Results 141 to 150 of about 15,619 (184)

The influence of dioxygen on luminol chemiluminescence

Luminescence, 2009
AbstractAssays of peroxy compounds are commonly performed after chromatographic separation of analysed mixtures. In high‐performance liquid chromatography (HPLC), solvent reservoirs are sparged by helium or inline vacuum‐degassed in order to control the compressibility of the solvents for efficient pumping.
Stefan, Baj, Tomasz, Krawczyk, Karina, Staszewska   +2 more
openaire   +2 more sources

Luminol-induced neutrophil chemiluminescence

Biochimica et Biophysica Acta (BBA) - General Subjects, 1980
Out studies suggest that luminol directly enhances the chemiluminescence of human neutrophils. We show that a significant peak in chemiluminescence production in a particle-free system occurs between 5 and 15 min following exposure of cells to micromolar concentrations of luminol.
C D, Allred, J, Margetts, H R, Hill
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Metabolism and disposition of luminol in the rat

Xenobiotica, 2000
1. The metabolism and disposition of Luminol (LMN, 3-aminophthalhydrazide), a widely used forensic and laboratory reagent that chemiluminesses upon oxidation, was determined as part of its overall toxicological characterization. 2. Radiolabelled LMN was well absorbed, metabolized and excreted following p.o. administration of a range of doses. About 90%
J M, Sanders, L J, Chen, L T, Burka, H B, Matthews   +3 more
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Synthesis of photosensitive luminol releasing compound, luminol-O-2-nitrobenzylate

Journal of Photochemistry and Photobiology A: Chemistry, 2004
Abstract Luminol- O -2-nitrobenzylate ( 1 ), which releases luminol upon light irradiation at 366 nm and can measure light power, was developed. 1 has a 2-nitrobenzyl group at the carbonyl oxygen of luminol. The released luminol emitted light in the presence of NaOH and H 2 O 2 .
Manabu Nakazono, Makoto Asechi, Kiyoshi Zaitsu   +2 more
openaire   +1 more source

Effect of cholinesterase on the chemiluminescence of luminol

Experientia, 1981
The chemiluminescent oxidation of luminol was activated by cholinesterase. Physostigmine and dimethoate inhibited the luminescence, TEA had no effect. These results indicate that the esteratic site is responsible for the activating action of the enzyme.
openaire   +2 more sources

Chemiluminescence Reactions of Luminol and N-Octyl Luminol with Hypochlorite in Anionic Surfactants

Moscow University Chemistry Bulletin, 2019
A comparative study of the kinetics of the chemiluminescent reaction of luminol, localized in the aqueous phase, and its hydrophobic analogue, N-octyl luminol, localized in the micellar phase, with the hypochlorite ion in anionic sodium dodecyl sulfate micelles at various surfactant concentrations is carried out.
T. V. Yankova, P. V. Melnikov, N. K. Zaitsev   +2 more
openaire   +1 more source

Chemiluminescence of luminol and haemin

Talanta, 1962
Abstract A study of the luminescence of haemin-luminol mixtures has shown that haemin is a chemiluminescent material, and a mechanism is proposed for the haemin-luminol reaction. The course of the reaction depends on the relative concentrations of the components and the alkalinity of the solution.
L. Erdey, W.F. Pickering, C.L. Wilson
openaire   +1 more source

The effect of quenchers on the chemiluminescence of luminol and lucigenin

Journal of Bioluminescence and Chemiluminescence, 1989
AbstractThe chemiluminescence of luminol and lucigenin is often used to detect the production of reactive oxygen derivatives by phagocytic cells. Also, several quenchers and enzyme inhibitors are used to determine which oxygen derivatives are responsible for the observed effects.
openaire   +3 more sources

Chemiluminescence of luminol in the presence of hematin compounds

Analytical Biochemistry, 1965
Abstract A rapid and sensitive method has been deseribed for the determination of micro amounts of hematin iron. The assay is based on the luminescence of alkaline luminol in the presence of hematin iron and hydrogen peroxide. The assay system employs the direct recording of the flash of light produced in the reaction with a Sanborn preamplifier and ...
H A, NEUFELD, C J, CONKLIN, R D, TOWNER
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Luminol peroxidation catalyzed by human isoferritins

Archives of Biochemistry and Biophysics, 1991
The role of ferritin in catalyzing the oxidation of luminol with the production of chemiluminescence was investigated. The effect of pH was compared to its effect on K3Fe(CN)6-catalyzed oxidation and different pH optima were recorded for the two catalysts.
R, Henley, M, Worwood
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