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Flow injection-chemiluminescence determination of puerarin in pharmaceutical preparations
被引:18
|作者:
Zhang, QL
[1
]
Myint, A
[1
]
Liu, LJ
[1
]
Ge, XW
[1
]
Cui, H
[1
]
机构:
[1] Univ Sci & Technol China, Dept Chem, Hefei 230026, Anhui, Peoples R China
关键词:
flow injection;
chemiluminescence (CL);
cerium(IV);
rhodamine;
6G;
puerafin;
D O I:
10.1016/j.jpba.2004.07.036
中图分类号:
O65 [分析化学];
学科分类号:
070302 ;
081704 ;
摘要:
Strong chemiluminescence was observed when cerium(IV) reacted with rhodamine 6G in sulfuric acid medium in the presence of puerarin. This phenomenon has been utilized to design a sensitive and selective flow injection-chemiluminescence method for the determination of puerarin. Under the optimum conditions, the proposed procedure has a linear range between 1.3 x 10(-9) and 8.0 x 10(-7) g/mL, with a detection limit of 8.4 x 10(-10) g/mL puerarin and a relative standard deviation of 1.86% (n = 11) at 5.0 x 10(-8) g/mL puerarin. The method was successfully applied to the determination of puerarin in pharmaceutical preparations. The mechanism of this chemiluminescence reaction has been proposed. (C) 2004 Elsevier B.V. All rights reserved.
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页码:587 / 592
页数:6
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