Christian Janfelt

Christian Janfelt

Associate Professor


  1. 2005
  2. The magnitude of pseudo-potential errors for density functional calculations

    Janfelt, Christian & Jensen, F., 2005, In : Chemical Physics Letters. 412, p. 501-503 3 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. The magnitude of pseudo-potential errors for bond distances and vibrational frequencies

    Jensen, F. & Janfelt, Christian, 2005, In : Chemical Physics Letters. 412, p. 12-15 4 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. 2006
  5. Published

    Characterization of a mini membrane inlet mass spectrometer for on-site detection of contaminants in both aqueous and liquid organic samples

    Janfelt, Christian, Frandsen, H. & Lauritsen, F. R., 2006, In : Rapid Communications in Mass Spectrometry. 20, p. 1441–1446 6 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  6. 2007
  7. Published

    Fast and direct screening of polyaromatic hydrocarbon (PAH)-contaminated sand using a miniaturized membrane inlet mass spectrometer (mini-MIMS)

    Frandsen, H., Janfelt, Christian & Lauritsen, F. R., 2007, In : Rapid Communications in Mass Spectrometry. 21, p. 1574-1578 5 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  8. Published

    Method for Quantification of Chemicals in a Pollution Plume Using a Moving Membrane-Based Sensor Exemplified by Mass Spectrometry

    Janfelt, Christian, Lauritsen, F. R., Toler, S. K., Bell, R. J. & Short, R. T., 2007, In : Analytical Chemistry. 79, p. 5336-5342 7 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  9. Published

    Ambient Mass Spectrometry with a Handheld Mass Spectrometer at High Pressure

    Keil, A., Talaty, N., Janfelt, Christian, Noll, R. J., Gao, L., Ouyang, Z. & Cooks, R. G., 2007, In : Analytical Chemistry. 79, p. 7734-7739 6 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  10. 2008
  11. Published

    Characterization and optimization of membrane inlets for a miniature ion trap mass spectrometer operating at a high background pressure of humid air

    Janfelt, Christian, Graesboll, R. & Lauritsen, F. R., 2008, In : International Journal of Mass Spectrometry. 276, p. 17-23 7 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  12. Published

    Kan analyselaboratoriet flyttes i felten?

    Janfelt, Christian & Lauritsen, F. R., 2008, In : LMFK-Bladet. 1, p. 31-34 4 p.

    Research output: Contribution to journalJournal articleCommissioned

  13. Mass spectra of proteins and other biomolecules recorded using a handheld instrument

    Janfelt, Christian, Talaty, N., Mulligan C., C., Keil, A., Quyang, Z. & Cooks, R. G., 2008, In : International Journal of Mass Spectrometry. 278, 2-3, p. 166-169

    Research output: Contribution to journalJournal articleResearchpeer-review

  14. Published

    On-line monitoring of VOC emissions from nanofilm coating products using a handheld membrane inlet mass spectrometer

    Nørgaard, A. W., Janfelt, Christian, Wolkoff, P., Jensen, K. A. & Lauritsen, F. R., 2008.

    Research output: Contribution to conferencePosterResearch

  15. 2009
  16. Published

    Liquid-Phase MicroExtraction coupled to Desorption Electrospray Ionization Mass Spectrometry in pharmaceutical analysis

    Janfelt, Christian, Thunig, U. J. C., Pedersen-Bjergaard, Stig & Hansen, S. H., 2009.

    Research output: Contribution to conferencePosterResearch

  17. Published

    Release of VOCs and particles during use of nanofilm spray products

    Nørgaard, A. W., Jensen, K. A., Janfelt, Christian, Lauritsen, F. R., Clausen, P. A. & Wolkoff, P., 2009, In : Environmental Science and Technology. 43, 20, p. 7824-7830 7 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  18. 2010
  19. Published

    Direkte analyse med DESI-MS

    Thunig, J., Lauritsen, F. R., Hansen, S. H., Janfelt, Christian & Christophersen, C., 2010, In : Dansk Kemi. 91, 3, p. 21-23 3 p.

