hydroxyl radical


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Related to hydroxyl radical: superoxide anion, superoxide

hydroxyl radical:

see hydroxidehydroxide
, chemical compound that contains the hydroxyl (−OH) radical. The term refers especially to inorganic compounds. Organic compounds that have the hydroxyl radical as a functional group are called alcohols; the hydroxyl radical is also present in the carboxyl group
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hydroxyl radical

(hÿ-droks -ăl) The radical OH, consisting of an oxygen and hydrogen atom bound together. It was the first interstellar molecule to be detected (1963) in the radio region of the spectrum and is also associated with certain red and infrared stars (see OH/IR star; maser source). The spectral lines – OH lines – occur at 18, 6.3, 5.0, 3.7, and 2.2 cm.
References in periodicals archive ?
This procedure includes the manufacturing of non-selective hydroxyl radicals (HO*) which deteriorate the dye structure by the following reactions:
See appendix 1 to view the process in which these hydroxyl radicals may be made.
The success of the basics AOP lies in their ability to produce hydroxyl radicals (H[O.
Turchi & Ollis (1990) & Mueses et al (2013) showed that the photocatalytic mechanism more accepted is based on hydroxyl radical attack in the interface semiconductor/solution (Helmholtz layer).
The EPS of WR-1 presented good flocculating metal chelating and hydroxyl radical scavenging activities while moderate superoxide radical scavenging lipid peroxidation inhibition and lipid emulsification activities were determined.
However, an optimal hydrogen peroxide concentration exists because overdosing of hydrogen peroxide would lead to a reaction with hydroxyl radical and the formation of H[O.
Compared with quercetin following the replacements of O-Glc--Rha and O--Glc of OH at C3 of the flavone C-ring (Figure 3) the hydroxyl radical scavenging activities of rutin and isoquercitrin decreased by ~55.
But the theory that hydroxyl radicals play a role doesn't hold up, he says.
These reactions consume the hydroxyl radical, which decreases the oxidation potential of the medium [43].
According to Equations (1) and (2), the stage characterizing the start of ozone decomposition may be artificially accelerated by an increase in pH and by compounds that enhance the formation of the hydroxyl radical *OH.
Fenton's reagent a mixture of ferrous (Fe2+) ion and hydrogen peroxide which produces hydroxyl radicals (Eq.