27846-29-3Relevant articles and documents
Flow-injection chemiluminescence determination of dihydralazine sulfate in serum using luminol and diperiodatocuprate (III) system
Yang, Chunyan,Zhang, Zhujun,Wang, Jinli
, p. 77 - 82 (2010)
A novel flow-injection chemiluminescence (CL) method for the determination of dihydralazine sulfate (DHZS) is described. The method is based on the reaction of luminol and diperiodatocuprate (K2[Cu(H2IO6)(OH)2],
Interaction of Luminol with the Oscillating System H2O2-KSCN-CuSO4-NaOH
Sattar, Simeen,Epstein, Irving R.
, p. 275 - 277 (1990)
Two types of oscillating chemiluminescence are observed when luminol is added to the oscillating system H2O2-KSCN-CuSO4-NaOH.Narrow bursts of light, with intensity proportional of the concentration of luminol, occurs at the same time as the sharp increase in the concentration of a copper peroxide complex that is a key species in the oscillating of the luminol-free system.A second set of broad, low-intensity oscillations is apparent at luminol concentrations below 10-4 M.These are ascribed to the slower reaction of luminol with superoxide.A skeleton mechanism for the action of luminol is proposed, but testing it will require refinement of the mechanism of the H2O2-KSCN-CuSO4-NaOH oscillator.
The Equilibrium Reaction of the Luminol Radical with Oxygen and the One-Electron-Reduction Potential of 5-Aminophthalazine-1,4-dione
Merenyi, Gabor,Lind, Johan,Eriksen, Trygve E.
, p. 2320 - 2323 (1984)
The kinetics of the redox reaction of one-electron-oxidized luminol with molecular oxygen has been studied with chemiluminescent techniques.The rate constants of the forward and reverse reactions have been determined to be 550 +/- 100 and (2.5 +/- 1.6)E9 M-1s-1, respectively.These values afforded the one-electron-reduction potential of 5-aminophthalazine-1,4-dione with E0 = 240 +/- 20 mV vs.NHE.
QUANTIFICATION OF HYDROGEN PEROXIDE IN PLANT EXTRACTS BY THE CHEMILUMINESCENCE REACTION WITH LUMINOL
Warm, Erich,Laties, George G.
, p. 827 - 832 (1982)
The chemiluminescence of luminol (3-aminophthalhydrazide) with H2O2 has been used to quantify endogenous amounts of H2O2 in plant tissues.The reaction is linear over at least three orders of magnitude between 1E-5 and 1E-2 M H2O2.Interference by coloured
Chemiluminescence of 5-Aminophthalazine-1,4-dione in the Presence of Hydrogen Peroxide
Eriksen, Trygve E.,Lind, Johan,Merenyi, Gabor
, p. 2137 - 2148 (1981)
In aqueus solutions containing luminol, H2O2, and ClO2-, chlorine dioxide (ClO2.) is generated by pulse radiolysis.ClO2. oxidizes luminol to 5-aminonaphthalazine-1,4-dione (azaquinone).The latter reacts with HO2- to yield an intense chemiluminescence.The results obtained from detailed kinetic study at various pH values and from product analysis are consistent with the following conclusions: The azaquinone combines with the HO2- to form an open carbon-centred peroxide.The latter decomposes via a short-lived endoperoxide in two parallel reactions.The first of thes yields oxygen and luminol while the second one generates nitrogen and ultimately excited 3-aminophthalate with an efficiency of 4 percent.The kinetics of the present system is compared with that of other similar systems reported.Based on observed differrences, the presence of several peroxide intermediates is implied.In addition evidence is presented that 3-aminophthalate may not be the sole emitter in every chemiluminescent system based on luminol.
Nonlinear multicomponent kinetic analysis for the simultaneous stopped-flow determination of chemiluminescence enhancers
Diaz, Aurora Navas,Garcia, Jose Antonio Gonzalez
, p. 988 - 993 (1994)
Protocatechuic and caffeic acids were determined from kinetic data of luminol chemiluminescence induced by hexacyanoferrate(III) enhanced by phenolic acids. The phenolic acids could be quantified both separately and together using the stopped-flow techniq
DPPH·–luminol chemiluminescence system and its application in the determination of scutellarin in pharmaceutical injections and rat plasma with flow injection analysis
Yao, Hong,Huang, Xiaomei,Shi, Peiying,Lin, Zhen,Zhu, Meilan,Liu, Ailin,Lin, Xinhua,Tang, Yuhai
, p. 588 - 595 (2017/05/15)
In this article, a DPPH·–luminol chemiluminescence (CL) system was reported and the CL mechanism was discussed according to the CL kinetic properties after sequence injecting DPPH· into the DPPH·–luminol reaction mixture. It was observed that scutellarin could inhibit the CL response of the DPPH·–luminol system. Based on this observation, a simple and rapid flow injection CL method was developed for the determination of scutellarin using the inhibition effect in alkaline medium. The optimized chemical conditions for the CL reaction were 5?×?10?6?mol/L DPPH· and 1.0?×?10?4?mol/L luminol in 0.01?mol/L NaOH. Under optimized conditions, the CL intensity was inversely proportional to the concentration of scutellarin over the ranges 5–2000 and 40–3200?ng/ml in pharmaceutical injection and rat plasma, respectively. The limits of detection (S/N?=?3) were 5 and 40?ng/ml in preparations and rat plasma, respectively. Furthermore, the precision, recovery and stability of the validated method were acceptable for the determination of scutellarin in both pharmaceutical injections and rat plasma. The presented method was successfully applied in the determination of scutellarin in pharmaceutical injections and real rat plasma samples.
