【摘要】 改进了经典的Ferron逐时络合比色法 ,使其能定量测定铝铁共存溶液的形态分布 ;分析了该实验方法中比色 缓冲溶液的成分和 pH值的影响 ,确定以铝、铁与Ferron反应的等吸收点 36 2nm为测定波长 .实验表明 ,总浓度相同而铝铁比不同的铝铁共存溶液 ,与Ferron溶液反应后其吸光值都大致相等 ,且在实验浓度范围内符合朗伯 比尔定律 .更多还原

【Abstract】 The classical Ferron timed complex colorimetric method is improved.With which the species distribution of Al(Ⅲ) and Fe(Ⅲ) coexisting solution is measured quantitatively.The component of the colorimetric-buffer solution and the effect of pH value are analyzed,and the equal absorption point of Al-Ferron and Fe-Ferron is determined as measuring the wavelength (362 nm).The tests show that the absorbencies are about to be equal,when Al(Ⅲ) and Fe(Ⅲ) coexisting solution with same concentration( T) and different n Al ∶n Fe value reacts with Ferron.Moreover,the experimental results are in accord with Lambert-Beer law within concentration range.更多还原