In Print / Publications

Ovchinnikova, OS., Nikiforov, M., Jesse, S., Bradshaw, JA. Van Berkel GJ. "Combined Atomic Force Microscope-Based Topographical Imaging and Nanometer Scale Resolved Proximal Probe Thermal Desorption/Electrospray Ionization-Mass Spectrometry." ACS Nano, (2011), 5, 5526–5231..

Ovchinnikova, OS., Kertesz, V., Van Berkel, GJ. "Combining Laser Ablation Surface Sampling and Electrospray-Ionization via Liquid Extraction." Anal. Chem., (2011), 83, 1874–1878.

Ovchinnikova, OS., Kertesz, V., Van Berkel, GJ. "Molecular Surface Sampling and Chemical Imaging using Proximal Probe Thermal Desorption/Secondary Ionization Mass Spectrometry." Anal. Chem. (2011), 83, 598-603.

ElNaggar, M., Barbier, C., Van Berkel, GJ. "Surface Sampling Probe Fluid Dynamics: Computational and Experimental Analysis of Sampling Geometry Effects."Journal of the American Society Mass Spectrometry (2011), 7 (22), 1157-1166.

ElNaggar, M., Van Berkel, GJ. "Surface Sampling Probe Fluid Dynamics: Characterization and Application of a Concentration and Reaction Probe Mode." Journal of the American Society Mass Spectrometry (2011) Manuscript in Press.

Walworth, MJ., ElNaggar, M., Stankovich, JJ., Witkowski, C., Norris, JL., Van Berkel, GJ. "Direct Sampling and Analysis form Solid Phase Extraction Cards using an Automated Liquid Extraction Surface Analysis Nanoelectrospray Mass Spectrometry System." Rapid Commun. Mass Spectrom. (2011) 25, 2389-2396.

Ovchinnikova, O. S.; Kertesz, V.; Van Berkel, G. J.  “Combining Laser Ablation/Liquid Phase Collection Surface Sampling and High-Performance Liquid Chromatography Electrospray Ionization Mass Spectrometry.” Anal. Chem. Lett. (ASAP).

Ovchinnikova, O. S.; Kertesz, V.; Van Berkel, G. J.  “Molecular Surface Sampling and Chemical Imaging Using Proximal Probe Thermal Desorption/Secondary Ionization Mass Spectrometry.”  Anal. Chem. 2011, 83, 598-603.

Walworth, M.J.; Stankovich, J. J.; Van Berkel, G. J.; Schulz, M.; Minarik, S.; Nichols, J.; Reich, E.  “Hydrophobic Treatment Enabling Analysis of Wettable Surfaces Using a Liquid Microjunction Surface Sampling Probe/Electrospray Ionization-Mass Spectrometry System.”  Anal. Chem. 2011, 83, 591-597.

Kertesz, V.; Van Berkel, G. J.  Control of Analyte Electrolysis in Electrospray Ionization-Mass Spectrometry Using Repetitively Pulsed High Voltage.”  Int. J. Mass Spectrom., 2011, 303, .

Peintler-Krivan, E.; Van Berkel, G. J.; Kertesz, V.  “Poly(3,4-ethylenedioxypyrrole) Modified Emitter Electrode for Substitution of Homogeneous Redox Buffer Agent Hydroquinone in Electrospray Ionization Mass Spectrometry,”  Rapid Commun. Mass Spectrom. 2010, 24, 3368-3371.

Kertesz, V.; Van Berkel, G. J.  “Liquid Microjunction Surface Sampling Coupled with HPLC for Analysis of Drugs and Metabolites in Whole-Body Thin Tissue Sections,”  Anal. Chem. 2010, 82, 5917-5921. 

Ovchinnikova, O. S.; Van Berkel, G. J.  “Thin Layer Chromatography and Mass Spectrometry Coupled using Proximal Probe Thermal Desorption with Electrospray or Atmospheric Pressure Chemical Ionization,”  Rapid Commun. Mass Spectrom., 2010, 24, 1721-1729.

Kertesz, V; Van Berkel, G. J.  “Fully Automated Liquid Extraction-Based Surface Sampling and Ionization Using a Chip-Based Robotic Nanoelectrospray Platform,”  J. Mass Spectrom. 2010, 45, 252-260. 

Peintler-Krivan, E.; Van Berkel, G. J.; Kertesz, V.  “Minimizing Analyte Electrolysis in Electrospray Ionization Mass Spectrometry Using an Emitter Electrode with a Surface Tethered Redox Buffer.”  Rapid Commun. Mass Spectrom, 2010, 24, 1327-1334.

