ガレインと塩化セチルピリジニウムを用いるアルミニウムの吸光光度定量

概要

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A rapid and highly sensitive method has been developed for the spectrophotometric determination of aluminum with galleon and cationic surface active agent in a weak acidic aqueous solution. The calibration curve for the spectrophotometric determination was linear in the range 0〜8.0μg aluminum/10ml. The sensitivity was 0.0008μg aluminum/cm^2 for absorbance of 0.001. The recommended analytical procedure is as follows. A sample solution containing less than 8.0μg of aluminum is taken in a 10 ml measuring flask, and 1.5 ml of 1.0×10^<-2>M cetylpyridinium chloride(CPC) solution and 2.0 ml of 1.0×10^<-3> M galleon solution are added and then the resulting solution is adjusted to pH 4.6〜5.5 with acetic acid-sodium acetate buffer solution. The solution is made up to the mark with water, and the absorbanceis measured at 600 nm against the reagent blank. The reaction is quite sensitive, and the procedure does not require along time. The mole ratio of aluminum, galleon and CPC in the complex was estimated to be 1:2:2 by the continuous variation and the mole ratio methods.
社団法人日本分析化学会の論文
1977-05-05