title: Fully automated liquid extraction-based surface sampling and ionization using a chip-based robotic nanoelectrospray platform.
abstract: A fully automated liquid extraction-based surface sampling device utilizing an Advion NanoMate chip-based infusion nanoelectrospray ionization system is reported. Analyses were enabled for discrete spot sampling by using the Advanced User Interface of the current commercial control software. This software interface provided the parameter control necessary for the NanoMate robotic pipettor to both form and withdraw a liquid microjunction for sampling from a surface. The system was tested with three types of analytically important sample surface types, viz., spotted sample arrays on a MALDI plate, dried blood spots on paper, and whole-body thin tissue sections from drug dosed mice. The qualitative and quantitative data were consistent with previous studies employing other liquid extraction-based surface sampling techniques.
authors.affiliation: Organic and Biological Mass Spectrometry Group, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6131, USA. kerteszv@ornl.gov
authors.forename: Vilmos
authors.initials: V
authors.lastname: Kertesz
authors.forename: Gary J
authors.initials: GJ
authors.lastname: Van Berkel
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000295:instrumentation*; D025924:Chromatography, Supercritical Fluid / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D046210:Microfluidic Analytical Techniques / Q000295:instrumentation*; D036103:Nanotechnology / Q000295:instrumentation*; D015203:Reproducibility of Results; D012371:Robotics / Q000295:instrumentation*; D012680:Sensitivity and Specificity; D021241:Spectrometry, Mass, Electrospray Ionization / Q000295:instrumentation*