Resonant laser ablation as a selective metal ion source for gas-phase ion molecule reactions

Gill, Chris G.; Garrett, Aaron W.; Hemberger, P. H.; Nogar, N. S.

doi:10.1016/1044-0305(96)85612-1

Cited by 15 publications

(11 citation statements)

References 32 publications

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“…The isotope ratio precision of ion-trap mass spectrometers has typically been poor by comparison with high precision mass spectrometric methods, but our PSIT measurements on Xe + and work by Gill et al 19,40 indicate that precision better than 1% relative standard deviation is possible. Finally, collisional dissociation of diatomic and polyatomic ions is immensely beneficial in elemental mass spectrometry.…”

mentioning

confidence: 87%

Beneficial Ion/Molecule Reactions in Elemental Mass Spectrometry

Eiden

Barinaga

Koppenaal

1997

Rapid Commun. Mass Spectrom.

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A plasma source ion trap (PSIT) mass spectrometer has been modified to incorporate a radiofrequency octopole ion guide/collision cell between the ion source and the mass spectrometer. This modification allows ions sampled from the plasma to undergo reactions prior to mass spectrometric analysis. This capability can obviate the need for chemical or chromatographic separation of the sample, remove mass spectral intereferences and enable formation of analytically useful molecular ions. Distinct reaction chemistries can be utilized in the octopole and/or ion trap. Performance of the instrument is dramatically improved if hydrogen gas is introduced into the octopole; molecular hydrogen reacts with Ar + and certain other plasma ions, greatly reduces their intensities, and cools and focuses the ion beam prior to its injection into the ion trap.

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mentioning

confidence: 87%

Beneficial Ion/Molecule Reactions in Elemental Mass Spectrometry

Eiden

Barinaga

Koppenaal

1997

Rapid Commun. Mass Spectrom.

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“…In the case of cyclopentanone, a small amount of Ni(1-or 2-butene) þ should be formed (Larsen & Ridge, 1984;Peake, Gross, & Ridge, 1984) and should contribute to the loss of H 2 . Note that the product ions observed with cyclopentanone and acetone are different, the latter reacting with Ni þ under resonant laser ablation conditions by addition of up to two intact molecules (Gill et al, 1996).…”

Section: A Reactivity Towards Hydrocarbons (Alkanes Alkenes Alkynementioning

confidence: 99%

Thermochemistry, bonding, and reactivity of Ni⁺and Ni²⁺in the gas phase

Mó

Yáñez

Salpin

et al. 2007

Mass Spectrometry Reviews

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In this review, we present a general overview on the studies carried out on Ni(+-)- and Ni(2+)-containing systems in the gas phase since 1996. We have focused our attention in the determination of binding energies in parallel with an analysis of the structure and bonding of the complexes formed by the interaction of Ni(+) with one ligand, or in clusters where this metal ion binds several identical or different ligands. Solvation of Ni(2+) by different ligands is also discussed, together with the theoretical information available of doubly charged Ni-containing species. The final section of this review is devoted to an analysis of the gas-phase uni- and bimolecular reactivity of Ni(+) and Ni(2+) complexes.

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“…Resonant enhancements on the order of 1.5 to 10 times have been observed at the unperturbed gas-phase transition wavelengths for the analyte, 30,33,[37][38][39][40][41][42][43] while signals from the bulk matrix have been shown to be limited or nonexistent. 32,44 Ablation scan peak-widths fall into two regions: 5-20 pm 45,46 and 100 pm-1 nm at full-width at half-maximum (FWHM). [47][48][49] Most authors have attributed the relatively broad spectral features to collisional broadening in the vapor-phase plume, 50,51 while narrow spectral features imply that RLA occurred in the gas phase without significant collisional broadening.…”

Section: Introductionmentioning

confidence: 99%

Resonant Laser Ablation of Metals Detected by Atomic Emission in a Microwave Plasma and by Inductively Coupled Plasma Mass Spectrometry

et al. 2005

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It has been shown that an increase in sensitivity and selectivity of detection of an analyte can be achieved by tuning the ablation laser wavelength to match that of a resonant gas-phase transition of that analyte. This has been termed resonant laser ablation (RLA). For a pulsed tunable nanosecond laser, the data presented here illustrate the resonant enhancement effect in pure copper and aluminum samples, chromium oxide thin films, and for trace molybdenum in stainless steel samples, and indicate two main characteristics of the RLA phenomenon. The first is that there is an increase in the number of atoms ablated from the surface. The second is that the bandwidth of the wavelength dependence of the ablation is on the order of 1 nm. The effect was found to be virtually identical whether the atoms were detected by use of a microwave-induced plasma with atomic emission detection, by an inductively coupled plasma with mass spectrometric detection, or by observation of the number of laser pulses required to penetrate through thin films. The data indicate that a distinct ablation laser wavelength dependence exists, probably initiated via resonant radiation trapping, and accompanied by collisional broadening. Desorption contributions through radiation trapping are substantiated by changes in crater morphology as a function of wavelength and by the relatively broad linewidth of the ablation laser wavelength scans, compared to gas-phase excitation spectra. Also, other experiments with thin films demonstrate the existence of a distinct laser-material interaction and suggest that a combination of desorption induced by electronic transition (DIET) with resonant radiation trapping could assist in the enhancement of desorption yields. These results were obtained by a detailed inspection of the effect of the wavelength of the ablation laser over a narrow range of energy densities that lie between the threshold of laser-induced desorption of species and the usual analytical ablation regime. Normal ablation employs high-power lasers in an attempt to create a vapor plume without selective vaporization, and with a stoichiometry that accurately represents the stoichiometry of species in the solid sample. RLA, as a method of selective vaporization, appears to provide an opportunity to exploit selective vaporization in new ways.

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Resonant laser ablation as a selective metal ion source for gas-phase ion molecule reactions

Cited by 15 publications

References 32 publications

Beneficial Ion/Molecule Reactions in Elemental Mass Spectrometry

Beneficial Ion/Molecule Reactions in Elemental Mass Spectrometry

Thermochemistry, bonding, and reactivity of Ni⁺and Ni²⁺in the gas phase

Resonant Laser Ablation of Metals Detected by Atomic Emission in a Microwave Plasma and by Inductively Coupled Plasma Mass Spectrometry

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Resonant laser ablation as a selective metal ion source for gas-phase ion molecule reactions

Cited by 15 publications

References 32 publications

Beneficial Ion/Molecule Reactions in Elemental Mass Spectrometry

Beneficial Ion/Molecule Reactions in Elemental Mass Spectrometry

Thermochemistry, bonding, and reactivity of Ni+and Ni2+in the gas phase

Resonant Laser Ablation of Metals Detected by Atomic Emission in a Microwave Plasma and by Inductively Coupled Plasma Mass Spectrometry

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Thermochemistry, bonding, and reactivity of Ni⁺and Ni²⁺in the gas phase