Laser ablation-mass spectrometry

Erel, E. Aubriet, F Finqueneisel, G. Muller, J.-F. Capabilities of Laser Ablation Mass Spectrometry in the Differentiation of Natural and Artificial Opal Gemstones. Anal Chem. 2003, 75, 6422-6429. 

K. Niemax, Laser Ablation—Reflections on a Very Complex Technique for Solid Sampling, Fresenius J. Anal. Chem. 2001,370, 332. A major challenge for laser ablation-mass spectrometry is quantitative analysis. One scheme achieves semiquantitative analysis without standards by comparing the signal from each element with the total mass spectrometric signal A. M. Leach and... 

The nanostructuring is achieved by directing a pulse from a frequency-tripled Nd YAG laser with a pulse width of 35 ps, a wavelength of 355 nm, and up to 250 pj pulse energy through a near-field optical tip. The tip had a diameter aperture of around 170 nm, creating ablation craters with about the same diameter (see below). Molecular crystals (the same bis-triazene that was used as model compound for the triazene polymers in other studies, shown in Scheme 7) were applied as substrates, because the main goal of this study was the development of nanoscale atmospheric-pressure laser ablation-mass spectrometry [390]. 

P-29 - Laser ablation mass spectrometry a technique for observing zeolite occluded molecules... 

Laser ablation mass spectrometry (LAMS) uses a pulsed laser to destroy zeolite structures, release and ionize molecules occluded within the zeolite pores. High resolution mass spectrometry can then be used to study the ions produced. This paper describes LAMS studies on two well defined model systems hexamethylbenzene(HMB) adsorbed in NaFAU, and the tetrapropylammonium(TPA) template in MFI. It is shown that LAMS can be used to identify the adsorbed species. 

In laser ionization or laser ablation mass spectrometry, the ions formed by the interaction of the laser with solid are directly sampled into a mass spectrometer. Another option is that the material removed from the surface can be swept into an inductively coupled plasma (ICP) for atomic analysis either by light emission... 

These physical sample preparation steps may be followed by one or more stages of chemical preparation. Table 4 outlines some analytical techniques commonly employed by geochemists and the sample preparation techniques required. More details are given in technique-specific articles. While some techniques such as EPMA, X-ray fluorescence (XRF), ion microprobe and laser ablation mass spectrometry require little preparation other than presentation of a clean, relatively flat surface, most techniques require either complete or partial digestion. 

Stockle, R., Setz, P., Deckert, V., Lippert, T, Wokaun, A., Zenobi, R. (2001) Nanoscale atmospheric pressure laser ablation-mass spectrometry. Analytical Chemistry, 73, 1399-1402. 

Ruch, D., Boes, C., Zimmer, R., Migeon, H.-N., Muller, J.-F. (2003) Surface oxidation of styrene butadiene copolymers study by laser ablation and secondary ion mass spectrometry. Journal of applied Polymer Science, 87,1910-1917. Ruch, D., Muller, J.-E, Migeon, H.-N., Boes, C., Zimmer, R. (2003) Secondary ion and laser ablation mass spectrometry... 

F. G., Ishigaki, T., Smith, D.R., Snznki, S., Willett, G.D. (1999) Laser ablation mass spectrometry of pyrolyzed Koppers coal-tar pitch a precursor for fullerenes and metallofullerenes. Journal of Physical Chemistry B, 103, 9450-9458. 

Erel, E., Aubriet, F, Finqueneisel, G., Muller, J.F. (2003) Capabilities of laser ablation mass spectrometry in the differentiation of natural and artificial opal gemstones. Analytical Chemistry, 75, 6422-6429. 

LA-MS Laser ablation mass spectrometry LIP-AES Laser-induced plasma-atomic... 

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