Proceedings of the Chinese Academy of Medical Sciences and the Peking Union Medical College = Chung-kuo i hsueh k'o hsueh yuan, Chung-kuo hsieh ho i k'o ta hsueh hsueh pao 1989-01-01

Determination of avicularin in Polygonum aviculare L. by square wave polarography.

X Q Zhang, L S Xu

Index: Proc. Chin. Acad. Med. Sci. Peking Union Med. Coll. 4(4) , 193-5, (1989)

Full Text: HTML

Abstract

A method for the determination of avicularin in Polygonum aviculare L. is described. Square wave polarography (SWP) with a static mercury drop electrode was used to observe the reduction of avicularin. The supporting electrolyte was an acetate buffer solution of pH 4. Avicularin gives a well-defined peak at a potential of -1.30 V (vs. Ag/AgCl). An excellent linear relationship was obtained between the concentration (1.20-3.59 x 10(-6) mol/L) and peak current. The method can be used to analyze small amounts of sample.