多波長吸光度検出フローインジェクション法によるアルミニウム合金中の鉄及びチタンの同時定量

概要

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A flow injection system with multi-wavelength detection is presented for rapid and simple simultaneous determination of iron and titanium in various aluminum alloys. The analysis is based on the complex formation of iron and titanium with diantipirylmethane in a continuous flow system and on-line monitoring of absorption spectra of those metal complexes. Concentrations of iron and titanium are calculated by solving two simultaneous equations consisting of the absorbances measured at two chosen wavelengths of λ_1 and λ_2 and molar absorptivities of each metal complex at λ_1 and λ_2. The results of the analysis of standard aluminum alloy samples by the proposed FIA system (λ_1=388 nm, λ_2=540 mn) correspond well with the reference values for iron and titanium and showed good reproducibility with relative standard deviations less than 3%. the sample throughout was about 25 h^<-1>.
社団法人日本分析化学会の論文
1992-02-05