This paper describes rapid and cost-effective analytical procedures for determination of gallic acid after chromatographic separation. Optimum conditions were established for separation and assay of gallic acid, salicylic acid, and tannic acid by thin-layer and paper chromatography (PC). Detection was by means of a sensitive spectrophotometric method based on the coupled redox-complexation reactions occurring in the system Fe(III), gallic acid, and 2,2′-dipyridyl (
= 522 nm). The procedure was then applied to the determination of gallic acid in a pharmaceutical preparation. Thin layer chromatographic analysis with densitometric UV detection at λ = 280 nm gave comparable results.
, Farmakognozja, Wydawnictwo Lekarskie PZWL, Warszawa, 1998.
Kohlmünzer S. , '', in Farmakognozja, (1998) -.
Kohlmünzer S. Farmakognozja1998)| false
, Herba Pol.
(1) (1996) 55–63.
Miłkowska K. , '' (1996) 42Herba Pol.: 55-63.
Miłkowska K. Herba Pol.1996425563)| false
X.J. Mao, X.L. Xiong, Q. Xu
, Yaowu Fenxi Zazhi
(5) (2001) 364–365.
Lin R.C. , '' (2001) 21Yaowu Fenxi Zazhi: 364-365.
Lin R.C. Yaowu Fenxi Zazhi200121364365)| false
, Anal. Chim. Acta
(1) (2001) 119–127.