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THE REACTIVITY OF SUPEROXIDE (O2‐) and ITS ABILITY TO INDUCE CHEMILUMINESCENCE WITH LUMINOL

Gábor Merényi, Johan Lind, Trygve E. Eriksen

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Abstract

Abstract— The quantum yield and the kinetics of O‐induced luminol chemiluminescence was investigated in a broad pH interval at varying luminol and concentrations. It is suggested that the weak chemiluminescence observed is mediated via a luminol‐superoxide‐adduct proposed to be an a‐hydroxyperoxyl radical. At pH 7 the maximum quantum yield of chemiluminescence per initial percent was determined to be 4 times 10‐8. The degree of involvement in phagocytosis and related processes should be viewed against this maximum limit.

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Abstract— The quantum yield and the kinetics of O‐induced luminol chemiluminescence was investigated in a broad pH interval at varying luminol and concentrations. It is suggested that the weak chemiluminescence observed is mediated via a luminol‐superoxide‐adduct proposed to be an a‐hydroxyperoxyl radical. At pH 7 the maximum quantum yield of chemiluminescence per initial percent was determined to be 4 times 10‐8. The degree of involvement in phagocytosis and related processes should be viewed against this maximum limit.

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Available abstract

Abstract— The quantum yield and the kinetics of O‐induced luminol chemiluminescence was investigated in a broad pH interval at varying luminol and concentrations. It is suggested that the weak chemiluminescence observed is mediated via a luminol‐superoxide‐adduct proposed to be an a‐hydroxyperoxyl radical. At pH 7 the maximum quantum yield of chemiluminescence per initial percent was determined to be 4 times 10‐8. The degree of involvement in phagocytosis and related processes should be viewed against this maximum limit.

Key concepts: Chemiluminescence, Luminol, Chemistry, Quantum yield, Superoxide, Photochemistry, Yield (engineering), Kinetics

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