Dorothea M. Kujawinski

Caffeine in Your Drink: Natural or Synthetic?

Lijun Zhang, Dorothea M. Kujawinski, Eugen Federherr et al. · Analytical Chemistry · 2012 · 72 citations

Food Analysis, Secondary Metabolite, Polyphenolics +18

Direct Photolysis of Sulfamethoxazole Using Various Irradiation Sources and Wavelength Ranges—Insights from Degradation Product Analysis and Compound-Specific Stable Isotope Analysis

Sarah Willach, Holger V. Lutze, Kevin Eckey et al. · Environmental Science & Technology · 2018 · 61 citations

When Other Separation Techniques Fail: Compound-Specific Carbon Isotope Ratio Analysis of Sulfonamide Containing Pharmaceuticals by High-Temperature-Liquid Chromatography-Isotope Ratio Mass Spectrometry

Dorothea M. Kujawinski, Lijun Zhang, Torsten C. Schmidt et al. · Analytical Chemistry · 2012 · 48 citations · Full text

Engineering, Organic Chemistry, Polar Compounds +17

High‐temperature reversed‐phase liquid chromatography coupled to isotope ratio mass spectrometry

Lijun Zhang, Dorothea M. Kujawinski, Maik A. Jochmann et al. · Rapid Communications in Mass Spectrometry · 2011 · 38 citations

Isotope Analysis, Caffeine Derivatives, Analytical Instrumentation +14

Dual element (15N/14N, 13C/12C) isotope analysis of glyphosate and AMPA by derivatization-gas chromatography isotope ratio mass spectrometry (GC/IRMS) combined with LC/IRMS

Emmanuel Mogusu, J. Benjamin Wolbert, Dorothea M. Kujawinski et al. · Analytical and Bioanalytical Chemistry · 2015 · 34 citations

Isotope Analysis, Organic Geochemistry, Environmental Chemistry +12