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Determination of cardamonin using a chemiluminescent flow‐injection method
Author(s) -
Zhang Qunlin,
Myint Aung,
Cui Hua,
Ge Xuewu,
Liu Lijuan,
Chou Guixin
Publication year - 2005
Publication title -
phytochemical analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 72
eISSN - 1099-1565
pISSN - 0958-0344
DOI - 10.1002/pca.867
Subject(s) - chemiluminescence , chemistry , detection limit , chromatography , linear range , relative standard deviation , rhodamine 6g , flow injection analysis , rhodamine b , cerium , analytical chemistry (journal) , organic chemistry , catalysis , photocatalysis , molecule
A sensitive and selective flow injection chemiluminescence method for the determination of cardamonin over the range 1.0 × 10 −8 to 8.0 × 10 −6 g/mL is described. The method is based on the enhancement by cardamonin of the chemiluminescence of the reaction between cerium (IV) and rhodamine 6G in sulphuric acid medium. The optimised flow injection procedure yielded a detection limit for cardamonin of 8.8 × 10 −9 g/mL, whilst the relative standard deviations of intraday and inter‐day precision were below 2.5%. The method has the advantages of high sensitivity and a wide linear range. It was successfully applied to the determination of cardamonin in Alpinia katsumadai Hayata . The mechanism of the chemiluminescence reaction is proposed. Copyright © 2005 John Wiley & Sons, Ltd.