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Radical formation during phenol oxidation in aqueous media
Author(s) -
Shendrik A. N.,
Odaryuk I. D.,
Kanibolotska L. V.,
Kalinichenko E. A.,
Tsyapalo A. S.,
Beznos V. V.,
Kanibolotsky A. L.
Publication year - 2012
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.20592
Subject(s) - chemistry , pyrogallol , catechol , hydroquinone , gallic acid , ascorbic acid , kinetics , chemiluminescence , phenol , radical , aqueous solution , oxygen , medicinal chemistry , hydroxyl radical , aqueous medium , nitrosation , antioxidant , organic chemistry , food science , physics , quantum mechanics
Kinetics of oxygen consumption, reaction product formation, and chemiluminescence during polyphenol oxidation by molecular oxygen in alkaline aqueous media with additions of l ‐ascorbic acid (AscH 2 ) and homocysteine (HCys) has been investigated. In these processes, AscH 2 and HCys have been shown to act as typical radical‐reaction inhibitors that can be used for determinations of the radical formation rates. The rates of radical formation during oxidation of hydroquinone ( p ‐QH 2 ), chlorohydroquinone (Cl‐QH 2 ), 2,5‐dichlorohydroquinone (2,5Cl‐QH 2 ), catechol (PK), 4‐methylcatechol (4CH 3 ‐PK), pyrogallol (PG), gallic acid (GK) have been estimated. © 2012 Wiley Periodicals, Inc. Int J Chem Kinet 44: 414–422, 2012