An inexpensive and renewable pencil electrode for use in field-based stripping voltammetry

Alan M. Bond, Peter J. Mahon, Jörg Schiewe, +1

Analytica Chimica Acta

ElectrometallurgyElectrical EngineeringChemical EngineeringEngineeringField-based Stripping Voltammetry +5

Application and optimization of capillary zone electrophoresis in vitamin analysis

Jörg Schiewe, Yahya Mrestani, Reinhard H.H. Neubert

Journal of Chromatography A

Vitamin AnalysisCapillary ElectrophoresisBiochemistryBioanalysisAnalytical Chemistry +7

Microcomputer-based instrumentation for multi-frequency Fourier transform alternating current (admittance and impedance) voltammetry

Darrell Elton, W. Alexander Czerwinski, Jörg Schiewe, +2

Journal of Electroanalytical Chemistry

Electrical EngineeringEngineeringMulti-frequency Fourier TransformAnalytical ChemistryElectroanalytical Sensor +4

Linear-Scan Anodic Stripping Voltammetry with Thin-Film Electrodes:  Theory of the Stripping Stage and Experimental Tests

Jörg Schiewe, Keith B. Oldham, Jan C. Myland, +3

Analytical Chemistry

Application of capillary zone electrophoresis in cephalosporin analysis

Yahya Mrestani, Reinhard H.H. Neubert, Jörg Schiewe, +1

Journal of Chromatography B Biomedical Sciences and Applications

Capillary ElectrophoresisBiochemistryBioanalysisAnalytical ChemistryElectrophysiology +7

A unified approach to trace analysis and evaluation of electrode kinetics with fast Fourier transform electrochemical instrumentation

Jörg Schiewe, Jenö Házı̀, Victoria A. Vicente‐Beckett, +1

Journal of Electroanalytical Chemistry

Chemical EngineeringEngineeringFundamental ElectrochemistrySpectroelectrochemistryAnalytical Chemistry +9

Application of capillary zone electrophoresis for analyzing biotin in pharmaceutical formulations—a comparative study

Jörg Schiewe, Steffen Göbel, Maria Schwarz, +1

Journal of Pharmaceutical and Biomedical Analysis

Capillary Zone ElectrophoresisEngineeringCapillary ElectrophoresisBioanalysisBiotechnology +7

Influence of small amorphous amounts in hydrophilic and hydrophobic APIs on storage stability of dry powder inhalation products

Thorsten Müller, Regina Krehl, Jörg Schiewe, +2

European Journal of Pharmaceutics and Biopharmaceutics

Materials ScienceSmall Amorphous AmountsChemical EngineeringStorage StabilityFood Packaging +8

Applicability of the one-step DVS method for the determination of amorphous amounts for further different hydrophilic and hydrophobic drugs

Thorsten Müller, Regina Scherließ, Jörg Schiewe, +3

European Journal of Pharmaceutics and Biopharmaceutics

Gas ChromatographyMedicineDrug PurityMass SpectrometryForensic Toxicology +12

Measurement of low amounts of amorphous content in hydrophobic active pharmaceutical ingredients with dynamic organic vapor sorption

Thorsten Müller, Jörg Schiewe, Rüdiger Smal, +3

European Journal of Pharmaceutics and Biopharmaceutics

Amorphous ContentChemical EngineeringLow AmountsEngineeringChemical Measurement +9