title: Chemiluminescence study on the peroxidation of linoleic acid initiated by the reaction of ferrous iron with hydrogen peroxide.
abstract: Linoleic acid was used as a model system to study lipid peroxidation initiated by the reaction of ferrous iron with hydrogen peroxide. Low-level chemiluminescence of the peroxidation was measured with a high-sensitivity single-photon counter. It was found that the luminescence primarily comes from the dimol reaction of singlet oxygen and that the peak intensity of emission is a quadratic function of the concentration of either Fe2+ or H2O2, provided that the other Fenton reagent is in great excess. Under the same conditions, analysis on reaction kinetics shows a linear relationship between the maximal level of the initiator formed by the Fenton reaction and the initial concentration of Fe2+ or H2O2. This implies that the peak intensity of the chemiluminescence may be a good index of the maximal level of the initiator.
authors.affiliation: Institute of Biophysics, Chinese Academy of Sciences, Beijing 100080, P.R. China.
authors.forename: S
authors.initials: S
authors.lastname: Xun
authors.forename: T
authors.initials: T
authors.lastname: Jingdong
authors.forename: Z
authors.initials: Z
authors.lastname: Zhaonan
authors.forename: L
authors.initials: L
authors.lastname: Xinyuan