Chemiluminescence of Luminol Initiated by Iron(II) Ions

Quantum yields are determined for luminol and Fe II in the chemiluminescence of luminol initiated by Fe II salt solutions. It is concluded that chemiluminescence is initiated not by superoxide anion but by a more efficient primary oxidant. The quenching of chemiluminescence under the action of dimet...

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Bibliographic Details
Published inRussian Journal of Physical Chemistry A Vol. 96; no. 5; pp. 1099 - 1105
Main Authors Tsaplev, Yu. B., Trofimov, A. V.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 2022
Springer Nature B.V
Subjects
Chelation
Chemiluminescence
Chemistry
Chemistry and Materials Science
Dimethyl sulfoxide
Ethylenediaminetetraacetic acids
Hydroxyl radicals
Oxidation
Oxidizing agents
Photochemistry and Magnetochemistry
Physical Chemistry
Saline solutions
hydroxyl radical
autooxidation
superoxide anion
luminol chemiluminescence
Fe
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Summary:Quantum yields are determined for luminol and Fe II in the chemiluminescence of luminol initiated by Fe II salt solutions. It is concluded that chemiluminescence is initiated not by superoxide anion but by a more efficient primary oxidant. The quenching of chemiluminescence under the action of dimethyl sulfoxide shows that the hydroxyl radical also cannot be a primary oxidant. It is established that the effect the chelation of Fe II by EDTA has on chemiluminescence is not related to loss of the initiating action of Fe II EDTA in the luminol chemiluminescence. Instead, it is associated with its quick transformation into Fe III EDTA when preparing a mixture of Fe II and EDTA-Na 2 .
ISSN:0036-0244
1531-863X
DOI:10.1134/S0036024422050284