Volume 30, Issue 4 pp. 837-841
Full Paper

Determination of Gallic Acid by Flow Injection Analysis Based on Luminol-AgNO3-Ag NPs Chemiluminescence System

Shifeng Li

Corresponding Author

Shifeng Li

College of Chemistry and Materials Science, Anhui Key Laboratory of Functional Molecular Solids, Anhui Key Laboratory of Molecule-based Materials, Anhui Normal University, Wuhu, Anhui 241000, China

College of Chemistry and Materials Science, Anhui Key Laboratory of Functional Molecular Solids, Anhui Key Laboratory of Molecule-based Materials, Anhui Normal University, Wuhu, Anhui 241000, China, Tel.: 0086-553-3937138; Fax: 0086-553-3869303Search for more papers by this author
Huimin Sun

Huimin Sun

College of Chemistry and Materials Science, Anhui Key Laboratory of Functional Molecular Solids, Anhui Key Laboratory of Molecule-based Materials, Anhui Normal University, Wuhu, Anhui 241000, China

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Dong Wang

Dong Wang

College of Chemistry and Materials Science, Anhui Key Laboratory of Functional Molecular Solids, Anhui Key Laboratory of Molecule-based Materials, Anhui Normal University, Wuhu, Anhui 241000, China

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Li Qian

Li Qian

College of Chemistry and Materials Science, Anhui Key Laboratory of Functional Molecular Solids, Anhui Key Laboratory of Molecule-based Materials, Anhui Normal University, Wuhu, Anhui 241000, China

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Yan Zhu

Yan Zhu

College of Chemistry and Materials Science, Anhui Key Laboratory of Functional Molecular Solids, Anhui Key Laboratory of Molecule-based Materials, Anhui Normal University, Wuhu, Anhui 241000, China

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Shanjun Tao

Shanjun Tao

College of Chemistry and Materials Science, Anhui Key Laboratory of Functional Molecular Solids, Anhui Key Laboratory of Molecule-based Materials, Anhui Normal University, Wuhu, Anhui 241000, China

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First published: 07 March 2012
Citations: 36

Abstract

A novel flow injection procedure has been developed for the determination of gallic acid based on the enhancement function for luminol-AgNO3-Ag NPs chemiluminescence (CL) system by gallic acid. The enhancement mechanism was proposed for the reinforcing effect of the gallic acid on the CL system. The UV-vis absorption spectrum and CL emission spectrum were applied to confirm the mechanism. The method is simple, rapid and sensitive with a detection limit of 5×10−10 g·mL−1 and a linear range of 8.0×10−10–1.0×10−7 g·mL−1. The relative standard deviation (RSD) is 1.3% for eleven measurements of 5×10−8 g·mL−1 gallic acid. The method has been successfully applied to the determination of gallic acid in Chinese proprietary medicine–Jianmin Yanhou tablets and synthesized samples.

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