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Reverse Flow Injection Chemiluminescence Method for the Determination of Tannic Acid

WANG Shu-hao *,WANG Liang-yu,MA Chun-lin (Department of Chemistry,Liaocheng University,Liaocheng,Shandong,252059)  
A simple, rapid and accurate reverse flow injection chemiluminescence method for the determination of tannic acid based on luminol-KIO 4-tannic acid system is developed. The linear range of the determination is 2.0×10 -8 ~ 6.0×10 -6 g/mL for tannic acid. The detection limit is 1.12×10 -9 g/mL. The method has been applied to the determination of the content of tannic acid in Chinese gall and fructus chebulae with satisfactory results.
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