Van Berkel, G. J.; Kertesz, V. "Electrochemically Initiated Tagging of Thiols Using an Electrospray Ionization-Based Liquid microjunction Surface Sampling Probe Two-Electrode Cell." Rapid Commun. Mass Spectrom., 2009, 23, 1380-1386.

Bradshaw, J. A.; Ovchinnikova, O.S.; Meyer, K.A.; Goeringer, D.E. “Combined Chemical and Topographic Imaging at Atmospheric Pressure via Microprobe Laser Desorption/Ionization Mass Spectrometry-Atomic Force Microscopy.”  Rapid Commun. Mass Spectrom., 2009, 23, 3781-3786.

Van Berkel, G. J.; Kertesz, V.  “Application of a Liquid Extraction Based Sealing Surface Sampling Probe for Mass Spectrometric Analysis of Dried Blood Spots and Mouse-Whole Body Thin Tissue Sections.”  Anal. Chem., 2009, 81, 9146-9152.

Pasilis, S. P.; Van Berkel, G. J.  “Atmospheric Pressure Surface Sampling/Ionization Techniques for Direct Coupling of Planar Separations with Mass Spectrometry.”  J. Chrom. A., 2010, 1217, 3955-3965.

Emory, J. F.; Walworth, M. J.; Van Berkel, G. J.; Schulz, M.; Minarik, S.  “Direct Analysis of Reversed-Phase HPTLC Separated Tryptic Protein Digests using a Liquid Microjunction Surface Sampling Probe/ESI-MS System.”  Eur. J. Mass Spectrom. 2009, 16, 21-33.

Van Berkel, G. J.; Kertesz, V.; King, R. C.  “High-Throughput Mode Liquid Microjunction Surface Sampling Probe.”  Anal. Chem. 2009, 81, 7096-7101 .

Van Berkel, G. J.; Kertesz, V. "Electrochemically Initiated Tagging of Thiols Using an Electrospray Ionization-Based Liquid microjunction Surface Sampling Probe Two-Electrode Cell." Rapid Commun. Mass Spectrom., 2009, 23, 1380-1386.

Kertesz, V.; Van Berkel, G. J. "Improved DESI-MS Performance using Edge Sampling and a Rotational Sample Stage." Rapid Commun. Mass Spectrom., 2008, 22, 3846-3850.

Kertesz, V.; Van Berkel, G. J. "Improved Imaging Resolution in Desorption Electrospray Ionization Mass Spectrometry." Anal. Chem., 2008, 22, 2639-2644.

Van Berkel, G.J.; Pasilis, S. P.; Ovchinnikova, O. "Established and Emerging Atmospheric Pressure Surface Sampling/Ionization Techniques for Mass Spectrometry." J. Mass Spectrom., 2008, 43, 1161-1180.

Kertesz, V.; Van Berkel, G. J.; Vavrek, M.; Koeplinger, K. A.; Schneider, B.B.; Covey, T. R. "Comparison of Drug Distribution Images from Whole-Body Thin Tissue Sections Obtained Using Desorption Electrospray Ionization Tandem Mass Spectrometry and Autoradiography." Anal. Chem., 2008, 80, 5168-5177.

Pasilis, S. P.; Kertesz, V.; Van Berkel, G. J.; Schulz, M.; Schorcht, S. "HPTLC/DESI-MS Imaging of Tryptic Protein Digests Separated in Two Dimensions." J. Mass Spectrom., 2008, 43, 1627-1635.

Pasilis, S. P.; Kertesz, V.; Van Berkel, G. J.; Schulz, M.; Schorcht, S. "Using HPTLC/DESI-MS for Peptide Identification in 1D Separations of Tryptic Protein Digests." Anal. Bioanal. Chem., 2008, 391, 317-324.

Pasilis, S. P.; Kertesz, V.; Van Berkel, G. J. "Unexpected Analyte Oxidation during Desorption Electrospray Ionization - Mass Spectrometry." Anal. Chem., 2008, 80, 1208-1214.

Kertesz, V.; Van Berkel, G. J. "Scanning and Surface Alignment Considerations in Chemical Imaging with Desorption Electrospray Mass Spectrometry." Anal. Chem., 2008, 80, 1027-1032.

