title: Determination of oxalate, sulfate and nitrate in honey and honeydew by ion-chromatography.
abstract: An ion chromatographic method for determining the anions oxalate, sulfate and nitrate in honey and honeydew samples is described. To prevent matrix interference and to isolate the anions a clean-up step using solid-phase extraction on anionic cartridges and eluting with a 0.01 M chromate solution is recommended. The anions are separated on an anionic column with a mobile phase of borate-gluconate buffer and using conductimetric detection. The method is applied to the analysis of samples from different botanical origin.
authors.affiliation: Analytical Chemistry Department, Faculty of Sciences, University of Valladolid, Spain.
authors.forename: M J
authors.initials: MJ
authors.lastname: del Nozal
authors.forename: J L
authors.initials: JL
authors.lastname: Bernal
authors.forename: J C
authors.initials: JC
authors.lastname: Diego
authors.forename: L A
authors.initials: LA
authors.lastname: Gómez
authors.forename: J M
authors.initials: JM
authors.lastname: Ruiz
authors.forename: M
authors.initials: M
authors.lastname: Higes
mesh_terms: D002138:Calibration; D002853:Chromatography, Liquid / Q000379:methods*; D005638:Fruit / Q000737:chemistry*; D006722:Honey / Q000032:analysis*; D009566:Nitrates / Q000032:analysis*; D019815:Oxalic Acid / Q000032:analysis*; D012680:Sensitivity and Specificity; D013431:Sulfates / Q000032:analysis*
chemical_list: D009566:Nitrates; D013431:Sulfates; D019815:Oxalic Acid