ナトリウムメトキシドとヨウ化カリウムによる5H-ベンゾ[b]カルバゾールの螢光光度定量法

概要

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It has been reported that the fluorescence intensity of carbazole can be selectively meaoured by the additions of sodium methoxide, potassium iodide, and methanol to dimethyl sulfoxide solution of the sample, The fluorescence intensities of hterfering polynuclear aromatic compounds decreased because the intensities of the interfering substances are quenched by the potassium iodide and the fluorescence maximum of carbazole is shifted to longer wavelength by the ionization with sodium methoxide. In the present investigation, the applicability of this method to the determination of benzocarbazoles was studied. The results indicated that the fluorescence in tensity of 5H-benzo[b]carbazole was stable and measured without interferences of 11 H-benzo[a]carbazole and 7H-benzo-[c]carbazole. 5H-Benzo[a]carbazole could be determined by measuring the fluorescence intensity at 533 nm with excitation at 470 nm. This method could be applied for the determination of 5H-benzo-[b]carbazole incommercial carbazole. The limit of the determination was 0.Ol%.
社団法人日本分析化学会の論文
1983-03-05