Kinetics of reaction between hydroxyl radical formed by beta-rays in tritiated water and tea catechin: Application of the solid state spin trapping method

1999 ◽  
Vol 239 (1) ◽  
pp. 217-220 ◽  
Author(s):  
H. Yoshioka ◽  
H. Kurosaki ◽  
H. Yoshioka
Keyword(s):  
Solid State ◽  
Hydroxyl Radical ◽  
Tritiated Water ◽  
Spin Trapping ◽  
Trapping Method ◽  
Kinetics Of Reaction ◽  
State Spin ◽  
Kinetics Of

Study on Kinetics of Reaction between ZrNi5 and Water Vapor

2012 ◽  
Vol 581-582 ◽  
pp. 694-697
Author(s):  
Yong Yao ◽  
De Li Luo ◽  
Zhi Yong Huang ◽  
Jiang Feng Song
Keyword(s):  
Water Vapor ◽  
Reaction Rate ◽  
Arrhenius Equation ◽  
Tritiated Water ◽  
First Order ◽  
Order Chemical Reaction ◽  
First Order Chemical Reaction ◽  
Kinetics Of Reaction ◽  
Reaction Activation Energy ◽  
Kinetics Of

In order to evaluate the feasibility of tritium recovery from tritiated water by thermochemical decomposition using ZrNi5, the kinetics of reaction between ZrNi5 and water vapor was studied by thermogravimetric method in the temperature range from 673K to 823K. The result shows that reaction rate increased significantly with the increasing of temperature and H2O concentration; the reaction mechanism for ZrNi5 can be described by the first-order chemical reaction, and the reaction is first order for H2O concentration. The reaction activation energy of ZrNi5 is 55.8kJ/mol calculated from the Arrhenius equation.

Scavenging effects of phenylpropanoid glycosides from Pedicularis on superoxide anion and hydroxyl radical by the Spin trapping method(95)02255-4

1996 ◽  
Vol 51 (5) ◽  
pp. 687-691 ◽  
Author(s):  
Panfen Wang ◽  
Jiuhong Kang ◽  
Rongliang Zheng ◽  
Zhenghong Yang ◽  
Jinfen Lu ◽  
...  
Keyword(s):  
Hydroxyl Radical ◽  
Superoxide Anion ◽  
Spin Trapping ◽  
Phenylpropanoid Glycosides ◽  
Trapping Method

Bactericidal action of cobalt(II) phthalocyanine-modified electrode

2000 ◽  
Vol 04 (02) ◽  
pp. 175-178 ◽  
Author(s):  
HIROSHI UKAI ◽  
TAKASHI ICHINOHE ◽  
SATORU MATSUMOTO ◽  
MUTSUMI KIMURA ◽  
TOSHIKI KOYAMA ◽  
...  
Keyword(s):  
Hydroxyl Radical ◽  
Bactericidal Activity ◽  
Spin Trapping ◽  
Bactericidal Action ◽  
Electrochemical System ◽  
Radical Species ◽  
E Coli ◽  
Esr Spin Trapping ◽  
Trapping Method ◽  
Electrocatalytic Reaction

The bactericidal activity of an electrochemical system with a cobalt(II) phthalocyanine-modified Ti electrode was studied. In the presence of NaBO 3, strong bactericidal activity was observed against E. coli with electroreduction for 30 min. If an unmodified Ti electrode was used, no bactericidal activity was observed in the electrochemical system. By the ESR spin-trapping method using 5,5-dimethyl-1-pyrroline-N-oxide as the spin-trapping reagent, the radical species generated in the electrocatalytic reaction was found to be hydroxyl radical, which acts as the potent cytocidal species in the system.

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