因子分析法の分析化学への応用　　ブロモチモールブルーの可視吸収スペクトルの分離

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書誌事項

タイトル別名
  • Application of factor analysis to analytical chemistry. Separation of visible spectra of Bromothymol Blue.
  • インシ ブンセキホウ ノ ブンセキ カガク ヘ ノ オウヨウ ブロモチモールブ
  • Separation of visible spectra of Bromothymol Blue
  • ブロモチモールブルーの可視吸収スペクトルの分離

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抄録

It is often observed that some of the spectra for individual components are overlapped in the spectrum measured for a solution containing multi-components. In such cases, it is very difficult to analyze the spectra in terms of discussing the equilibrium relation between each component. By application of a mathematical method, “factor analysis”, it is possible not only to isolate the measured spectrum to the pure spectra based on the individual components, but also to determine their composition profile. Although there are several papers on such application study, the process has not been described in detail. In order to obtain further information on the analytical processes of the factor analysis, absorption spectra of Bromothymol Blue solutions, in which blue and yellow species exist from pH 9.5to 4.5, were measured and the spectra were analyzed by this method. The algorithm of this method requires a selection of “pure points”, the number of which is the same as that of the pure components, and the selection of the pure points is one of the most important process in the analysis. In the case of BTB system, it was found that the composition of the solution, not the wavelength, can be used to select the pure points, because only one species exists in each solution of pH 9.5 or pH4.5, respectively.

収録刊行物

  • 分析化学

    分析化学 35 (10), 885-889, 1986

    公益社団法人 日本分析化学会

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