A Sensitive Chemiluminescence Method for Determination of Hydroquinone and Catechol

A novel flow-injection chemiluminescence(CL)method has been developedfor the determination of hydroquinone (HQ) and catechol (CT), based on their inhibition ofthe chemiluminescence reaction of luminol–KMnO4–β-cyclodextrin (β-CD). It was foundthat β-cyclodextrin could effectively enhance the chemilum...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2007-04, Vol.7 (4), p.578-588
Main Authors: Zhao, Lijun, Lv, Baoqiang, Yuan, Hongyan, Zhou, Zaide, Xiao, Dan
Format: Article
Language:English
Subjects:
catechol
chemiluminescence
determination
flow injection analysis
Full Research Paper
hydroquinone
Sensors
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Summary:A novel flow-injection chemiluminescence(CL)method has been developedfor the determination of hydroquinone (HQ) and catechol (CT), based on their inhibition ofthe chemiluminescence reaction of luminol–KMnO4–β-cyclodextrin (β-CD). It was foundthat β-cyclodextrin could effectively enhance the chemiluminescence produced from thereaction of luminol with KMnO4 in basic media. The proposed method is simple, rapid,convenient and sensitive, has a linear range of 1–20 ng/mL for catechol with a detectionlimit of 0.4 ng/mL, and 1–10 ng/mL for hydroquinone with a detection limit of 0.1 ng/mL,respectively. The possible mechanism of the CL reaction is also discussed
ISSN:1424-8220
1424-8220
DOI:10.3390/s7040578