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Lyoluminescence of luminol in aqueous alkaline metal hydroxides

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Abstract

The lyoluminescence emission spectra of luminol, induced by γ-irradiated NaCl in aqueous alkaline earth metal hydroxides, are recorded. Continuous emission bands are observed in the visible region from 390 to 535 nm. These emission bands on resolution showed two peaks at 430 and 460 nm, respectively in all hydroxides. An additional band of 490 appears in the case of calcium hydroxide. The colour centres released during disintegration of irradiated NaCl crystals in aqueous solution react with luminol to produce various excited molecular species, which are responsible for observed lyoluminescence of luminol.

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Kalkar, C.D., Lala, N.L. Lyoluminescence of luminol in aqueous alkaline metal hydroxides. Journal of Radioanalytical and Nuclear Chemistry Letters 166, 451–464 (1992). https://doi.org/10.1007/BF02163528

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Keywords

  • Hydroxide
  • Emission Spectrum
  • Alkaline Metal
  • Visible Region
  • Emission Band