The kinetics of the reaction between 1,2,3-trihydroxybenzene (pyrogallol) and O2 (autoxidation) have been determined by monitoring the concentration of dissolved dioxygen with a polarographic oxygen electrode. The reaction is carried out in pseudo-first-order excess pyrogallol, 25掳C, 0.08 M NaCl...
(Elements & Compounds) a white lustrous crystalline soluble phenol with weakly acidic properties; 1,2,3-trihydroxybenzene: used as a photographic developer and for absorbing oxygen. Formula: C6H3(OH)3 [C20: from pyro- + gall(ic)2+-ol1] ...
wave propagation/ oxygen inhibitory effectDepending on the concentrations of reagents, the state of the Belousov鈥揨habotinsky (BZ) reaction with pyrogallol (PG) is found to be stable reduced, excitable, oscillatory, or stable oxidized. For the oscillating solutions, the period decreases when either...
The reaction of pyrogallol[4]arenes with gallium nitrate results in the formation of distorted spherical/rugby-ball-shaped metal-seamed pyrogallol[4]arene hexamers (Fig. 6).65 Unlike the copper-seamed PgCn hexamers, gallium-seamed hexamers contain fewer metal centers (12) in the capsule seam, se...
Since superoxide dismutase and catalase inhibited these reactions extensively, active oxygens such as superoxide and hydrogen peroxide were considered to be involved in the oxido-reductive reaction of human hemoglobin by pyrogallol. It was also found that the metabolism of pyrogallol to purpurogallin ...
摘要 Pyrogallol is a simple phenolic compound that serves as an attractive chemical with broad applications in food, agricultural, dyeing, printing, cosmetic, photography, chemical and pharmaceutical industries owing to its antioxidant, antibacterial, antiseptic, anticancer, oxygen-absorbing and strong reduc...
The Co-MOF not only acted as a catalyst to accelerate the generation of reactive oxygen species in the CL reaction, but also worked as an emitter to further enhance the CL. Based on the Co-MOF-NaIO4-H2O2 system, a highly sensitive CL analysis method was established ...
Up to pH 9.1 the reaction is still inhibited to over 90% by superoxide dismutase, but at higher alkalinity, O 2 · -independent mechanisms rapidly become dominant. Catalase has no effect on the autoxidation but decreases the oxygen consumption by half, showing that H 2 O 2 is the stable ...
The standard addition recovery is not stable, with the decrease with time due to the existence of peroxidases in the tomato suspension solution and oxygen from air, which follows a first order reaction with an apparent first order reaction constant of 0.0852 min鈭 1....
Meandering spiral waves in a bubble-free Belousov–Zhabotinsky reaction with pyrogallol[J] . Jiraporn Luengviriya,Porramain Porjai,Metinee Phantu,Malee Sutthiopad,Boosayarat Tomapatanaget,Stefan C. Müller,Chaiya Luengviriya.Chemical Physics Letters . 2013...