium Bromide and Its Analytical Application

在0.24MHCl介质中,锆(Ⅳ)与DCS偶氮呻和嗅化十六烷基吡啶生成三元络合物,ε(?)=6.37×10~4。在0～20μg/25ml锆浓度范围内符合比尔定律。该方去已用于铝合金及矿石中微量锆测定,结果令人满意。

Zr(IV) forms ternary complex with DCS-Arsenarzo, and CPB in a medium of 0.24M HC1. The apparent molar absorptivity is 6.37×106 at 617nm. Beer's law is obeyed over the concentration range of 0-20g/25ml for Zr. This method has been applied to the spectrophotometric. determination of microarnount zirconium in aluminium alloy and ores with satisfactory results.