title: Analysis of methylated melamines in reaction mixtures by CZE-MS.
abstract: A fast and reliable method based on CZE coupled to Q-TOF MS for the analysis of methylated melamines is presented. Experiments with UV detection were performed using BGE containing formic acid and TFA to optimize electrophoretic conditions and to achieve baseline separation. Employing a TFA-based electrolyte containing 80% ACN and MS detection, nine different methyl melamines were determined in real samples, which were produced by catalytic hydrogenation of melamine/formaldehyde reaction mixtures. The use of a Q-TOF MS resulted in LOD better than 0.01 mg/L for all compounds and high mass accuracy with mass errors lower than 2.3 ppm.
authors.affiliation: Institute of Analytical Chemistry, Johannes Kepler University, Linz, Austria.
authors.forename: Markus
authors.initials: M
authors.lastname: Himmelsbach
authors.affiliation: Institute of Analytical Chemistry, Johannes Kepler University, Linz, Austria.
authors.forename: Thomas
authors.initials: T
authors.lastname: Schmid
authors.affiliation: Institute of Analytical Chemistry, Johannes Kepler University, Linz, Austria.
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Buchberger
authors.affiliation: Institute for Chemical Technology of Organic Materials, Johannes Kepler University, Linz, Austria.
authors.forename: Clemens
authors.initials: C
authors.lastname: Schwarzinger
authors.affiliation: Institute for Chemical Technology of Organic Materials, Johannes Kepler University, Linz, Austria.
authors.forename: Manuela
authors.initials: M
authors.lastname: List
mesh_terms: D019075:Electrophoresis, Capillary / Q000379:methods*; D005561:Formates / Q000737:chemistry; D013058:Mass Spectrometry / Q000379:methods*; D008745:Methylation; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013696:Temperature; D014227:Triazines / Q000737:chemistry*; D014269:Trifluoroacetic Acid / Q000737:chemistry
chemical_list: D005561:Formates; D014227:Triazines; C030544:formic acid; D014269:Trifluoroacetic Acid; C011907:melamine