Pulse injection analysis with chemiluminescence detection:: determination of cinnamic acid using the Ru(bipy)32+-KMnO4 system

被引：13

作者：

Han, HY

He, ZK ^{[1
]}

Zeng, YE

机构：

[1] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China

[2] Huainan Teachers Coll, Dept Chem, Huainan 232001, Peoples R China

来源：

ANALYTICA CHIMICA ACTA | 1999年 / 402卷 / 1-2期

关键词：

chemiluminescence; cinnamic acid; tris-(2,2 '-bipyridine)ruthenium(II); potassium permanganate;

D O I：

10.1016/S0003-2670(99)00547-4

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new chemiluminescence method for the determination of cinnamic acid is described. This method is based on the chemiluminescence produced in the reaction of Ru(bipy)(3)(2+) (bipy = 2,2'-bipydyl) and cinnamic acid with KMnO4. Under optimal conditions, the linear range and detection limit of cinnamic acid are 3.0 x 10(-9)-3.0 x 10(-6) g ml(-1) and 1.2 x 10(-9) g ml(-1), respectively. The relative standard deviation is 2.2% for the determination of 1.0 x 10(-7) g ml(-1) cinnamic acid (n = 11). The proposed method allows the determination of cinnamic acid with 2-3 orders of magnitude higher sensitivity than that of other reported methods based on various analytical techniques. It is simple, sensitive and easy to operate and can be used for the determination of cinnamic acid in human urine. A discussion on the possible reaction mechanism is presented. (C)1999 Elsevier Science B.V. All rights reserved.

引用

页码：113 / 118

页数：6

共 26 条

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