In Print / Publications

ElNaggar, M. S.; Barbier, C.; Van Berkel, G. J.  “Liquid Microjunction Surface Sampling Probe Fluid Dynamics:  Computational and Experimental Analysis of Coaxial Intercapillary Positioning Effects on Sample Manipulation,” Submitted.

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.  “Electronic Control of Analyte Electrolysis in Electrospray Ionization Mass Spectrometry Using Repetitively Pulsed High Voltage,”  Int. J. Mass Spectrom., in press.

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.