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Spectral distribution of the radiochemiluminescence from gamma-irradiated humic acid

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Abstract

This study was conducted to investigate radiochemiluminescence (RCL) spectra (340–650 nm), kinetics and absorption spectra of humic acids (HA) after their exposure of γ-radiation (absorbed doses of 1–10 kGy, 60Co) in model systems. The kinetics and spectral distribution of RCL were measured using the single photon counting method (SPC) and cut-off filters. Absorption spectra (range 240–800 nm) of irradiated solutions indicated that post-radiative degradation/polymerization processes take place in the HA changing their macromolecule or properties. The intensity of the delayed RCL was nonlinearly and suggested that complex radical formation mechanisms were still involved in the post-radiative reactions.

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Authors and Affiliations

  1. Faculty of Chemical Technology, Radio- and Photochemistry Department, Poznan University of Technology, ul. Piotrowo 3, 60-965, Poznan, Poland

    W. Goraczko

  2. State High Vocational School, Institute of Ecotechnology, Gniezno, Poland

    J. Slawiński

  3. Faculty of Chemistry, Department of Rare Earths, Adam Mickiewicz University, Poznan, Poland

    K. Staninski

Authors
  1. W. Goraczko
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  2. J. Slawiński
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  3. K. Staninski
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Correspondence to W. Goraczko.

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Goraczko, W., Slawiński, J. & Staninski, K. Spectral distribution of the radiochemiluminescence from gamma-irradiated humic acid. J Radioanal Nucl Chem 277, 613–618 (2008). https://doi.org/10.1007/s10967-007-7124-0

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  • DOI: https://doi.org/10.1007/s10967-007-7124-0

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