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1,10‐Phenanthroline–H 2 O 2 –KSCN–CuSO 4 –NaOH oscillating chemiluminescence system
Author(s) -
Sorouraddin M. H.,
Iranifam M.
Publication year - 2008
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.1084
Subject(s) - chemiluminescence , induction period , chemistry , phenanthroline , copper , reagent , oscillation (cell signaling) , hydrogen peroxide , analytical chemistry (journal) , halide , inorganic chemistry , briggs–rauscher reaction , catalysis , chromatography , biochemistry , organic chemistry
Abstract In this paper, oscillating chemiluminescence (CL), 1,10‐phenanthroline H 2 O 2 –KSCN–CuSO 4 –NaOH system, was studied in a batch reactor. The system described is a novel, slowly damped oscillating CL system, generated by coupling the well‐known Epstein–Orban, H 2 O 2 –KSCN–CuSO 4 –NaOH chemical oscillator reaction with the CL reaction involving the oxidation of 1,10‐phenanthroline by hydrogen peroxide, catalyzed by copper(II) in alkaline medium. In this system, the CL reaction acts as a detector or indicator system of the far‐from‐equilibrium dynamic system. Narrow and slightly asymmetric light pulses of 1.2 s half‐width are emitted at 440 nm with an emitted light time of 200–1000 s, induction period of 3.5–357 s and oscillation period of 28–304 s depending on the reagent concentrations. In this report the effect of the concentration variation of components involved in the oscillating CL system on the induction period, the oscillation period and amplitude was investigated and the parameters were plotted with respect to reagent concentrations. Copper concentration showed a significant effect on the oscillation period. The possible mechanism for the oscillating CL reaction was also discussed. Copyright © 2008 John Wiley & Sons, Ltd.