title: Determination of avicularin in Polygonum aviculare L. by square wave polarography.
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.
authors.forename: X Q
authors.initials: XQ
authors.lastname: Zhang
authors.forename: L S
authors.initials: LS
authors.lastname: Xu
mesh_terms: D004365:Drugs, Chinese Herbal / Q000032:analysis*; D005419:Flavonoids / Q000032:analysis*; D011048:Polarography / Q000379:methods
chemical_list: D004365:Drugs, Chinese Herbal; D005419:Flavonoids; C041388:avicularin