University of North Florida
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Contact Info

Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Website: @unf

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Organic compound

Classification: Organic compound -> gallic acid

Citations 1

"Flow Injection Analysis Of Pyrogallol With Enhanced Electrochemiluminescent Detection"
Anal. Chim. Acta 2000 Volume 423, Issue 2 Pages 247-253
Yu-Gang Sun, Hua Cui, Xiang-Qin Lin, Ying-Hui Li and Hua-Zhang Zhao

Abstract: Potential dependent inhibition and enhancement effects of pyrogallol on the electrochemiluminescence of luminol in alkaline solutions were found. On the basis of enhancement effect, a flow injection method was developed for the determination of pyrogallol. The method was simple, rapid and sensitive with a detection limit of 1.6 x 10^-8 mol/l, linear range of 7.0 x 10^-8-1.0 x 10^-4 mol/l, relative standard deviation of 2.2% for eleven measurements of 5.0 x 10^-6 mol/l pyrogallol. This method was successfully applied to determine the content of pyrogallol in a pyrolysis mixture of gallic acid. The mechanism of the inhibition and enhancement was proposed. Pyrogallol mostly reacted with the di-oxygen species electrogenerated at potentials more positive than 0.50V versus Ag/AgCl and generate superoxide radicals adsorbed on the electrode surface, which led to the enhancement of the electrochemiluminescence of luminol.
Pyrogallol Chemiluminescence Interferences Indirect Optimization