title: Analysis of sample of highly water-soluble Th-symmetric fullerenehexamalonic acid C66(COOH)12 by ion-chromatography and capillary electrophoresis.
abstract: Ion chromatography (IC) was used to establish isomer purity of the highly water-soluble sample of fullerenehexamalonic acid, Th-symmetric hexakis-adduct C66(COOH)12. Sharp and symmetric peaks were obtained by IC using 1.0 M potassium hydroxide as eluent and applying gradient elution program. The identity of the two largest peaks in the chromatogram was assigned to Th-C66(COOH)12 and C66H(COOH)11. The developed IC procedure can be used for the semi-quantitative determination of the extent of the partial decarboxylation of the sample. As an alternative analytical technique, a CE procedure was introduced and its performance against IC was compared for this particular case.
authors: Faculty of Chemistry and Chemical Technology, University of Ljubljana, Askerceva 5, 1000 Ljubljana, Slovenia. janez.cerar@fkkt.uni-lj.si
authors: Janez
authors: J
authors: Cerar
authors: Matevz
authors: M
authors: Pompe
authors: Marjan
authors: M
authors: Gucek
authors: Janez
authors: J
authors: Cerkovnik
authors: Joze
authors: J
authors: Skerjanc
mesh_terms: D002627:Chemistry, Physical / Q000295:instrumentation / Q000379:methods; D002852:Chromatography, Ion Exchange / Q000295:instrumentation* / Q000379:methods*; D019075:Electrophoresis, Capillary / Q000379:methods; D037741:Fullerenes / Q000737:chemistry* / Q000302:isolation & purification*; D008314:Malonates / Q000737:chemistry; D012995:Solubility; D013910:Thorium / Q000032:analysis / Q000737:chemistry; D014867:Water / Q000737:chemistry
chemical_list: D037741:Fullerenes; D008314:Malonates; D014867:Water; D013910:Thorium; C030290:malonic acid