Molecules 2009, 14(9), 3538-3550; doi:10.3390/molecules14093538
Article

Electrochemical Reduction of Coumarins at a Film-Modified Electrode and Determination of Their Levels in Essential Oils and Traditional Chinese Herbal Medicines

Lai-Hao Wang* email and Hsiu-Hua Liuemail
Department of Applied Chemistry, Chia Nan University of Pharmacy and Science, 60 Erh-Jen Road, Section 1, Jen Te, Tainan 71743, Taiwan
* Author to whom correspondence should be addressed.
Received: 22 June 2009; in revised form: 26 August 2009 / Accepted: 9 September 2009 / Published: 11 September 2009
(This article belongs to the Special Issue Coumarins and Xanthones)
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Abstract: The electrochemical reduction of coumarins on glassy carbon and electrodeposited metal electrodes was investigated in a Britton-Robinson buffer (pH 1.87-11.98). The effects of various factors, such as the deposition material, time, and concentration of mercury, on the precision of the analysis were explored. The possible reaction mechanism of the reduction process with regards to scan rates, peak potentials, and currents is discussed. Electroreduction was used to quantitatively determine the levels of coumarins in some essential oils and traditional Chinese herbal medicines. A comparison with high performance liquid chromatography analysis results shows good agreement.
Keywords: coumarins; essential oils and medicinal products; mercury-film electrode

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Cite This Article

MDPI and ACS Style

Wang, L.-H.; Liu, H.-H. Electrochemical Reduction of Coumarins at a Film-Modified Electrode and Determination of Their Levels in Essential Oils and Traditional Chinese Herbal Medicines. Molecules 2009, 14, 3538-3550.

AMA Style

Wang L-H, Liu H-H. Electrochemical Reduction of Coumarins at a Film-Modified Electrode and Determination of Their Levels in Essential Oils and Traditional Chinese Herbal Medicines. Molecules. 2009; 14(9):3538-3550.

Chicago/Turabian Style

Wang, Lai-Hao; Liu, Hsiu-Hua. 2009. "Electrochemical Reduction of Coumarins at a Film-Modified Electrode and Determination of Their Levels in Essential Oils and Traditional Chinese Herbal Medicines." Molecules 14, no. 9: 3538-3550.

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