title: [Determination of the content of aminopyrine in antongding injection by orthogonal function spectrophotometry].
abstract: Determination of the content of aminopyrine in the antongding injection by orthogonal function spectrophotometry was reported in this paper. The six wavelengths for the determination are 257, 261, 265, 269, 273 and 277 nm. The concentration of aminopyrine in the range of 5-25 microg x mL(-1) is in a good linear relation to P2, and the regression equation is P2 = + 0.018 - 0.032 9c, r = 0.999 9. The average recovery and relative standard deviation are 100.3% and 0.40%, respectively. On the basis of the data observed it is concluded that this method shows no obvious difference as compared with Hebei province pharmacy regulation.
authors.affiliation: Department of Pharmaceutical Analysis, Hebei Medical University, 050017 Shi jiazhuang.
authors.forename: C
authors.initials: C
authors.lastname: Wang
authors.forename: L
authors.initials: L
authors.lastname: Zhang
authors.forename: Y
authors.initials: Y
authors.lastname: He
authors.forename: A
authors.initials: A
authors.lastname: Zhang
authors.forename: Y
authors.initials: Y
authors.lastname: Zhou
authors.forename: R
authors.initials: R
authors.lastname: Chen
authors.forename: Z
authors.initials: Z
authors.lastname: Zhou
authors.forename: W
authors.initials: W
authors.lastname: Liu
authors.forename: Z
authors.initials: Z
authors.lastname: Zhang
mesh_terms: D000632:Aminopyrine / Q000032:analysis*; D004364:Pharmaceutical Preparations / Q000032:analysis*; D013053:Spectrophotometry / Q000379:methods*
chemical_list: D004364:Pharmaceutical Preparations; D000632:Aminopyrine