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- W2605874920 abstract "Examinations were made on the precipitation and color reactions of 2-hydroxy-3-amino-1, 4-naphthoquinone (3-aminolawsone) and metal ions, and their limit of identification was determined. Of the 26 Kinds of common metal ions, the naphthoquinone reacted with BiIII and HgII at pH 3.2 and with BiIII, HgII, CuII, ZnII, FeIII, and AlIII at pH 6.8 to produce bathochromic violet to blue precipitate or color. The reaction with BiIII, CuII, and FeIII in neutral solution was comparatively sensitive. The pH at which these metal ions begin to form precipitate or coloration with the naphthoquinone and pH at which the reaction completes were measured. The pH at which the reaction begins was 0.2 with BiIII, 2.7-2.9 with HgII, 3.2-3.3 with CuII, 4.7 with FeIII, 4.8-4.9 with AlIII, and 6.1-6.2 with ZnII. These facts reveal that selective detection of HgII and CuII, or specific detection of BiIII would be possible by adjustment of pH of the reaction mixture." @default.
- W2605874920 created "2017-04-28" @default.
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- W2605874920 date "1961-01-01" @default.
- W2605874920 modified "2023-10-17" @default.
- W2605874920 title "Studies on Application of Naphthoquinone Derivatives as Organic Reagents. II" @default.
- W2605874920 doi "https://doi.org/10.1248/yakushi1947.81.5_627" @default.
- W2605874920 hasPublicationYear "1961" @default.
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