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Influence of N_{3}^{-} Ions on Chemiluminescence of the Eu(II)/Eu(III)-H_{2}O_{2} System

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Elbanowski M., Staninski K., Kaczmarek M., Lis S.

Acta Physica Polonica A

1996

vol. 90

issue 1

101-108

The basic system of chemiluminescence investigations of relevant biological and inorganic compounds consists of Eu(II)/Eu(III) - H_{2}O_{2}. In these studies the increase in Eu(III) ion emission intensity usually results from an effective complexation reaction. In the present study, the N_{3}¯ ions are used as a ligand. The increase in the chemiluminescence intensity of the Eu(III) ion, the pH influence (in the range of 4.5-7.5) on the chemiluminescence intensity of the Eu(III) ion, as well as the quenching of the ^{5}D_{0} excited state of the Eu(III) ion are observed due to N_{3}¯ complexation. Taking into account the well-known Fenton system [Fe(II)/Fe(III) - H_{2}O_{2}], containing additionally the N_{3}¯, Eu(III) or Sm(III) ions, we found that the Eu(III) or Sm(III) ions were excited as a result of energy transfer process. A mechanism of the studied reactions is proposed.

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1 Acta Physica Polonica A

1 1996

1 Elbanowski M.

1 Kaczmarek M.

1 Lis S.

1 Staninski K.

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Influence of N_{3}^{-} Ions on Chemiluminescence of the Eu(II)/Eu(III)-H_{2}O_{2} System