Plasma desorption mass spectroscopy

Macfarlane, R.D. Torgerson, D.F. Cali-fomium-252 Plasma Desorption Mass Spectroscopy. Science 1976, 191, 920-925. 

R. D. Macfarlane and D. F. Torgerson, Californium-252 plasma desorption mass spectroscopy, Science 191 (1976), 920-925. 

Hunt, J. E., R. D. Macfarlane, J. J. Katz, and R. C. Dougherty Self Assembled Chlorophyll a Systems as Studied by Californium-252 Plasma Desorption Mass Spectroscopy. Proc. Nat. Acad. Sci. (USA) 77, 1745 (1980). 

Perfluoroethylenes have been characterized by desorption chemical ionization and tandem mass spectrometry Fourier transform ion cyclotron resonance mass spectroscopy has also been applied to the identification of polymers, eg. polyethylene glycols. Comparative complimentary plasma desorption mass spectrometry/secondary ion mass spectrometry has been applied to the identification of oligomers of various polymers including polyethylene glycol, polytetrafluoroethylene, polycarbonate, polyacrylates, polyethylene terephthalate and siloxanes. ... 

Mass spectroscopy [electron ionisation (El), chemical ionisation (Cl), electrospray ionisation (ESI), fast atom bombardment (FAB), matrix-associated laser desorption ionisation (MALDI), inductively coupled plasma-mass spectrmetry (ICP-MS, cf and ), etc]... 

It was not possible to use MS for the characterization and identification of chlorophylls and its derivatives until the development of desorption methods (desorption ionization) appropriate for nonvolatile and thermolabile compounds. The mass spectmm of chlorophylls has been obtained using laser desorption [92-94], field desorption [95], plasma desorption [96,97], fast atom bombardment (FAB) [28, 98-101], in-beam electron ionization [102], and electrospray ionization (ESI) [103]. A combination of the techniques of desorption and tandem mass spectroscopy (MS/MS) has also been used for the charactmzation of chlorophylls and derivatives [ 104—107]. The latest research in this field coupled HPLC with MS, using as ionization source FAB [108-110] or atmosphoic pressure chemical ionization (APCI) [111-115]. 

Figure 1.13 Selected analytical techniques used for metallomics studies. ICP-OES, inductively coupled plasma optical emission spectroscopy, ICP-MS, inductively coupled plasma mass spectrometry LA-ICP-MS, laser ablation ICP-MS XRF, X-ray fluorescence spectroscopy PIXE, proton induced X-ray emission NAA, neutron activation analysis SIMS, secondary ion mass spectroscopy GE, gel electrophoresis LC, liquid chromatography GC, gas chromatography MS, mass spectrometry, which includes MALDI-TOF-MS, matrix-assisted laser desorption/ ionization time of flight mass spectrometry and ESI-MS, electron spray ionization mass spectrometry NMR, nuclear magnetic resonance PX, protein crystallography XAS, X-ray absorption spectroscopy NS, neutron scattering.

See also Fragmentation in Mass Spectrometry Ion Molecule Reactions in Mass Spectrometry Ion Structures in Mass Spectrometry Ionization Theory Laser Applications in Electronic Spectroscopy Metastable Ions Plasma Desorption Ionization in Mass Spectrometry Quadrupoles, Use of in Mass Spectrometry. 

See also Biochemical Applications of Mass MS-MS and MS Organometallics Studied Using Spectrometry Fragmentation in Mass Spectrometry Mass Spectrometry Peptides and Proteins Studied Ion Energetics in Mass Spectrometry Ionization The- Using Mass Spectrometry Plasma Desorption loniza-ory IR Spectroscopy Sample Preparation Methods tion in Mass Spectrometry Spectroscopy of Ions. 

Elemental analysis generally poses no problems because of the limited stability of the compounds and the formation of elemental gold in decomposition and combustion, which does not form carbides, nitrides, or other interstitial phases. Atomic absorption and inductively coupled plasma spectroscopy are presently the methods of choice for An estimation. Many organogold compounds are sufficiently volatile to allow registration of good mass spectra by gas-phase electron impact. Field desorption, fast-atom bombardment, and chemical ionization mass spectrometry have also been successfully applied. 

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