title: Simultaneous determination of oxalic, fumaric, maleic and succinic acids in tartaric and malic acids for pharmaceutical use by ion-suppression reversed-phase high performance liquid chromatography.
abstract: A reliable method for the simultaneous determination of oxalic, fumaric, maleic, and succinic acids in tartaric and malic acids for pharmaceutical use by reversed-phase ion-suppression high performance liquid chromatography is presented. HPLC was achieved on a Nova-Pak C18 column by isocratic elution using water adjusted to pH 2.10-2.15 with perchloric acid, and detection was by UV adsorption at a wavelength of 210 nm. This method was found to be superior to previous liquid chromatography as well as other classical assay, and to be an attractive choice for the analysis of these compounds.
authors.affiliation: Center of Materials Analysis, Nanjing University, People's Republic of China. hzlian@nju.edu.cn
authors.forename: H Z
authors.initials: HZ
authors.lastname: Lian
authors.forename: L
authors.initials: L
authors.lastname: Mao
authors.forename: X L
authors.initials: XL
authors.lastname: Ye
authors.forename: J
authors.initials: J
authors.lastname: Miao
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods; D003998:Dicarboxylic Acids / Q000032:analysis; D004340:Drug Contamination; D005069:Evaluation Studies as Topic; D005650:Fumarates / Q000032:analysis*; D006863:Hydrogen-Ion Concentration; D008293:Malates / Q000032:analysis*; D008298:Maleates / Q000032:analysis*; D019815:Oxalic Acid / Q000032:analysis*; D010472:Perchlorates / Q000737:chemistry; D015203:Reproducibility of Results; D019802:Succinic Acid / Q000032:analysis*; D013644:Tartrates / Q000032:analysis*
chemical_list: D003998:Dicarboxylic Acids; D005650:Fumarates; D008293:Malates; D008298:Maleates; D010472:Perchlorates; D013644:Tartrates; C030298:malic acid; C032005:fumaric acid; C030272:maleic acid; D019815:Oxalic Acid; D019802:Succinic Acid; C029768:tartaric acid