A new simple and rapid electrochemical method for the determination of hydroxyl radical generated by Fenton reaction and its application

A new simple and rapid electrochemical method for the determination of hydroxyl radical generated by Fenton reaction and its application

A simple and rapid electrochemical method to detect the hydroxyl radical is described. This method employed the reaction between.OH and dimethyl sulfoxide (DMSO) to generate quantitatively formaldehyde, which then reacted with hydrazine hydrochloride at pH 6.2. The product showed a second-order deri...

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Veröffentlicht in:Analytical and bioanalytical chemistry 2002-05, Vol.373 (1-2), p.111-115
Hauptverfasser: Zou, Hong, Tai, Chao, Gu, Xue-Xin, Zhu, Ruo-Hua, Guo, Qi-Hua
Format: Artikel
Sprache:eng
Schlagworte:
Ascorbic Acid
Edetic Acid
Electrochemistry - methods
Formaldehyde - analysis
Hydrogen Peroxide
Hydrogen-Ion Concentration
Hydroxyl Radical - analysis
Indicators and Reagents
Iron
Kinetics
Polarography - methods
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Zusammenfassung:A simple and rapid electrochemical method to detect the hydroxyl radical is described. This method employed the reaction between.OH and dimethyl sulfoxide (DMSO) to generate quantitatively formaldehyde, which then reacted with hydrazine hydrochloride at pH 6.2. The product showed a second-order derivative cathodic wave with the peak potential of -1.08 V( vsSCE) by single sweep oscillopolarography. The electrochemical behavior of the product was investigated by single sweep oscillopolarography and cyclic voltammetry. The experimental conditions for the measurement were optimized and the scavenging activity of some flavonoids on hydroxyl radicals was studied.
ISSN:1618-2642
1618-2650
DOI:10.1007/s00216-002-1254-6