    Research output: Contribution to journalJournal articleResearch

  20. 2011
  21. Published

    Characterization of a capillary spray cell for easy analysis of extracts of biological samples

    Janfelt, Christian & Lauritsen, F. R., 2011, In : International Journal of Mass Spectrometry. 299, p. 178-183

    Research output: Contribution to journalJournal articleResearchpeer-review

  22. Published

    Indirect DESI imaging of secondary metabolites in plant material

    Janfelt, Christian, Thunig, U. J. C., Li, B. & Hansen, S. H., 2011. 1 p.

    Research output: Contribution to conferencePosterResearch

  23. Published

    Massespektrometri viser fordelingen af lægemiddelstoffer i planter og væv

    Janfelt, Christian, Thunig, J., Li, B., Andersen, N. W., Hansen, Harald S. & Hansen, S. H., Dec 2011, In : Lægemiddelforskning. 2011, p. 10-12

    Research output: Contribution to journalJournal articleCommunication

  24. Published

    Characterization of barley leaf tissue using direct and indirect desorption electrospray ionization imaging mass spectrometry

    Li, B., Bjarnholt, Nanna, Hansen, S. H. & Janfelt, Christian, 2011, In : Journal of Mass Spectrometry. 46, 12, p. 1241-1246

    Research output: Contribution to journalJournal articleResearchpeer-review

  25. Published

    Nebulization ionization and desorption ionization analysis of reactive organofunctionalized silanes in nanofilm products

    Nørgaard, A. W., Janfelt, Christian, Benassi, M., Wolkoff, P. & Lauritsen, F. R., 2011, In : Journal of Mass Spectrometry. 46, 4, p. 402-410

    Research output: Contribution to journalJournal articleResearchpeer-review

  26. Published

    Analysis of secondary plant metabolites by indirect desorption electrospray ionization imaging mas spectrometry

    Thunig, U. J. C., Hansen, S. H. & Janfelt, Christian, 2011, In : Analytical Chemistry. 83, p. 3256-3259

    Research output: Contribution to journalLetterResearchpeer-review

  27. 2012
  28. Published

    Ambient mass spectrometry imaging: a comparison of desorption ionization by sonic spray and electrospray

    Janfelt, Christian & Nørgaard, A. W., Oct 2012, In : Journal of The American Society for Mass Spectrometry. 23, 10, p. 1670-8 9 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  29. Published

    Billeddannende massespektrometri

    Janfelt, Christian, D'Alvise, J., Li, B. & Hansen, S. H., 2012, In : Dansk Kemi. 93, 6/7, p. 12-14 3 p.

    Research output: Contribution to journalJournal articleCommunication

  30. Published

    Billeddannende massespektrometri til analyse af vævsprøver

    Janfelt, Christian, Wellner, N., D'Alvise, J. & Hansen, S. H., 2012, In : Dansk Kemi. 93, 8, p. 20-23

    Research output: Contribution to journalJournal articleResearch

  31. Published

    Ischemia in neonatal rat brains analyzed by Desorption Electrospray Ionization Imaging mass spectrometry

    Janfelt, Christian, Wellner, N., Leger, P., Kokesch-Himmelreich, J., Hansen, S. H., Charriaut-Marlangue, C. & Hansen, Harald S., 2012.

    Research output: Contribution to conferencePosterResearchpeer-review

  32. Published

    Portable electrospray ionization mass spectrometry (ESI-MS) for analysis of contaminants in the field

    Janfelt, Christian, Græsbøll, R. & Lauritsen, F. R., 2012, In : International Journal of Environmental Analytical Chemistry. 92, 4, p. 397–404 8 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  33. Published

    Visualization by mass spectrometry of 2-dimensional changes in rat brain lipids, including N-acylphosphatidylethanolamines, during neonatal brain ischemia

    Janfelt, Christian, Wellner, N., Leger, P., Kokesch-Himmelreich, J., Hansen, S. H., Charriaut-Marlangue, C. & Hansen, Harald S., 2012, In : F A S E B Journal. 26, 6, p. 2667-2673

    Research output: Contribution to journalJournal articleResearchpeer-review

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