Jackson, A.; Talaty, N.; Cooks, R. G.; Van Berkel, G. J. "Salt Tolerance of Desorption Electrospray Ionization (DESI)." J. Am. Soc. Mass Spectrom., 2007, 18, 2218-2225.

Van Berkel, G. J.; Kertesz, V.; Koeplinger, K. A.; Vavrek, M.; Kong, A. T. "Liquid Micro-Junction Surface Sampling Probe Electrospray Mass Spectrometry for Detection of Drugs and Metabolites in Thin Tissue Sections." J. Mass Spectrom.. 2008, 43, 500-508.

Pasilis, S. P.; Kertesz, V.; Van Berkel, G. J. "Surface Scanning Analysis of Planar Arrays of Analytes with Desorption Electrospray Ionization - Mass Spectrometry." Anal Chem., 2007, 79, 5956-5962.

Van Berkel, G. J.; Tomkins, B. A.; Kertesz, V. "Thin-Layer Chromatography/Desorption Electrospray Ionization Mass Spectrometry: Investigation of Goldenseal Alkaloids." Anal. Chem., 2007, 79, 2778-2789.

Van Berkel, G. J.; Kertesz, V. “Automated Sampling and Imaging of Analytes Separated on Thin-Layer Chromatography Plates Using Desorption Electrospray Ionization Mass Spectrometry.” Anal. Chem., 2006, 78, 4938-4944..

Van Berkel, G. J.; Ford, M. J.; Doktycz, M. J.; Kennel, S. J. “Evaluation of a Surface Sampling Probe Electrospray Mass Spectrometry System for the Analysis of Surface Deposited and Affinity Captured Proteins.” Rapid Commun. Mass Spectrom., 2006, 20, 1144-1152.

Kertesz, V.; Ford, M. J.; Van Berkel, G. J. "Automation of a Surface Sampling Probe/Electrospray Mass Spectrometry System." Anal. Chem., 2005, 77, 7183-7189.

Asano, K. G.; Ford, M. J.; Tomkins, B. A.; Van Berkel, G. J. "Self-Aspirating Atmospheric Pressure Chemical Ionization Source for Direct Sampling of Analytes on Surfaces and in Liquid Solutions." Rapid Commun. Mass Spectrom., 2005, 19, 2305-2312.

Ford, M. J.; Deibel, M. A.; Tomkins, B. A.; Van Berkel, G. J. "Quantitative Thin-Layer Chromatography/Mass Spectrometry Analysis of Caffeine using a Surface Sampling Probe Electrospray Ionization Tandem Mass Spectrometry System." Anal. Chem., 2005, 77, 4385-4389.

Van Berkel, G. J.; Ford, M. J.; Deibel, M. A. "Thin Layer Chromatography and Mass Spectrometry Coupled using Desorption Electrospray Ionization." Anal. Chem., 2005, 77, 1207-1215.

Ford, M. J.; Kertesz, V.; Van Berkel, G. J. "Thin Layer Chromatography/Electrospray Ionization Triple Quadrupole Linear Ion Trap Mass Spectrometry System: Analysis of Rhodamine Dyes Separated on Reversed Phase C8 Plates." J. Mass Spectrometry, 2005, 40, 866-875.

Ford, M. J.; Van Berkel, G. J. "An Improved Thin-Layer Chromatography/Mass Spectrometry Coupling Using a Surface Sampling Probe Electrospray Ion Trap System." Rapid Commun. Mass Spectrom., 2004, 18, 1303-1309.

Van Berkel, G. J.; Llave, J. J.; Apadoca, M. F.; Ford, M. J. "Rotation Planar Chromatography Coupled On-Line with Atmospheric Pressure Chemical Ionization Mass Spectrometry." Anal. Chem., 2004, 76, 479-482.

Van Berkel, G. J. "An Overview of Some Recent Developments in Ionization Methods for Mass Spectrometry." Eur. J. Mass Spectrom., 2003, 9, 539-562.

Van Berkel G.J.; Sanchez, A. D.; Quirke, J. M. E. "Thin-Layer Chromatography and Electrospray Mass Spectrometry Coupled using a Surface Sampling Probe." Anal. Chem., 2002, 74, 6216-6223.

Kertesz, V.; Van Berkel, G. J. "Surface-Assisted Reduction of Aniline Oligomers, N-Phenyl-1,4-Phenylenediamine and Thionin in Atmospheric Pressure Chemical Ionization and Atmospheric Pressure Photoionization." J. Am. Soc Mass Spectrom., 2002, 13, 109-117.