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Journal of Chromatography. A|March 9, 2010
Use of evaporative light scattering detection for the quality control of drug substances: influence of different liquid chromatographic and evaporative light scattering detector parameters on the appearance of spike peaksStefan Almeling, Ulrike HolzgrabeJournal of Pharmaceutical and Biomedical Analysis|April 11, 2012
Charged aerosol detection in pharmaceutical analysisStefan Almeling, David Ilko, Ulrike HolzgrabeJournal of Pharmaceutical and Biomedical Analysis|April 26, 2011
Use of collision induced dissociation mass spectrometry as a rapid technique for the identification of pharmacologically active peptides in pharmacopoeial testingUlrike Holzgrabe, Cees-Jan Nap, Stefan AlmelingJournal of Chromatography. A|December 4, 2009
Control of impurities in L-aspartic acid and L-alanine by high-performance liquid chromatography coupled with a corona charged aerosol detectorUlrike Holzgrabe, Cees-Jan Nap, Stefan AlmelingJournal of Pharmaceutical and Biomedical Analysis|June 14, 2011
Identification and control of impurities in streptomycin sulfate by high-performance liquid chromatography coupled with mass detection and corona charged-aerosol detectionUlrike Holzgrabe, Cees-Jan Nap, Nathalie Kunz, et al.Journal of Separation Science|June 16, 2010
Alternatives to amino acid analysis for the purity control of pharmaceutical grade L-alanineUlrike Holzgrabe, Cees-Jan Nap, Tanja Beyer, et al.Pageof 1