Determination of the Reaction Rate Constants of Antioxidants with the Hydroxyl Radical by a Rapid-Flow ESR Method

2005 ◽  
Vol 78 (10) ◽  
pp. 1757-1762 ◽  
Author(s):  
Yasunori Ohashi ◽  
Yuya Takeuchi ◽  
Mutsumi Hirama ◽  
Hisashi Yoshioka ◽  
Hiroe Yoshioka
Keyword(s):  
Hydroxyl Radical ◽  
Rate Constants ◽  
Reaction Rate ◽  
Reaction Rate Constants ◽  
Rapid Flow

scholarly journals PREDICTION OF REACTION RATE CONSTANTS OF HYDROXYL RADICAL WITH ORGANIC COMPOUNDS

2014 ◽  
Vol 59 (1) ◽  
pp. 2252-2259 ◽  
Author(s):  
ZHEN CHEN ◽  
XINLIANG YU ◽  
XIANWEI HUANG ◽  
SHIHUA ZHANG
Keyword(s):  
Hydroxyl Radical ◽  
Organic Compounds ◽  
Rate Constants ◽  
Reaction Rate ◽  
Reaction Rate Constants

Determination of Reaction Rate Constants in a Collimated Beam Setup: The Effect of Water Quality and Water Depth

2014 ◽  
Vol 37 (2) ◽  
pp. 134-142 ◽  
Author(s):  
C. H.M. Hofman-Caris ◽  
D. J.H. Harmsen ◽  
B. A. Wols ◽  
E. F. Beerendonk ◽  
L. L.M. Keltjens
Keyword(s):  
Water Quality ◽  
Water Depth ◽  
Rate Constants ◽  
Reaction Rate ◽  
Reaction Rate Constants ◽  
Effect Of Water ◽  
Collimated Beam

scholarly journals Iron(III) hydroxocomplex - methyl viologen dication system as a prospective tool for determination of hydroxyl radical reaction rate constants with environmental pollutants

2021 ◽  
Author(s):  
Yuliya Tyutereva ◽  
Vyacheslav P. Grivin ◽  
Jing Xu ◽  
Feng Wu ◽  
Victor Plyusnin ◽  
...  
Keyword(s):  
Hydroxyl Radical ◽  
Hydroxyl Radicals ◽  
Rate Constants ◽  
Reaction Rate ◽  
Methyl Viologen ◽  
Flash Photolysis ◽  
Laser Flash Photolysis ◽  
Radical Reaction ◽  
Reaction Rate Constants ◽  
Wide Range

Abstract Reactivity of oxidative species with target pollutants is one of the crucial parameters for application of any system based on advanced oxidation processes (AOPs). This work presents new useful approach how to determine the hydroxyl radical reaction rate constants (kOH) using UVA laser flash photolysis technique. Fe(III) hydroxocomplex at pH 3 was applied as a standard source of hydroxyl radicals and methyl viologen dication (MV2+) was used as selective probe for •OH radical. Application of MV2+ allows to determine kOH values even for compounds which do not generate themselves optically detectable transient species in reaction with hydroxyl radicals. Validity of this approach was tested on a wide range of different persistent pesticides and its main advantages and drawbacks in comparison with existing steady-state and time-resolved techniques were discussed.

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