title: A new enhanced oscillating chemiluminescence system with increased chemiluminescence intensity and oscillation time.
abstract: Oscillating chemical reactions are complex systems, involving a large number of chemical species. In an oscillating chemical reaction, some species, usually a reaction intermediate, exhibit fluctuation in its concentration. In this report, oscillating chemiluminescence produced by the addition of thiosemicarbazide (TSC) to the oscillating system H(2)O(2)-KSCN-CuSO(4)-NaOH was investigated using luminometry method. The effects of complexing agents, triethylenetetramine (TETA) and D-penicillamine, on the behavior of the oscillating system were investigated. Moreover, the influence of non-aqueous solvents, dimethyl sulfoxide (DMSO), nitromethane and acetonitrile, was studied. In the presence of solvents with high protophility, the chemiluminescence (CL) intensity was increased (sevenfold), the light emitting and oscillating time was enhanced by threefold. In addition, the effect of presence of non-ionic, cationic, and anionic surfactants was investigated. Non-ionic surfactant increased the intensity of the oscillating CL reaction by 4.5-fold.
authors: Department of Analytical Chemistry, Faculty of Chemistry, Tabriz University, Tabriz, Iran. soruraddin@tabrizu.ac.ir
authors: M H
authors: MH
authors: Sorouraddin
authors: M
authors: M
authors: Iranifam
authors: Kaveh
authors: K
authors: Amini