Schematic of field desorption ionization with emitter at left and mass spectrometer at right
Field desorption (FD) is a method of ion formation used in mass spectrometry (MS) in which a high-potential electric field is applied to an emitter with a sharp surface, such as a razor blade, or more commonly, a filament from which tiny "whiskers" have formed.[1][2] This results in a high electric field which can result in ionization of gaseous molecules of the analyte. Mass spectra produced by FD have little or no fragmentation because FD is a soft ionization method. They are dominated by molecular radical cations M+. and less often, protonated molecules . The technique was first reported by Beckey in 1969.[3] It is also the first ionization method to ionize nonvolatile and thermally labile compounds. One major difference of FD with other ionization methods is that it does not need a primary beam to bombard a sample.[4]
^IUPAC, Compendium of Chemical Terminology, 2nd ed. (the "Gold Book") (1997). Online corrected version: (2006–) "Field desorption". doi:10.1351/goldbook.F02357
^Röllgen, F. W. (1983). "Principles of Field Desorption Mass Spectrometry (Review)". Ion Formation from Organic Solids. Springer Series in Chemical Physics. Vol. 25. pp. 2–13. doi:10.1007/978-3-642-87148-1_1. ISBN 978-3-642-87150-4. ISSN 0172-6218.
^Beckey H.D. Field ionization mass spectrometry.Research/Development, 1969, 20(11), 26
^Dass, Chhabil (2007). Fundamentals of Contemporary Mass Spectrometry - Dass - Wiley Online Library. doi:10.1002/0470118490. ISBN 9780470118498.
Fielddesorption (FD) is a method of ion formation used in mass spectrometry (MS) in which a high-potential electric field is applied to an emitter with...
sources to ionize the analyte via MPI. Fielddesorption refers to an ion source in which a high-potential electric field is applied to an emitter with a sharp...
(FT-NMR) spectroscopy. Fielddesorption ionization was first reported by Beckey in 1969. In field ionization, a high-potential electric field is applied to an...
8 cm drift region and a 38° field of view. An FIM image or a desorption image of the atoms removed from the apex of a field emitter tip could be obtained...
secondary droplets that are the source of ions for the mass spectrometer. Desorption electrospray ionization (DESI) is one of the original ambient ionization...
others. Others include glow discharge, fielddesorption (FD), fast atom bombardment (FAB), thermospray, desorption/ionization on silicon (DIOS), atmospheric...
Solid phase samples can be ionized through methods such as fielddesorption, plasma-desorption, fast atom bombardment, and secondary-ion ionization. Liquids...
reaches a certain radius the field strength at the surface of the droplet becomes large enough to assist the fielddesorption of solvated ions. The CRM suggests...
1683116. ISSN 0034-6748. Panitz, John A. (1999). "Isothermal ramped field-desorption of benzene from tungsten". Journal of Vacuum Science and Technology...
behavior of adatoms on surfaces. The problems studied include adsorption-desorption phenomena, surface diffusion of adatoms and clusters, adatom-adatom interactions...
Desorption electrospray ionization (DESI) is an ambient ionization technique that can be coupled to mass spectrometry (MS) for chemical analysis of samples...
Society of Japan held in Kyoto, in May 1987 and became known as soft laser desorption (SLD). However, there was some criticism about his winning the prize,...
Magnetic Field Laboratory (NHMFL) and Florida State University. Ionization of nonpolar petroleum components can be achieved by fielddesorption ionization...
Both patents are listed under the name: electrochemical generation of fielddesorption emitters. "Microvoltammetric Electrodes" (PDF). Analytical Chemistry...
neutralize the net positive charge, positive ion desorption is the only way to restore neutrality. However, desorption essentially means the surface is degraded...
equilibrium with the gas phase, i.e. similar molecule adsorption and desorption rates. The desorption is a kinetically limited process, i.e. a heat of adsorption...
adsorbent. The term sorption encompasses both adsorption and absorption, and desorption is the reverse of sorption. IUPAC definition adsorption: An increase in...
spectrometry imaging (MALDI-MSI) is the use of matrix-assisted laser desorption ionization as a mass spectrometry imaging technique in which the sample...
Kenzo Hiraoka (March 2013). "Leidenfrost Phenomenon-assisted Thermal Desorption (LPTD) and Its Application to Open Ion Sources at Atmospheric Pressure...
Brown, Christopher J.; Hlavacek, Vladimir (21 October 2009). "Adsorption/Desorption of Water and Ethanol on 3A Zeolite in Near-Adiabatic Fixed Bed". Industrial...
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