Prediction of reaction rate constants of hydroxyl radical with chemicals in water

2020 ◽  
Author(s):  
Xinliang Yu ◽  
Jun Liu
Keyword(s):  
Hydroxyl Radical ◽  
Rate Constants ◽  
Reaction Rate ◽  
Reaction Rate Constants

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.

Photometric hydroxyl radical scavenging analysis of standard natural organic matter isolates

2014 ◽  
Vol 16 (4) ◽  
pp. 764-769 ◽  
Author(s):  
J. E. Donham ◽  
E. J. Rosenfeldt ◽  
K. R. Wigginton
Keyword(s):  
Organic Matter ◽  
Hydroxyl Radical ◽  
Natural Organic Matter ◽  
Rate Constants ◽  
Reaction Rate ◽  
Radical Scavenging ◽  
Reaction Rate Constants

Hydroxyl radical (˙OH) scavenging reaction rate constants of standard natural organic matter (NOM) isolates (k˙OH,NOM) were measured with a rapid background scavenging method.

Estimation of Aqueous-Phase Reaction Rate Constants of Hydroxyl Radical with Phenols, Alkanes and Alcohols

2009 ◽  
Vol 28 (11-12) ◽  
pp. 1309-1316 ◽  
Author(s):  
Ya-nan Wang ◽  
Jingwen Chen ◽  
Xuehua Li ◽  
Siyu Zhang ◽  
Xianliang Qiao
Keyword(s):  
Hydroxyl Radical ◽  
Aqueous Phase ◽  
Rate Constants ◽  
Reaction Rate ◽  
Phase Reaction ◽  
Reaction Rate Constants

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
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